1280 recap info

jtee1340

AK Subscriber
Subscriber
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.
 
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:
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.
 
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.
 
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.
 
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.
 
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.

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:
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 512-1N4148
sx-1280 awm-123 d2 1s2473 512-1N4148

(sx-1280 awm-123 d3 mz-130 512-1N5243B
or
sx-1280 awm-123 d3 78-BZX55B13 vishay 13 V, 0.5w 2% zener 0.23 ea)

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:
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
 
Does anyone know why my 1280 goes right to music when i turn it on? It clicks but it's already putting out sound???
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?
I also did not see the large filter caps, I believe the originals are 15000uf, can they be 18000???
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.
 
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.
 
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.
 
I wonder how the OP went with his Recap ?
No more contact since July 12th 2014...
Sometimes a thread Hi jack can be a good thing.
It got me reading a fair bit.
 
Hello Awesomeaudio,
I actually did another 1280 since this recap. The list from Mark the Fixer was the ticket and most of it went pretty well. I had an issue with the power supply for a bit, but got it straightened out after paying very close attention to transistor pin configuration. That one can bite you.
I am working on a 1980 tuner issue, and have been out of pocket for a bit due to co-worker having a stroke and I am putting in some ot.
The 1250s I did after the 1280s were much easier to work on imho. They seem to be built for the tech to take apart and work on.
Regards,
J.T.
 
Hey mate, good to hear the project went ok.
Sorry to hear about your co-worker. Hope she/he is ok.
I don't have a 1280, but I like to read threads on equipment I don't have to try and learn about them.
I have a 1250, which I may consider refurbishing at some point. It doesn't need it at present as it is functioning quite well.
The previous owner (hifi shop guy) checked and verified it prior to shipping to me and it hasn't missed a beat.
 
A blast from the past ! Hoping to get a update for the Markthefixer Mouser list for Caps and then possibly the Transistors for the SX-1280. Mouser currently states they no longer have the below Caps in stock. If anyone has a current replacement part # or source for the below Caps, can you please post it for me. I am currently working on trying to get all the caps so I can get a 1280 I recently acquired freshened up.
Thanks!

mouser part # from Markthefixers list:
2. 647UKL1H2R2MDAANA

47. 598-DSF050J224

96. 667-ECQ-V1H104JL

97. 667-ECQ-V1H474JL

98. 667-ECQ-V1H564JL





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[/QUOTE]
 
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