Fix or replace Accuphase DC 91 DAC?
I see the chips are available for sale on Ebay but don’t know if one is bad or even if an other component on the board is causing the problem. I thought in your original post, that you already knew it was the Accuphase, and that the qualified audio guy narrowed it down to the dac chip (D to A Convertor) chip. My mistake, as just a swap of the channels would have indicated the Accuphase. Yes it may not even be the PCM63’s maybe the i/v stage or the l/p filter stage or the output buffer. Yes these card/s house the PCM63’s and the I/V and maybe the buffer. https://s-media-cache-ak0.pinimg.com/736x/9c/8e/7c/9c8e7ca238a92ee114616a00b3203796--professional-audio-le-son.jpg As czarivey said $1500 is a bit steep, seeing it’s so easy to remove the faulty card I think in the order of $200 -400 would sound about right, the parts will be no more than $50. I have a passion for R2R multibit as it’s the only conversion around that converts Redbook (pcm) "bit perfect" all other coverters only give a facsimile. Better still give it to me, it's 22 years old now and I’m poor and needy. Cheers George |
This one of the great R2R multibit dacs, that does justice to Redbook . I'd buy it off you if you were in Australia. http://www.ebay.com/itm/1X-PCM63P-K-20-Bit-Monolithic-Audio-IGITAL-TO-ANALOG-CONVERTER-PCM63-/120827998139?hash=item1c21e8efbb:m:mqWgY3j6zmxl-vpzTM4vQ5w Or you'll have to purchase an old cdp on ebay to get hold of a PCM-63 chip if one of them is playing up. Here is a list of cheaper players that used them, there are many many more very expensive ones, but just get a cheap one for the part. AKAI CD-79 Creek DAC-60 Monarchy Audio Model 22, 22A, 22B, 22C, 24 and 33 Parasound 1500 and 1600 Pioneer PD73, PD93 Cheers George |
