Pioneer sx-737 recap

Discussion in 'Pioneer Audio' started by Shutterdial, Apr 30, 2018.

  1. Shutterdial

    Shutterdial AK Subscriber Subscriber

    Messages:
    16
    IM Getting ready to do a complete recap on a playing 737. Would you guys recommend changing the transisters and if so which ones, or should i just leave them alone?
     

     

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  2. loweran

    loweran AK Subscriber Subscriber

    Messages:
    1,001
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    Austin, Texas
  3. larryderouin

    larryderouin Turn it UP, POP? PLLUUEEEZZZZZEE Subscriber

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    Location:
    Glen Burnie Md.
    Aw send him to a fairly new rebuild listing with the Transistors listed on the BOM. My list is over 5 years old.

    In order of IMPORTANCE on the 10 MOST Wanted and REVILED Transistors made list
    2sc1451
    2sc458
    2sa725
    2sa726
    2sc1312
    2sc1313
    2sc1384
    2sd313 (power supply only)

    Here's Mark The FIXER's EDITED Post from March 2018 where he added the changed RELAY # to the post. Apparently everything else is KOSHER! Follow it to the letter and that 737 will be reliable for another 30 years. Your Grandkids will be playing it and you can tell THEM to repair it.
    (now complete)

    AWX071 c5 220 6 647-UPW1E221MPD

    AWR057,8 PWR supply
    AWR057,8 c7 1000 50 ceb 647-UPW1H102MHD
    AWR057,8 c8 330 50 cea 647-upw1h331mpd
    AWR057,8 c9 330 50 cea 647-upw1h331mpd
    AWR057,8 c10 330 50 cea 647-upw1h331mpd
    AWR057,8 c11 220 16 cea 647-UPW1V221MPD
    AWR057,8 c12 220 50 cea 647-upw1h221mpd
    AWR057,8 c13 100 50 cea 647-UPW1H101MPD
    AWR057,8 c16 220 16 cea 647-UPW1V221MPD
    AWR057,8 c17 22 25 cea 647-UPW1h220mdd
    AWR057,8 c18 100 16 cea 647-UPW1E101MED
    AWR057,8 c19 100 35 cea 647-UPW1H101MPD
    AWR057,8 q1 2sd313 512-KSC2073TU
    AWR057,8 q2 2sc945 512-KSC2383YTA
    AWR057,8 q3 2sd313 512-KSC2073TU
    AWR057,8 q4 2sc945 512-KSC2383YTA
    AWR057,8 d1 sr3am-4 512-1N5404
    AWR057,8 d2 sr3am-4 512-1N5404
    AWR057,8 d2 sr3am-4 512-1N5404
    AWR057,8 d4 sr3am-4 512-1N5404
    AWR057,8 d5 1s1886 512-1n4004
    AWR057,8 d6 1s1886 512-1n4004
    AWR057,8 d7 1s1886 512-1n4004
    AWR057,8 d8 wz-130 512-1N5243B
    AWR057,8 d9 wz-140 512-1N5244B



    AWM025 PROT
    AWM025 c1 0.22 10 cssa 598-DSF050J224
    AWM025 c2 0.22 10 cssa 598-DSF050J224
    AWM025 c3 330 6 cea 647-upw1c331mpd
    AWM025 c4 330 6 cea 647-upw1c331mpd
    AWM025 c5 4.7 25 cea 647-UPW1H4R7MDD
    AWM025 c6 100 16 cea 647-UPW1E101MED
    AWM025 q1 2sc869 512-KSC1845FTA
    AWM025 q2 2sc869 512-KSC1845FTA
    AWM025 q3 2sc945 only if bad 512-KSC1845FTA
    AWM025 q4 2sc945 only if bad 512-KSC1845FTA
    AWM025 q5 2sa733 only if bad 512-KSA992FBU
    AWM025 q6 2sc945 512-KSC2383YTA
    AWM025 q7 2sc1384 512-KSC2690AYS
    chassis prot relay 653-LY2F-DC24



