1280 recap info

Discussion in 'Pioneer Audio' started by jtee1340, Jul 11, 2014.

  1. jtee1340

    jtee1340 AK Subscriber Subscriber

    Messages:
    632
    Location:
    Tampa Florida
    I am about to embark on recap of a 1280 soon. I a have been searching for a cap list for this beast and have come up empty.
    Anyone have this info and would like to share? I will do the tear it apart and write them down if that is all I can do.
    Thanks,
    J.T.
     
  2. markthefixer

    markthefixer On Hiatus, dealing with Dad's estate full time Subscriber

    Messages:
    20,389
    Location:
    Bensenville,Illinois
    Well, I'll be.... NO 1280 list... I can put up the caps, but a few other transistors are called for. OR I can put up the BIG list I have, but that will be closer to a full parts list for repairs - and most of the transistors and such won't be needed...

    I can't sort them out right now... edit - added in tuner...(plus no tuner)
    so here's the cap list:

    EQ Amp
    awf-031 c1 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awf-031 c2 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awf-031 c5 33 35 cea 647-UPW1H330MED 33 50
    awf-031 c6 33 35 cea 647-UPW1H330MED 33 50
    awf-031 c9 470 6 cea 647-UPW1E471MPD 470 16
    awf-031 c10 470 6 cea 647-UPW1E471MPD 470 16
    awf-031 c17 3.3 25 ceanl 647-UKL1H3R3KDDANA 3.3 50
    awf-031 c18 3.3 25 ceanl 647-UKL1H3R3KDDANA 3.3 50
    awf-031 c21 4.7 25 ach318nonpolar 647-UEP1V4R7MDD 4.7 35
    awf-031 c22 4.7 25 ach318nonpolar 647-UEP1V4R7MDD 4.7 35


    Flat Amp
    awg-060 c5 4.7 25 ceanl 647-UKL1H4R7KDDANA 4.7 50
    awg-060 c6 4.7 25 ceanl 647-UKL1H4R7KDDANA 4.7 50
    awg-060 c9 100 10 cea 647-UPW1A101MDD 100 10
    awg-060 c10 100 10 cea 647-UPW1A101MDD 100 10
    awg-060 c15 100 10 cea 647-UPW1A101MDD 100 10
    awg-060 c16 100 10 cea 647-UPW1A101MDD 100 10
    awg-060 c17 220 35 cea 647-UPW1V221MPD 220 35
    awg-060 c18 220 35 cea 647-UPW1V221MPD 220 35


    tone Amp
    awg-059 c1 4.7 25 csza 647-UKL1H4R7KDDANA 4.7 50
    awg-059 c2 4.7 25 csza 647-UKL1H4R7KDDANA 4.7 50
    awg-059 c3 4.7 25 csza 647-UKL1H4R7KDDANA 4.7 50
    awg-059 c4 4.7 25 csza 647-UKL1H4R7KDDANA 4.7 50
    awg-059 c11 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c12 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c13 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c14 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c17 100 10 ach312pol 647-UPW1A101MDD 100 10
    awg-059 c18 100 10 ach312pol 647-UPW1A101MDD 100 10
    awg-059 c19 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c20 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c27 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c28 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c29 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c30 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c33 100 10 ach312pol 647-UPW1A101MDD 100 10
    awg-059 c34 100 10 ach312pol 647-UPW1A101MDD 100 10
    awg-059 c35 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c36 2.2 50 ceanl 647-UKL1H2R2MDAANA 2.2 50
    awg-059 c37 100 16 ach311polpsbyp 647-UPW1V101MPD 100 35
    awg-059 c38 100 16 ach311polpsbyp 647-UPW1V101MPD 100 35
    awg-059 c39 100 16 ach311polpsbyp 647-UPW1V101MPD 100 35
    awg-059 c40 100 16 ach311polpsbyp 647-UPW1V101MPD 100 35
    awg-059 c43 10 25 csza 647-UKL1H100KDDANA 10 50
    awg-059 c44 10 25 csza 647-UKL1H100KDDANA 10 50


    Filt Amp
    awm-119 c1 0.22 35 csza 598-DSF050J224 0.22 50
    awm-119 c2 0.22 35 csza 598-DSF050J224 0.22 50
    awm-119 c3 0.22 35 csza 598-DSF050J224 0.22 50
    awm-119 c4 0.22 35 csza 598-DSF050J224 0.22 50
    awm-119 c5 4.7 25 csza 647-UKL1H4R7KDDANA 4.7 50
    awm-119 c6 4.7 25 csza 647-UKL1H4R7KDDANA 4.7 50
    awm-119 c11 10 25 csza 647-UKL1H100KDDANA 10 50
    awm-119 c12 10 25 csza 647-UKL1H100KDDANA 10 50


