Just Bought a CR2040 - looking to refurb-- could use some info.

Discussion in 'Yamaha' started by John Hale, Jan 10, 2018.

  1. John Hale

    John Hale Member

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    I just bought a CR2040. Getting prepped to refurbish it. I am not an expert but I have already done a Pioneer SX3800, Marantz 2265B, so a little bit comfortable with this type of work. I have a service manual. However, the Yammy one does not include a parts list -- are those available? Caps list?

    I've read the threads on CR-1020 power supply mods and issues - is it similar for the 2040?

    Any areas in particular to switch out.pay attention to? For example my Pioneer - it was suggested (and I did) replace all Caps, All transistors (big Job). Marantz was mostly caps and a few transistors. Would like to have a pretty comprehensive Mouser/Digikey order (I live in Germany) so one shipment is better than multiple even if I don't end up replacing all the parts.

    I see a fella name Avionics on this forum (I'm an AF guy also) My daughter also happens to be an Avionics Tech.

    Thanks in advance, look forward to the new adventure. BTW I've been a stereo nut for about 45 years -- my first store bought reveiver was a Yamaha 4 something I believe, now coming full circle.

    John
     
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  2. avionic

    avionic " Black Knights " Subscriber

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    Not even remotely close.
     
  3. John Hale

    John Hale Member

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    Well I 'spose that's a good thing then. Thanks for the reply
     
  4. avionic

    avionic " Black Knights " Subscriber

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    I don't have any cap lists available. I usually make a list up with each piece of gear. Yamaha manuals are full of typo's.
     
  5. avionic

    avionic " Black Knights " Subscriber

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    Where did you down load the manual ?
     
  6. John Hale

    John Hale Member

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    Manual from hifi engine.
     

     

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  7. avionic

    avionic " Black Knights " Subscriber

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  8. John Hale

    John Hale Member

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    Thanks, Avionic - Does it have any add'l info? My one reads pretty well and had the Wiring dia. and schematics enlarged and printed from the plotter at work. However, if this othe rone has parts list might be worth it. Do you know of any Service bulletins for the 2040?
     
  9. LFazio51

    LFazio51 AK Subscriber Subscriber

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    YES! I had the one from HiFi Engine and purchased the one that @avionic is referring- it's the BOMB - wouldn't attempt restoration without this copy but I have a 1020 and the manual HFE offers is in really poor shape.
     
  10. avionic

    avionic " Black Knights " Subscriber

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    No I don't know of any SB's for the 2040.
     
  11. Overundr1

    Overundr1 AK Subscriber Subscriber

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    Btw, Avionics is one fine fella even if he does hang out down here in the Yamaha section rather than with us Sansui types :)
    And there are a few of us that feel the CR2040 is the cream of the crop in Yamaha receivers sonic-ally, listening to some tasty ten years after on mine as I type.

    -Lee

    .
     
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  12. avionic

    avionic " Black Knights " Subscriber

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    On my " when I get around to it " shelf is and 8080 and a 9090db..........And lots of black Yamaha.:biggrin:
     
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  13. John Hale

    John Hale Member

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    Toops already posted that.
     
  14. John Hale

    John Hale Member

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    Still waiting on the CR-2040 to come in the mail--- redoing a Technics SA-600 while I wait. should be week or so before it gets to Germany
     
  15. John Hale

    John Hale Member

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    Well got the CR2040 -- quite a handful to be sure. I've recapped it and am updating the small transistors. Life was good for the moment..... But as I was replacing and then testing (trying to go slowly and test every little step) -- SO long story short -- I blew all the output on one side and the pre drivers (all was working good but didn't have everthing fully screwed to the heat sink-- they heated up prety fast and pop, nothing) -- of course I have no replacement for those and haven't been able to find any info --- hoping to get some help ... (Dam just want to kick myself)

    So hoping to find a replacement for:

    SD736A (B,C)

    SB 700A (B,C)

    A968 (O,Y)

    C2238 (O,Y)

    thank folks -- other than that my day is fine --- f#$%K

    John
     
  16. Mr. Yamaha

    Mr. Yamaha Not so much Yamaha lately... Subscriber

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  17. avionic

    avionic " Black Knights " Subscriber

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  18. avionic

    avionic " Black Knights " Subscriber

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  19. avionic

    avionic " Black Knights " Subscriber

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    Mica insulators for the MT-200 Sankens transistors -- Search ( MT-200 Mica ) on ebay. or Amazon.

    The bay is cheaper..
    The OEM mica insulators will most likely not be wide enough for the MT-200 case style.

    [​IMG]
     

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  20. avionic

    avionic " Black Knights " Subscriber

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