    AWH033 pwr amp
    AWH033 c1 0.33 25 cssa 598-DSF050J334
    AWH033 c2 0.33 25 cssa 598-DSF050J334
    AWH033 c7 220 6 cea 647-UPW1E221MPD
    AWH033 c8 220 6 cea 647-UPW1E221MPD
    AWH033 c9 47 35 cea 647-UPW1H470MED
    AWH033 c10 47 35 cea 647-UPW1H470MED
    AWH033 c19 22 10 cea 647-UPW1a220mdd
    AWH033 c20 22 10 cea 647-UPW1a220mdd
    AWH033 vr1 100 652-3386F-1-101LF
    AWH033 vr2 100 652-3386F-1-101LF
    AWH033 vr3 10k 652-3296Y-1-103LF
    AWH033 vr4 10k 652-3296Y-1-103LF
    AWH033 q1 2sa726 512-KSA992FBU
    AWH033 q2 2sa726 512-KSA992FBU
    AWH033 q3 2sa726 512-KSA992FBU
    AWH033 q4 2sa726 512-KSA992FBU
    AWH033 q5 2sc1451 512-KSC3503DSTU
    AWH033 q6 2sc1451 512-KSC3503DSTU
    AWH033 q7 2sd357 512-KSC2690AYS
    AWH033 q8 2sc357 512-KSC2690AYS
    AWH033 q9 2sb527 512-KSA1220AYS
    AWH033 q10 2sb527 512-KSA1220AYS
    AWH033 q11 2sd370 863-MJ21194G
    AWH033 q12 2sd370 863-MJ21194G
    AWH033 q13 2sb530 863-MJ21193G
    AWH033 q14 2sb530 863-MJ21193G

    AWG030 CTL AMP
    AWG030 c1 1 25 csza 647-UKL1H010KDDANA
    AWG030 c2 1 25 csza 647-UKL1H010KDDANA
    AWG030 c5 100 16 cea 647-UPW1E101MED
    AWG030 c6 100 16 cea 647-UPW1E101MED
    AWG030 c9 4.7 25 ceanl 647-UKL1H4R7KDDANA
    AWG030 c10 4.7 25 ceanl 647-UKL1H4R7KDDANA
    AWG030 c17 4.7 25 ceanl 647-UKL1H4R7KDDANA
    AWG030 c18 4.7 25 ceanl 647-UKL1H4R7KDDANA
    AWG030 c19 4.7 25 ceanl 647-UKL1H4R7KDDANA
    AWG030 c20 4.7 25 ceanl 647-UKL1H4R7KDDANA
    AWG030 c21 47 10 cea 647-UPW1H470MED
    AWG030 c22 47 10 cea 647-UPW1H470MED
    AWG030 c23 2.2 25 cssa 647-UKL1H2R2MDDANA
    AWG030 c24 2.2 25 cssa 647-UKL1H2R2MDDANA
    AWG030 c29 100 35 cea 647-UPW1H101MPD
    AWG030 q1 2sa726 512-KSA992FBU
    AWG030 q2 2sa726 512-KSA992FBU
    AWG030 q3 2sc1312 512-KSC1845FTA
    AWG030 q4 2sc1312 512-KSC1845FTA
    AWG030 q5 2sc1312 512-KSC1845FTA
    AWG030 q6 2sc1312 512-KSC1845FTA



    AWM066 MIC
    AWM066 c2 220 35 cea 647-UPW1V221MPD
    AWM066 c3 0.47 16 cssa 598-DSF050J474
    AWM066 c6 220 6 cea 647-UPW1E221MPD
    AWM066 c7 0.47 50 ceanl 598-DSF050J474
    AWM066 q1 2sc1344 512-KSC1845FTA
    AWM066 q2 2sc1344 512-KSC1845FTA