    Meter Amp
    awm-121 c1 1 50 cea 647-UPW1H010MDD 1 50
    awm-121 c2 1 50 cea 647-UPW1H010MDD 1 50
    awm-121 c3 10 16 cea 647-UPW1V100MDD 10 35
    awm-121 c4 10 16 cea 647-UPW1V100MDD 10 35


    prot
    awm-123 c1 220 25 cea 647-UPW1V221MPD 220 35
    awm-123 c2 22 16 cea 647-UPW1H220MDD 22 50
    awm-123 c3 47 16 cea 647-UPW1V470MED1TD 47 35
    awm-123 c4 100 16 cea 647-UPW1V101MPD 100 35
    awm-123 c5 10 16 cea 647-UPW1V100MDD 10 35
    awm-123 c16 33 16 cea 647-UPW1H330MED 33 50

    pwr amp
    awh-074L c1 100 35 cea 647-UPW1H101MPD 100 50
    awh-074L c2 100 35 cea 647-UPW1H101MPD 100 50
    awh-074L c3 1 35 ceanl 647-UKL1H010KDDANA 1 50
    awh-074L C3.1 1 35 ceanl 5989-100V1.0-F 1 100
    awh-074L c8 100 80 cea 647-UPW2A101MHD 100 100
    awh-074L c9 100 80 cea 647-UPW2A101MHD 100 100
    awh-074L c16 0.22 35 csza 598-DSF050J224 0.22 50

    pwr amp
    awh-074R c1 100 35 cea 647-UPW1H101MPD 100 50
    awh-074R c2 100 35 cea 647-UPW1H101MPD 100 50
    awh-074R c3 1 35 ceanl 647-UKL1H010KDDANA 1 50
    awh-074R C3.1 1 35 ceanl 5989-100V1.0-F 1 100
    awh-074R c8 100 80 cea 647-UPW2A101MHD 100 100
    awh-074R c9 100 80 cea 647-UPW2A101MHD 100 100
    awh-074R c16 0.22 35 csza 598-DSF050J224 0.22 50


    pwr sup reg
    awr-157 c5 470 100 ceb 647-TVX2A471MCD 470 100
    awr-157 c6 470 100 ceb 647-TVX2A471MCD 470 100
    awr-157 c7 220 80 cea 647-UPW2A221MHD 220 100
    awr-157 c8 220 80 cea 647-UPW2A221MHD 220 100
    awr-157 c11 22 35 cea 647-UPW1H220MDD 22 50
    awr-157 c12 22 35 cea 647-UPW1H220MDD 22 50
    awr-157 c13 10 35 cea 647-UPW1V100MDD 10 35
    awr-157 c14 10 35 cea 647-UPW1V100MDD 10 35
    awr-157 c15 330 25 cea 647-UPW1H331MPD 330 50
    awr-157 c16 330 25 cea 647-UPW1H331MPD 330 50
    awr-157 c18 1000 16 cea 647-UPW1E102MPD6 1000 25
    awr-157 c19 1000 16 cea 647-UPW1E102MPD6 1000 25
    awr-157 c20 1000 25 cea 647-UPW1H102MHD 1000 50
    awr-157 c21 33 25 cea 647-UPW1H330MED 33 50
    awr-157 c22 100 16 cea 647-UPW1V101MPD 100 35
    awr-157 c23 22 10 cea 647-UPW1H220MDD 22 50
    awr-157 c24 10 10 cea 647-UPW1V100MDD 10 35

    sx-1280 tuner
    sx-1280 awe-092 c27 0.1 35 csza 667-ECQ-V1H104JL
    sx-1280 awe-092 c28 0.47 50 cea 667-ECQ-V1H474JL
    sx-1280 awe-092 c44 0.56 35 csza 667-ECQ-V1H564JL
    sx-1280 awe-092 c45 0.56 35 csza 667-ECQ-V1H564JL
    sx-1280 awe-092 c38 1 25 csza 647-UKL1H010KDDANA
    sx-1280 awe-092 c39 1 25 csza 647-UKL1H010KDDANA
    sx-1280 awe-092 c42 3.3 16 csza 647-UKL1H3R3KDDANA
    sx-1280 awe-092 c43 3.3 16 csza 647-UKL1H3R3KDDANA
    sx-1280 awe-092 c70 4.7 16 csza 647-UKL1H4R7KDDANA
    sx-1280 awe-092 c76 4.7 16 csza 647-UKL1H4R7KDDANA
    sx-1280 awe-092 c40 6.8 6 csza 647-UKL1E6R8KDDANA
    sx-1280 awe-092 c35 10 16 csza 647-UKL1H100KDDANA
    sx-1280 awe-092 c49 10 16 csza 647-UKL1H100KDDANA
    sx-1280 awe-092 c73 10 16 csza 647-UKL1H100KDDANA
    sx-1280 awe-092 c32 1 50 cea 647-UPW1H010MDD
    sx-1280 awe-092 c37 1 50 cea 647-UPW1H010MDD
    sx-1280 awe-092 c61 3.3 50 cea 647-UPW1H3R3MDD
    sx-1280 awe-092 c62 4.7 35 cea 647-UPW1H4R7MDD
    sx-1280 awe-092 c67 10 16 cea 647-UPW1V100MDD
    sx-1280 awe-092 c79 33 16 cea 647-UPW1H330MED
    sx-1280 awe-092 c46 47 10 cea 647-UPW1V470MED
    sx-1280 awe-092 c47 47 10 cea 647-UPW1V470MED
    sx-1280 awe-092 c83 100 6 cea 647-UPW1A101MDD
    sx-1280 awe-092 c81 100 16 cea 647-UPW1H101MPD
    sx-1280 awe-092 c36 220 16 cea 647-UPW1V221MPD
    sx-1280 awe-092 c78 220 16 cea 647-UPW1V221MPD


