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P2200 Resto - Fools Endeavour

Discussion in 'Yamaha' started by dondoucette, Nov 19, 2018.

  1. dondoucette

    dondoucette AK Subscriber Subscriber

    Messages:
    502
    Location:
    Regina, Saskatchewan Canada
    So this P2200 arrived today...
    5AEA7B8D-B8E1-4060-A3E5-60243D447CBB.jpeg
    It has several problems, bad transformer, bent sub chassis, messed up amp boards.

    18368A17-4B80-4004-9EAB-FA24240C3817.jpeg
    61FC471D-90DA-4AE6-B827-B3645D03E5C8.jpeg
    72FE4E72-8023-492F-A4B4-4036CD1B37EA.jpeg
    14648E13-C049-4957-B268-A64BA0FB7E7E.jpeg

    I have everything OEM needed to make this a whole amplifier again, am i wasting my time?

    E3D85576-4EC2-447F-B99B-35D55121A45C.jpeg 11EE487D-FEF3-401F-820D-7F85FD675082.jpeg
     

     

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  2. avionic

    avionic " Black Knights " Subscriber

    Messages:
    44,578
    Location:
    Fort Dodge, Iowa
    That's for only you to decide.
     
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  3. OnTheBlitz

    OnTheBlitz ->"Dad, It's time to play stick!""Throw it again!" Subscriber

    Messages:
    20,270
    Location:
    -27.125817, -109.276726
    ^^What he said^^
    With added: Well, you have all the parts. That's a good start.
     
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  4. avionic

    avionic " Black Knights " Subscriber

    Messages:
    44,578
    Location:
    Fort Dodge, Iowa
    Hell no. Its a Yamaha. Geter done.:thumbsup:
     
    dondoucette and Bratwurst7s like this.
  5. brunomarcs

    brunomarcs Member

    Messages:
    56
    I’ve seen these and have watched a few on evilbay, almost bought one. Are they desirable are they a decent/good amp?
     
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  6. Amplifierz

    Amplifierz New Member

    Messages:
    45
    Location:
    Middelburg,The Netherlands
    @brunomarcs They are considered reliable good sounding amps if in reasonable condition. Only thing that keeps people from buying them is that it doesn't have speaker protection circuit.
     

     

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  7. dondoucette

    dondoucette AK Subscriber Subscriber

    Messages:
    502
    Location:
    Regina, Saskatchewan Canada
    Yeah I’m on it... damn Yammies... this franken-yamaha will have to remain mine, as I can not in good conscience sell it.
    But then again who am I fooling... I haven’t sold a single Yamaha in the past 8 years...
     
  8. brunomarcs

    brunomarcs Member

    Messages:
    56
    Thanks for the info, I’ll probably wind up with one. Just won two cx 1000’s and a CD has remote for one pre and CD
     
  9. amr2

    amr2 Well-Known Member

    Messages:
    548
    If you are interested I have a thread with info to add a speaker protection module
     
  10. brunomarcs

    brunomarcs Member

    Messages:
    56
    I will be interested in the speaker module in due time once I buy the amp. I’m sure the original poster will need it now, Thanks
     
  11. Mrvintage

    Mrvintage Member

    Messages:
    55
    Location:
    Parry Sound Ontario Canada
    Good evening fellow AK’rs I bought my first Yamie P 2200 new in 1978 when I was sixteen and I loved it and I still have and use it. I DJ’d on the road with my first one for 26 years and I never missed a beat lol. They have a crisp clean warm sound and made my variety of speakers sound great. I pushed Cerwin Vega PD 18’s, klipsch heresy II and celestial Denton’s at various times over the years. I love them so much so, I have recently purchased two more P 2200’s and a P 2100. Rick a fellow AK’r is going to give them some love’n and I will be putting them back is service in my vintage home system. YES repair that yamie
     
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  12. dondoucette

    dondoucette AK Subscriber Subscriber

    Messages:
    502
    Location:
    Regina, Saskatchewan Canada
    Well here we go. Noticed R153 (10 ohm) had a dark heat mark around the middle, it measured 91 ohms out of circuit, replaced it.
    Just for interests sake i measured the emitter resistors in circuit, over 2k, hmmm. Removed one leg of each, open, all 3.
    FFF96119-93ED-4543-8D0B-EADC989F32D2.jpeg CA57A115-C578-4994-9993-CC04E7B5619A.jpeg

    Guess ill have to check the 2SC1586’s for shorts and see where that leads. I’ll report what i find here.
     

    Attached Files:

  13. avionic

    avionic " Black Knights " Subscriber

    Messages:
    44,578
    Location:
    Fort Dodge, Iowa
    Yep...And the 2SA909's
     
    Last edited: Nov 21, 2018
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  14. Watthour

    Watthour Electron Rancher - JS3600

    "Bad" transformer? Completely dead, or a secondary winding fault? I'll have to admit that I've never been in a Yammie transformer, but in several Pioneers (Bando). Even the "bad" ones are repairable. Despite the lack of an indication on the schematic, there may be a thermal fuse embedded in the winding.
     
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  15. dondoucette

    dondoucette AK Subscriber Subscriber

    Messages:
    502
    Location:
    Regina, Saskatchewan Canada
    So far, 3 open emitter resistor, 3 2SC1586 shorted and 1 2SA909 shorted...
    4313F759-2C30-4D45-9E6E-DCDF8ADA67E3.jpeg

    Also these boards have the lousy early 2SC1213A transistors in TR105, 106, 108, 110 and 113. Also TR114 is the 2SA673A of the same vintage.
    5FB922F3-0BAC-4D91-B3BB-9546B4A2F105.jpeg

    R139 is open. R140 is good.
    The rest of my .47Ω, 4.7Ω and 10Ω resistors are good.

    So what now...
    TR111-114, D110-113... anything else?

    Thanks for any help provided gentlemen.
     
  16. dondoucette

    dondoucette AK Subscriber Subscriber

    Messages:
    502
    Location:
    Regina, Saskatchewan Canada
    I will fully test the transformer when I get a minute, I’m willing to bet it’s more likely the power switch but I haven’t looked at any of that stuff yet.
     

     

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  17. dondoucette

    dondoucette AK Subscriber Subscriber

    Messages:
    502
    Location:
    Regina, Saskatchewan Canada
    TR111 2SD381 collector-emitter shorted
    TR112 is good
    TR113 is shorted (2SC1213A)
    TR114 is good
    TR109 is good
    D110 is shorted (can’t find a part number for this diode, looks like a 1N914, does anyone have a part number?)

    Any suggestions for replacements?

    The rest of the diodes on the board all tested good. Is there anything else that I’m overlooking?

    Also I was considering replacing the 100uf 10v electrolytic with a film type, just having a little trouble finding a place to mount it... LOL!

    B425770D-E061-4B79-AE7F-F517CA73FCC9.jpeg

    Once again thank for any assistance provided.
     
  18. amr2

    amr2 Well-Known Member

    Messages:
    548
    D110 -> 1S1555
     
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  19. amr2

    amr2 Well-Known Member

    Messages:
    548
    Use 1N4148
     
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  20. amr2

    amr2 Well-Known Member

    Messages:
    548
    I would change D111 also.
     
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