    AWF011 PHONO
    AWF011 c1 1 25 cssa 647-UKL1H010MDDANA
    AWF011 c2 1 25 cssa 647-UKL1H010MDDANA
    AWF011 c7 330 6 cea 647-upw1c331mpd
    AWF011 c8 330 6 cea 647-upw1c331mpd
    AWF011 c11 3.3 25 ceanl 647-UKL1H3R3MDDANA
    AWF011 c12 3.3 25 ceanl 647-UKL1H3R3MDDANA
    AWF011 c17 100 25 cea 647-UPW1H101MPD
    AWF011 c18 220 16 cea 647-UPW1V221MPD
    AWF011 Q1 2sa725 512-KSA992FBU
    AWF011 Q2 2sa725 512-KSA992FBU
    AWF011 Q3 2sc1313 512-KSC1845FTA
    AWF011 Q4 2sc1313 512-KSC1845FTA
    AWF011 Q5 2sc1313 512-KSC1845FTA
    AWF011 Q6 2sc1313 512-KSC1845FTA


    AWE043 TUNER
    AWE043 c25 4.7 25 cea 647-UPW1H4R7MDD
    AWE043 c27 10 16 cea 647-UPW1H100MDD
    AWE043 c28 0.47 50 cea 598-DSF050J474
    AWE043 c33 1 50 cea 647-UPW1H010MDD
    AWE043 c38 0.33 10 cssa 598-DSF050J334
    AWE043 c39 1 10 cssa 647-UPW1H010MDD
    AWE043 c40 0.47 10 cssa 598-DSF050J474
    AWE043 c49 0.47 50 cea 598-DSF050J474
    AWE043 c50 0.47 50 cea 598-DSF050J474
    AWE043 c58 4.7 25 cea 647-UPW1H4R7MDD
    AWE043 c59 47 6 cea 647-UPW1H470MED
    AWE043 c64 10 16 cea 647-UPW1H100MDD
    AWE043 c66 0.1 25 cssa 598-DSF050J
    AWE043 c67 220 16 cea 647-UPW1E221MPD
    AWE043 c68 100 16 cea 647-UPW1E101MED
    AWE043 q8 2sa725 512-KSA992FBU
    AWE043 q9 2sa725 512-KSA992FBU

    mouser parts list importer text block:

    647-UPW1E221MPD


    647-UPW1H102MHD
    647-upw1h331mpd
    647-upw1h331mpd
    647-upw1h331mpd
    647-UPW1V221MPD
    647-upw1h221mpd
    647-UPW1H101MPD
    647-UPW1V221MPD
    647-UPW1h220mdd
    647-UPW1E101MED
    647-UPW1H101MPD
    512-KSC2073TU
    512-KSC2383YTA
    512-KSC2073TU
    512-KSC2383YTA
    512-1N5404
    512-1N5404
    512-1N5404
    512-1N5404
    512-1n4004
    512-1n4004
    512-1n4004
    512-1N5243B
    512-1N5244B




    598-DSF050J224
    598-DSF050J224
    647-upw1c331mpd
    647-upw1c331mpd
    647-UPW1H4R7MDD
    647-UPW1E101MED
    512-KSC1845FTA
    512-KSC1845FTA
    512-KSC1845FTA
    512-KSC1845FTA
    512-KSA992FBU
    512-KSC2383YTA
    512-KSC2690AYS
    653-LY2F-DC24




    598-DSF050J334
    598-DSF050J334
    647-UPW1E221MPD
    647-UPW1E221MPD
    647-UPW1H470MED
    647-UPW1H470MED
    647-UPW1a220mdd
    647-UPW1a220mdd
    652-3386F-1-101LF
    652-3386F-1-101LF
    652-3296Y-1-103LF
    652-3296Y-1-103LF
    512-KSA992FBU
    512-KSA992FBU
    512-KSA992FBU
    512-KSA992FBU
    512-KSC3503DSTU
    512-KSC3503DSTU
    512-KSC2690AYS
    512-KSC2690AYS
    512-KSA1220AYS
    512-KSA1220AYS
    863-MJ21194G
    863-MJ21194G
    863-MJ21193G
    863-MJ21193G


