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  1. #1

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    Default Assistance needed-Parts for Denon PMA-2000ivr/ output Transistors 2SK2967 needed

    So I'm back and just lika a neewbee I has got problems.
    18 months ago I had found the Denon at my transfer station and being fond of them I dragged it home.
    You folks helped me track down the issues it has and I am thankful indeed for that.
    It has at least two blown output Transistors 2SK2967 and I didn't want to mess with it then intill I had some more expirence with this work- So I did a little research and learning and after some minor projects and a number of repairs not the least of which was one of my MesaBoogie's I feel I am far more ready tackle the Output trans for this sweet amp.
    My problem inna a nutshell is finding replacements. Back when I was still in the discovery phase of this trip someone had sent me a link to them, but alas I have misplaced this link so I believe they are attainable.
    Many internet searches as well as a fine tooth combing through my e-mails have produced little to nothing. And so now I am asking for a pointer or two as to the best technique for finding these parts or their equivalent.

    Any and all suggestions would be apreiciated
    and thx
    Phill

  2. #2
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    Hello,
    They seem to be in stock at www.bdent.com, I recommend them highly and have never been disappointed.
    Cheers, Ken

  3. #3

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    Thx Ken
    They have them and you have made me very happy.
    I guess I need to develope a cache of retailers for the rare items and bdent.com will be the first.

    Thx again and hopefully iI will get back to this thread in a week or two with a sucess story.

    Phill

  4. #4
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    No problem, Phill, good luck with the repair.

  5. #5

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    Wow what nice clean power!!!!
    The denon pma-2000ivr is alive!!!

    I could only get two output transistors so I installed them and put it back together and held my breathe.
    Alas all lights came on but no sound but I was not detered.
    I spent some time with it checking voltages and found that both channels were recieving AC and converting to DC evenly and thought that was a good sign.
    I was however not getting any, Zero mv from the speaker outs so I began to suspect that the issue was twofold and began a long search on the Internets and came acrross a thread about the same amp purchased on e-bay but was DOA. The poster whose name escapes me sent the amp to the shop and eventaly back to the seller because it had been damaged in transit.
    Now this didn't take allott of imagination because this amp is very heavy and difficult to work with as a result. I placed it on a lazy Susan to mitigate its weight which helped emenesly because I could spin it around right to left.

    So I dismantled the front facia and all these wires and pots poped out and there was the fault looking at me.
    The main circut board had a crack in it in a uncomplicated area and that worried me as it didn't look as if a circut had been compromised, however on closer inspection there was one bit that had be separated and I was happy! Imagine that!

    So I fixed both and put it all back together- checked the DC offset and one channel read 1.6mv and the othe 14.5mv. Very noice I think.
    So now I am exhausted but listening to some sweet music coupled with an overwhelming sense of rightness- because as corny as this sounds way back when I was a kid and trying to put together a stereo from parts scavanged I had been told that one such amagamte would be great except that the "Output Transistors" on one side were blown, thus the mono amp. I loved the sound of it and thought it would be massive if I knew what in hell they "Output Trans" were and could fix them.
    It has now been done 35 years later and I recall this I feel the gloroius circle of life.
    That all for now

    Phill

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