    sx-1280 Sw assy
    sx-1280 gws-173 c9 10 16 cea 647-UPW1V100MDD
    sx-1280 gws-173 c10 220 6 cea 647-UPW1A221MED
    sx-1280 gws-173 q1 2sc945 512-KSA992FBU

    sx-1280 fuse 12a ceramic 576-0326012.HXP

    mouser.com parts list entry:


    647-UKL1H2R2MDAANA
    647-UKL1H2R2MDAANA
    647-UPW1H330MED
    647-UPW1H330MED
    647-UPW1E471MPD
    647-UPW1E471MPD
    647-UKL1H3R3KDDANA
    647-UKL1H3R3KDDANA
    647-UEP1V4R7MDD
    647-UEP1V4R7MDD



    647-UKL1H4R7KDDANA
    647-UKL1H4R7KDDANA
    647-UPW1A101MDD
    647-UPW1A101MDD
    647-UPW1A101MDD
    647-UPW1A101MDD
    647-UPW1V221MPD
    647-UPW1V221MPD



    647-UKL1H4R7KDDANA
    647-UKL1H4R7KDDANA
    647-UKL1H4R7KDDANA
    647-UKL1H4R7KDDANA
    647-UKL1H2R2MDAANA
    647-UKL1H2R2MDAANA
    647-UKL1H2R2MDAANA
    647-UKL1H2R2MDAANA
    647-UPW1A101MDD
    647-UPW1A101MDD
    647-UKL1H2R2MDAANA
    647-UKL1H2R2MDAANA
    647-UKL1H2R2MDAANA
    647-UKL1H2R2MDAANA
    647-UKL1H2R2MDAANA
    647-UKL1H2R2MDAANA
    647-UPW1A101MDD
    647-UPW1A101MDD
    647-UKL1H2R2MDAANA
    647-UKL1H2R2MDAANA
    647-UPW1V101MPD
    647-UPW1V101MPD
    647-UPW1V101MPD
    647-UPW1V101MPD
    647-UKL1H100KDDANA
    647-UKL1H100KDDANA



    598-DSF050J224
    598-DSF050J224
    598-DSF050J224
    598-DSF050J224
    647-UKL1H4R7KDDANA
    647-UKL1H4R7KDDANA
    647-UKL1H100KDDANA
    647-UKL1H100KDDANA



    647-UPW1H010MDD
    647-UPW1H010MDD
    647-UPW1V100MDD
    647-UPW1V100MDD



    647-UPW1V221MPD
    647-UPW1H220MDD
    647-UPW1V470MED1TD
    647-UPW1V101MPD
    647-UPW1V100MDD
    647-UPW1H330MED


    647-UPW1H101MPD
    647-UPW1H101MPD
    647-UKL1H010KDDANA
    5989-100V1.0-F
    647-UPW2A101MHD
    647-UPW2A101MHD
    598-DSF050J224


    647-UPW1H101MPD
    647-UPW1H101MPD
    647-UKL1H010KDDANA
    5989-100V1.0-F
    647-UPW2A101MHD
    647-UPW2A101MHD
    598-DSF050J224



    647-TVX2A471MCD
    647-TVX2A471MCD
    647-UPW2A221MHD
    647-UPW2A221MHD
    647-UPW1H220MDD
    647-UPW1H220MDD
    647-UPW1V100MDD
    647-UPW1V100MDD
    647-UPW1H331MPD
    647-UPW1H331MPD
    647-UPW1E102MPD6
    647-UPW1E102MPD6
    647-UPW1H102MHD
    647-UPW1H330MED
    647-UPW1V101MPD
    647-UPW1H220MDD
    647-UPW1V100MDD

    667-ECQ-V1H104JL
    667-ECQ-V1H474JL
    667-ECQ-V1H564JL
    667-ECQ-V1H564JL
    647-UKL1H010KDDANA
    647-UKL1H010KDDANA
    647-UKL1H3R3KDDANA
    647-UKL1H3R3KDDANA
    647-UKL1H4R7KDDANA
    647-UKL1H4R7KDDANA
    647-UKL1E6R8KDDANA
    647-UKL1H100KDDANA
    647-UKL1H100KDDANA
    647-UKL1H100KDDANA
    647-UPW1H010MDD
    647-UPW1H010MDD
    647-UPW1H3R3MDD
    647-UPW1H4R7MDD
    647-UPW1V100MDD
    647-UPW1H330MED
    647-UPW1V470MED
    647-UPW1V470MED
    647-UPW1A101MDD
    647-UPW1H101MPD
    647-UPW1V221MPD
    647-UPW1V221MPD



    647-UPW1V100MDD
    647-UPW1A221MED
     
    Last edited: Jul 11, 2014
  3. jtee1340

    jtee1340 AK Subscriber Subscriber

    Messages:
    632
    Location:
    Tampa Florida
    Thanks!!!