    647-UKL1H010KDDANA
    647-UKL1H010KDDANA
    647-UPW1E101MED
    647-UPW1E101MED
    647-UKL1H4R7KDDANA
    647-UKL1H4R7KDDANA
    647-UKL1H4R7KDDANA
    647-UKL1H4R7KDDANA
    647-UKL1H4R7KDDANA
    647-UKL1H4R7KDDANA
    647-UPW1H470MED
    647-UPW1H470MED
    647-UKL1H2R2MDDANA
    647-UKL1H2R2MDDANA
    647-UPW1H101MPD
    512-KSA992FBU
    512-KSA992FBU
    512-KSC1845FTA
    512-KSC1845FTA
    512-KSC1845FTA
    512-KSC1845FTA




    647-UPW1V221MPD
    598-DSF050J474
    647-UPW1E221MPD
    598-DSF050J474
    512-KSC1845FTA
    512-KSC1845FTA


    647-UKL1H010MDDANA
    647-UKL1H010MDDANA
    647-upw1c331mpd
    647-upw1c331mpd
    647-UKL1H3R3MDDANA
    647-UKL1H3R3MDDANA
    647-UPW1H101MPD
    647-UPW1V221MPD
    512-KSA992FBU
    512-KSA992FBU
    512-KSC1845FTA
    512-KSC1845FTA
    512-KSC1845FTA
    512-KSC1845FTA



    647-UPW1H4R7MDD
    647-UPW1H100MDD
    598-DSF050J474
    647-UPW1H010MDD
    598-DSF050J334
    647-UPW1H010MDD
    598-DSF050J474
    598-DSF050J474
    598-DSF050J474
    647-UPW1H4R7MDD
    647-UPW1H470MED
    647-UPW1H100MDD
    598-DSF050J
    647-UPW1E221MPD
    647-UPW1E101MED
    512-KSA992FBU
    512-KSA992FBU

    EDIT 1/2/2015 CHANGED trimpots to types 3386F and 3296Y

    edit 2/7/18 changed ly 4f to ly2f, because the ly 4f has been redesigned substantially larger

    Last edited: Feb 8, 2018
    [​IMG]
    Nothing is ever completely fool proof, because fools are so ingenious.
    markthefixer, Jan 15, 2013 Report
    #5 Like + Quote Reply
     
  4. loweran

    loweran AK Subscriber Subscriber

    Messages:
    1,001
    Location:
    Austin, Texas
    Sorry Larry, I am kind of lazy at the moment. :O
     
  5. larryderouin

    larryderouin Turn it UP, POP? PLLUUEEEZZZZZEE Subscriber

    Messages:
    21,608
    Location:
    Glen Burnie Md.
  6. vulturon

    vulturon New Member

    Messages:
    5
    I am also working on a 737 and decided to start by replacing transistors that are known to fail. Based on some other threads, I will be doing this:

    replacing 2sa725 and 2sa726 transistors with KSA992FBU
    replacing 2sc1451 transistors with KSC3503DSTU
    replacing 2sc1312 transistors with KSC1845

    I read that these transistors should be replaced throughout the unit. But then I read that it's a bad idea to replace any transistors on the tuner board, because then an alignment will need to be performed. Is this true? Also, is it a good idea to start with these transistors as a first step, or is there something else I should be doing, too?
     

     

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  7. ivandezande

    ivandezande Super Member

    Messages:
    1,395
    Location:
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    Yes, don't replace those, it's true. If you're doing the transistors, you might as well do the caps, the trimmers.....
    It's sort of a rabbit hole. Plenty of 737 threads around here on AK, use Google and read up.
     

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