    Thank you very much Mark,
    This will get me going nicely. :banana: I have recapped several big Sansui amps but never Pioneer. I read that the outputs on this unit are NLA and have seen a mod that I think you did to use other outputs.
    Hopefully that will not be the case.
    One question,
    Are these all electrolytic caps or all the caps in the 1280?
    Just curious.
    Thanks again for the list.
    J.T.
     
  4. bktheking

    bktheking Gitter Done!

    Messages:
    13,501
    Location:
    Ottawa Ontario
    I have one in my email from skibjr if you want.
     
  5. markthefixer

    markthefixer On Hiatus, dealing with Dad's estate full time Subscriber

    Messages:
    20,389
    Location:
    Bensenville,Illinois
    electrolytics only - including tantalum etc in the 0.1uf 1.0uf range.

    There are several transistors, and diodes, starting with the power supply and protection, that need beefing up.
     
  6. jtee1340

    jtee1340 AK Subscriber Subscriber

    Messages:
    632
    Location:
    Tampa Florida
    Thanks BK.
    PM sent
    J.T.
     
  7. distortion13

    distortion13 New Member

    Messages:
    24
    I am getting ready to start recapping a SX-1280. I see that the capacitor list includes the Electolytics. Does anyone have a list that includes the ceramics and mylars as well? Also, what other components should be swapped out / upgraded? I hear there are some transistors and diodes in the power supply that get pretty hot and could use replacement to help future reliability.
     
  8. bktheking

    bktheking Gitter Done!

    Messages:
    13,501
    Location:
    Ottawa Ontario
    Ceramics and mylar caps don't need to be replaced, that's why they aren't in the list.
     
  9. distortion13

    distortion13 New Member

    Messages:
    24
    I am deep into re-capping a SX-1280 and am currently on the Power Supply, AWR-157. I see some discrepancies between the schematic I have and the board components. On my power supply, there is no capacitor in C24 and judging by the nice, never soldered copper of one of the through hole pads, there never was a cap in this position. the schematic calls for a 10uF cap in this location. In addition, the measured value of R21 is 2K ohms (measured in the board) while the schematic calls for a 3.9K resistor in this position.

    Thank you to all that contribute to this forum for getting me this far. Any help on these specific items would be greatly appreciated.
     
  10. tsd71

    tsd71 Gittin Some Head!

    Messages:
    2,575
    Location:
    New Jersey
    Replace what you pull, if it's a 10UF cap, and the manual says 2.2uf, install the 10uf....if there is nothing on the existing board and the manual calls for a cap in that position, just follow what is there physically on the board...You are doing very well so far! Good luck!
     
    Last edited: Oct 4, 2014
  11. markthefixer

    markthefixer On Hiatus, dealing with Dad's estate full time Subscriber

    Messages:
    20,389
    Location:
    Bensenville,Illinois
    there have been inquiries about the sx-1280 transistors.

    I still have not reverse engineered the power amps, and there's a few diodes listed but wioth no replacements. look like 1n4148 BUT I have not examined them deeply

    These are MORE than recommended replacements, it's a full repair list IIRC... but to sit on it doesn't help anyone.

    so here it is:

    sx-1280 EQ Amp
    sx-1280 awf-031 c1 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awf-031 c2 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awf-031 c17 3.3 25 ceanl 647-UKL1H3R3KDDANA
    sx-1280 awf-031 c18 3.3 25 ceanl 647-UKL1H3R3KDDANA
    sx-1280 awf-031 c21 4.7 25 ach318nonpolar 647-UEP1V4R7MDD
    sx-1280 awf-031 c22 4.7 25 ach318nonpolar 647-UEP1V4R7MDD
    sx-1280 awf-031 c5 33 35 cea 647-UPW1H330MED
    sx-1280 awf-031 c6 33 35 cea 647-UPW1H330MED
    sx-1280 awf-031 c9 470 6 cea 647-UPW1E471MPD
    sx-1280 awf-031 c10 470 6 cea 647-UPW1E471MPD
    sx-1280 awf-031 q1 2sa906 512-KSA992FBU
    sx-1280 awf-031 q2 2sa906 512-KSA992FBU
    sx-1280 awf-031 q3 2sa906 512-KSA992FBU
    sx-1280 awf-031 q4 2sa906 512-KSA992FBU
    sx-1280 awf-031 q5 2sc1400 512-KSC1845FTA
    sx-1280 awf-031 q6 2sc1400 512-KSC1845FTA
    sx-1280 awf-031 q7 2sc1885 512-KSC2690AYS
    sx-1280 awf-031 q8 2sc1885 512-KSC2690AYS
    sx-1280 awf-031 q9 2sa912 512-KSA1220AYS
    sx-1280 awf-031 q10 2sa912 512-KSA1220AYS


    sx-1280 Flat Amp
    sx-1280 awg-060 c5 4.7 25 ceanl 647-UKL1H4R7KDDANA
    sx-1280 awg-060 c6 4.7 25 ceanl 647-UKL1H4R7KDDANA
    sx-1280 awg-060 c9 100 10 cea 647-UPW1A101MDD
    sx-1280 awg-060 c10 100 10 cea 647-UPW1A101MDD
    sx-1280 awg-060 c15 100 10 cea 647-UPW1A101MDD
    sx-1280 awg-060 c16 100 10 cea 647-UPW1A101MDD
    sx-1280 awg-060 c17 220 35 cea 647-UPW1V221MPD
    sx-1280 awg-060 c18 220 35 cea 647-UPW1V221MPD
    sx-1280 awg-060 q1 2sk117 do not change
    sx-1280 awg-060 q2 2sk117 do not change
    sx-1280 awg-060 q3 2sa726 512-KSA992FBU
    sx-1280 awg-060 q4 2sa726 512-KSA992FBU


    sx-1280 tone Amp
    sx-1280 awg-059 c11 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c12 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c13 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c14 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c19 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c20 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c27 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c28 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c29 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c30 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c35 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c36 2.2 50 ceanl 647-UKL1H2R2MDDANA
    sx-1280 awg-059 c1 4.7 25 csza 647-UKL1H4R7KDDANA
    sx-1280 awg-059 c2 4.7 25 csza 647-UKL1H4R7KDDANA
    sx-1280 awg-059 c3 4.7 25 csza 647-UKL1H4R7KDDANA
    sx-1280 awg-059 c4 4.7 25 csza 647-UKL1H4R7KDDANA
    sx-1280 awg-059 c43 10 25 csza 647-UKL1H100KDDANA
    sx-1280 awg-059 c44 10 25 csza 647-UKL1H100KDDANA
    sx-1280 awg-059 c17 100 10 ach312pol 647-UPW1A101MDD
    sx-1280 awg-059 c18 100 10 ach312pol 647-UPW1A101MDD
    sx-1280 awg-059 c33 100 10 ach312pol 647-UPW1A101MDD
    sx-1280 awg-059 c34 100 10 ach312pol 647-UPW1A101MDD
    sx-1280 awg-059 c37 100 16 ach311polpsbyp 647-UPW1V101MPD
    sx-1280 awg-059 c38 100 16 ach311polpsbyp 647-UPW1V101MPD
    sx-1280 awg-059 c39 100 16 ach311polpsbyp 647-UPW1V101MPD
    sx-1280 awg-059 c40 100 16 ach311polpsbyp 647-UPW1V101MPD
    sx-1280 awg-059 q1 2sc1312 512-KSC1845FTA
    sx-1280 awg-059 q2 2sc1312 512-KSC1845FTA
    sx-1280 awg-059 q3 2sc1312 512-KSC1845FTA
    sx-1280 awg-059 q4 2sc1312 512-KSC1845FTA






    sx-1280 Filt Amp
    sx-1280 awm-119 c1 0.22 35 csza 598-DSF050J224
    sx-1280 awm-119 c2 0.22 35 csza 598-DSF050J224
    sx-1280 awm-119 c3 0.22 35 csza 598-DSF050J224
    sx-1280 awm-119 c4 0.22 35 csza 598-DSF050J224
    sx-1280 awm-119 c5 4.7 25 csza 647-UKL1H4R7KDDANA
    sx-1280 awm-119 c6 4.7 25 csza 647-UKL1H4R7KDDANA
    sx-1280 awm-119 c11 10 25 csza 647-UKL1H100KDDANA
    sx-1280 awm-119 c12 10 25 csza 647-UKL1H100KDDANA
    sx-1280 awm-119 q1 2sc1312 512-KSC1845FTA
    sx-1280 awm-119 q2 2sc1312 512-KSC1845FTA
    sx-1280 awm-119 d1 1s2473
    sx-1280 awm-119 d2 1s2473


    sx-1280 Meter Amp
    sx-1280 awm-121 c1 1 50 cea 647-UPW1H010MDD
    sx-1280 awm-121 c2 1 50 cea 647-UPW1H010MDD
    sx-1280 awm-121 c3 10 16 cea 647-UPW1V100MDD
    sx-1280 awm-121 c4 10 16 cea 647-UPW1V100MDD
    sx-1280 awm-121 q1 2sc1919 512-KSC1845FTA
    sx-1280 awm-121 q2 2sc1919 512-KSC1845FTA
    sx-1280 awm-121 d1 1s2471
    sx-1280 awm-121 d2 1s2471
    sx-1280 awm-121 d3 1s2076
    sx-1280 awm-121 d4 1s2076
    sx-1280 awm-121 d5 1s2471
    sx-1280 awm-121 d6 1s2471
    sx-1280 awm-121 d7 1s2473



    sx-1280 prot
    sx-1280 awm-123 c5 10 16 cea 647-UPW1V100MDD
    sx-1280 awm-123 c2 22 16 cea 647-UPW1H220MDD
    sx-1280 awm-123 c16 33 16 cea 647-UPW1H330MED
    sx-1280 awm-123 c3 47 16 cea 647-UPW1V470MED1TD
    sx-1280 awm-123 c4 100 16 cea 647-UPW1V101MPD
    sx-1280 awm-123 c1 220 25 cea 647-UPW1V221MPD
    sx-1280 awm-123 q1 2sa733 o/c input 512-KSA992FBU
    sx-1280 awm-123 q2 2sc1438 relay drive 512-KSC2690AYS
    sx-1280 awm-123 d1 1s2471
    sx-1280 awm-123 d2 1s2473
    sx-1280 awm-123 d3 mz-130
    sx-1280 pc mt prot 653-MY2-02-DC48
    sx-1280 pc mt softstart 653-LY2-0-DC48


    continued on next post (part 2), this is part 1
     
    Last edited: Dec 23, 2015
  12. markthefixer

    markthefixer On Hiatus, dealing with Dad's estate full time Subscriber

    Messages:
    20,389
    Location:
    Bensenville,Illinois
    part two:

    sx-1280 pwr amp
    sx-1280 awh-074L c16 0.22 35 csza 598-DSF050J224
    sx-1280 awh-074L c3 1 35 ceanl 647-UKL1H010KDDANA
    sx-1280 awh-074L C3.1 1 35 ceanl 5989-100V1.0-F
    sx-1280 awh-074L c1 100 35 cea 647-UPW1H101MPD
    sx-1280 awh-074L c2 100 35 cea 647-UPW1H101MPD
    sx-1280 awh-074L c8 100 80 cea 647-UPW2A101MHD
    sx-1280 awh-074L c9 100 80 cea 647-UPW2A101MHD
    sx-1280 awh-074L q1 2sc1775
    sx-1280 awh-074L q2 2sa979
    sx-1280 awh-074L q3 2sc2291
    sx-1280 awh-074L q4 2sa899
    sx-1280 awh-074L q5 2sc1904
    sx-1280 awh-074L q6 2sa733
    sx-1280 awh-074L q7 2sc945
    sx-1280 awh-074L q8 2sa733
    sx-1280 awh-074L q9 2sc945
    sx-1280 awh-074L q10 2sc1904
    sx-1280 awh-074L q11 2sd608
    sx-1280 awh-074L q12 2sa899
    sx-1280 awh-074L q13 2sb628
    sx-1280 awh-074L q14 2sc869 512-KSC2310YBU
    sx-1280 awh-074L d1 1s2473
    sx-1280 awh-074L d6 sib01-02
    sx-1280 awh-074L d7 sib01-02
    sx-1280 awh-074L d8 1s2473
    sx-1280 awh-074L d9 1s2473
    sx-1280 awh-074L d10 1s2471
    sx-1280 awh-074L d11 1s2471
    sx-1280 awh-074L vr1 150k 25 turns offset adjust 652-3296P-1-204LF
    sx-1280 awh-074L vr2 100 ohms 1 turn idle current 652-3386H-1-101LF



    sx-1280 pwr amp
    sx-1280 awh-074R c16 0.22 35 csza 598-DSF050J224
    sx-1280 awh-074R c3 1 35 ceanl 647-UKL1H010KDDANA
    sx-1280 awh-074R C3.1 1 35 ceanl 5989-100V1.0-F
    sx-1280 awh-074R c1 100 35 cea 647-UPW1H101MPD
    sx-1280 awh-074R c2 100 35 cea 647-UPW1H101MPD
    sx-1280 awh-074R c8 100 80 cea 647-UPW2A101MHD
    sx-1280 awh-074R c9 100 80 cea 647-UPW2A101MHD
    sx-1280 awh-074R q1 2sc1775
    sx-1280 awh-074R q2 2sa979
    sx-1280 awh-074R q3 2sc2291
    sx-1280 awh-074R q4 2sa899
    sx-1280 awh-074R q5 2sc1904
    sx-1280 awh-074R q6 2sa733
    sx-1280 awh-074R q7 2sc945
    sx-1280 awh-074R q8 2sa733
    sx-1280 awh-074R q9 2sc945
    sx-1280 awh-074R q10 2sc1904
    sx-1280 awh-074R q11 2sd608
    sx-1280 awh-074R q12 2sa899
    sx-1280 awh-074R q13 2sb628
    sx-1280 awh-074R q14 2sc869 512-KSC2310YBU
    sx-1280 awh-074R d1 1s2473
    sx-1280 awh-074R d6 sib01-02
    sx-1280 awh-074R d7 sib01-02
    sx-1280 awh-074R d8 1s2473
    sx-1280 awh-074R d9 1s2473
    sx-1280 awh-074R d10 1s2471
    sx-1280 awh-074R d11 1s2471
    sx-1280 awh-074R vr1 150k 25 turns offset adjust 652-3296P-1-204LF
    sx-1280 awh-074R vr2 100 ohms 1 turn idle current 652-3386H-1-101LF




    sx-1280 pwr sup reg
    sx-1280 awr-157 c13 10 35 cea 647-UPW1V100MDD
    sx-1280 awr-157 c14 10 35 cea 647-UPW1V100MDD
    sx-1280 awr-157 c24 10 10 cea 647-UPW1V100MDD
    sx-1280 awr-157 c11 22 35 cea 647-UPW1H220MDD
    sx-1280 awr-157 c12 22 35 cea 647-UPW1H220MDD
    sx-1280 awr-157 c23 22 10 cea 647-UPW1H220MDD
    sx-1280 awr-157 c21 33 25 cea 647-UPW1H330MED
    sx-1280 awr-157 c22 100 16 cea 647-UPW1V101MPD
    sx-1280 awr-157 c7 220 80 cea 647-UPW2A221MHD
    sx-1280 awr-157 c8 220 80 cea 647-UPW2A221MHD
    sx-1280 awr-157 c15 330 25 cea 647-UPW1H331MPD
    sx-1280 awr-157 c16 330 25 cea 647-UPW1H331MPD
    sx-1280 awr-157 c18 1000 16 cea 647-UPW1E102MPD6
    sx-1280 awr-157 c19 1000 16 cea 647-UPW1E102MPD6
    sx-1280 awr-157 c20 1000 25 cea 647-UPW1H102MHD
    sx-1280 awr-157 c5 470 100 ceb 647-TVX2A471MCD AXIAL CAPS!! try sideways radials
    sx-1280 awr-157 c6 470 100 ceb 647-TVX2A471MCD AXIAL CAPS!! try sideways radials
    sx-1280 awr-157 q1 2sd712 x x 512-KSC2073TU
    sx-1280 awr-157 q2 2sb682 x x 512-KSA940TU
    sx-1280 awr-157 q3 2sc1914 x x 512-KSC2383YTA
    sx-1280 awr-157 q4 2sa904 x x 512-KSA1013YBU
    sx-1280 awr-157 q5 2sb682 x x 512-KSA940TU
    sx-1280 awr-157 q6 2sc945 x x 512-KSC2383YTA
    sx-1280 awr-157 q7 2sc945 x x 512-KSC2383YTA
    sx-1280 awr-157 d1 x x x 512-1n4004
    sx-1280 awr-157 d2 x x x 512-1n4004
    sx-1280 awr-157 d3 x x x 512-1n4004
    sx-1280 awr-157 d4 x x x 512-1n4004
    sx-1280 awr-157 d5 x x x 512-1n4004
    sx-1280 awr-157 d6 x x x 512-1n4004
    sx-1280 awr-157 d7 mz-320 x x 512-1N5257B
    sx-1280 awr-157 d8 mz-320 x x 512-1N5257B
    sx-1280 awr-157 d9 mz-320 x x 512-1N4752A
    sx-1280 awr-157 d10 mz-320 x x 512-1N4752A
    sx-1280 awr-157 d11 x x x 512-1n4004
    sx-1280 awr-157 d12 x x x 512-1n4004
    sx-1280 awr-157 d13 mz-061 x x 512-1N5234B


    sx-1280 tuner
    sx-1280 awe-092 c27 0.1 35 csza 667-ECQ-V1H104JL
    sx-1280 awe-092 c28 0.47 50 cea 667-ECQ-V1H474JL
    sx-1280 awe-092 c44 0.56 35 csza 667-ECQ-V1H564JL
    sx-1280 awe-092 c45 0.56 35 csza 667-ECQ-V1H564JL
    sx-1280 awe-092 c38 1 25 csza 647-UKL1H010KDDANA
    sx-1280 awe-092 c39 1 25 csza 647-UKL1H010KDDANA
    sx-1280 awe-092 c42 3.3 16 csza 647-UKL1H3R3KDDANA
    sx-1280 awe-092 c43 3.3 16 csza 647-UKL1H3R3KDDANA
    sx-1280 awe-092 c70 4.7 16 csza 647-UKL1H4R7KDDANA
    sx-1280 awe-092 c76 4.7 16 csza 647-UKL1H4R7KDDANA
    sx-1280 awe-092 c40 6.8 6 csza 647-UKL1E6R8KDDANA
    sx-1280 awe-092 c35 10 16 csza 647-UKL1H100KDDANA
    sx-1280 awe-092 c49 10 16 csza 647-UKL1H100KDDANA
    sx-1280 awe-092 c73 10 16 csza 647-UKL1H100KDDANA
    sx-1280 awe-092 c32 1 50 cea 647-UPW1H010MDD
    sx-1280 awe-092 c37 1 50 cea 647-UPW1H010MDD
    sx-1280 awe-092 c61 3.3 50 cea 647-UPW1H3R3MDD
    sx-1280 awe-092 c62 4.7 35 cea 647-UPW1H4R7MDD
    sx-1280 awe-092 c67 10 16 cea 647-UPW1V100MDD
    sx-1280 awe-092 c79 33 16 cea 647-UPW1H330MED
    sx-1280 awe-092 c46 47 10 cea 647-UPW1V470MED
    sx-1280 awe-092 c47 47 10 cea 647-UPW1V470MED
    sx-1280 awe-092 c83 100 6 cea 647-UPW1A101MDD
    sx-1280 awe-092 c81 100 16 cea 647-UPW1H101MPD
    sx-1280 awe-092 c36 220 16 cea 647-UPW1V221MPD
    sx-1280 awe-092 c78 220 16 cea 647-UPW1V221MPD


    sx-1280 Sw assy
    sx-1280 gws-173 c9 10 16 cea 647-UPW1V100MDD
    sx-1280 gws-173 c10 220 6 cea 647-UPW1A221MED
    sx-1280 gws-173 q1 2sc945 512-KSA992FBU

    sx-1280 fuse 12a ceramic 576-0326012.HXP
     
  13. suitekids

    suitekids Active Member

    Messages:
    102
    Location:
    Palm Springs, FL
    Does anyone know why my 1280 goes right to music when i turn it on? It clicks but it's already putting out sound???
     
  14. suitekids

    suitekids Active Member

    Messages:
    102
    Location:
    Palm Springs, FL
    I also did not see the large filter caps, I believe the originals are 15000uf, can they be 18000???
     
  15. rcs16

    rcs16 Super Member

    Messages:
    2,693
    Location:
    Baldwin, Ontario, Canada
    best guess, someone put a short across the relay contacts, C to NO terminals, if so it would be a stupid thing to do and should be fixed. take a good look at the relay wiring. Weird that you get the relay click, if the relay contacts are welded together.
    When you power down, what do you hear, is it nasty?
    Sure you can, the 1250 uses 22000uF/80V , could even go a bit higher, they cost reduced on the 1280, you can increase the voltage as well, no need to go over 100V. test the ecaps, might be just fine and do not need replacing.
     
  16. suitekids

    suitekids Active Member

    Messages:
    102
    Location:
    Palm Springs, FL

    Yes, when I turn it off it thumps on both speakers, its a low sounding thump, but it is quite audible, and I really appreciate your help
     
  17. KingBubba

    KingBubba "Too Much Stuff" Subscriber

    Messages:
    8,148
    Location:
    Brooksville, Fl.
    Relay is either faulty or fused shut. In either case you should replace the relay. The other thing it could be is that somewhere in the protection circuitry something is sending the solenoid a signal when it should not be.
     
  18. suitekids

    suitekids Active Member

    Messages:
    102
    Location:
    Palm Springs, FL
    Thanks Bubba, I ordered the complete parts list for the protection board AWM 123, there is one relay on it, its the ASR-04 8-A, I'm assuming its the 653-MY2-02-DC48 that mark had listed for replacement, along with all the diodes and transistors, and caps and mylars, then I'll move on to power supply, amp boards, and so on, just redo the whole damn thing, it will out live me then, I have asked a few guys to re-do it but they are so busy, i will have to attempt it myself now, thanks for the tip, It has been a thorn in the side for quite sometime, had it fixed 3 times and always does the same thing 2 days after getting it back, thank god the out put transistors are still good, once it goes thru its thump, it will surely play loud and proud, but i turn it off quickly, mainly because it isn't right, so as it sits not in the system, sure looks pretty (MINT) but still a 70lb door stop
     
    Last edited: Mar 19, 2017
  19. KingBubba

    KingBubba "Too Much Stuff" Subscriber

    Messages:
    8,148
    Location:
    Brooksville, Fl.
    Good luck with your project. Be very sure of protecting the output transistors as they are truly unobtanium, although they do show up on the bay on occasion. You will need to pull them and replace the thermal compound, which is now dry as dust. Make a DBT, dim bulb tester, and don't fire up your unit without it. Take lots of pics prior to any dismantle. Pull one component at a time and replace. Look at the component carefully because sometimes what is on the schematic or in the service manual, is not what they installed. Always replace with what was installed. Have fun.
     
  20. suitekids

    suitekids Active Member

    Messages:
    102
    Location:
    Palm Springs, FL
    Thanks again Bubba, I have a DBT I made a couple years back with a 150w bulb for this unit. I have also purchased some used boards and stripped them of their parts and I have now in conjunction with the complete list by Mark to make it new again. I also picked up some new testing equipment made by Atlas that will check the transistors and tell me the values along with the diode tester, and capacitor tester, these little meters help a rank amateur like myself pinpoint some issues while the parts are still on the board, pretty cool stuff actually. The outputs seem fine at this point, but i made sure its unplugged and sitting in the man cave ready for its dissection. Currently I have all new parts (everything) for power supply board, protection board including relay, and both power amp boards. A six pack of Deoxit, and my favorite solder sucker the Engineer SS-02, I know I got my work cut out for me, but its fun to bring an old timer back to life..like me
     
    Last edited: Apr 15, 2017

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