Just finished refreshing this board. I had to replace all the SMD electrolytic caps, they were all bad and leaked on the board, so also had a lot of work restoring destroyed pads/vias/traces. Not even sure if it works in the end as I got only the board so I can't test it.
I replaced the 4x 6V 100uF caps by some solid polymer 16V 100uF, and the 13x 16V 10uF by some 10uF 1206 MLCC. The 2x 50V 1uF were replaced by some garbage through hole with the same ratings, I don't think it'll matter that much. The cap at C44 looked like it was ripped off, no idea what it was so left it off, I don't think it matters either.
Anyway, since there doesn't seem to be any info on the web about this, I'm uploading pictures after the work and also the dump from the socketed EPROM (I removed it to clean the board so I thought why not dump it, if ever someone needs it they would be very happy to find it here…).
HN27C4096AG-12_KR-370_70781789.BIN.zip
I replaced the 4x 6V 100uF caps by some solid polymer 16V 100uF, and the 13x 16V 10uF by some 10uF 1206 MLCC. The 2x 50V 1uF were replaced by some garbage through hole with the same ratings, I don't think it'll matter that much. The cap at C44 looked like it was ripped off, no idea what it was so left it off, I don't think it matters either.
Anyway, since there doesn't seem to be any info on the web about this, I'm uploading pictures after the work and also the dump from the socketed EPROM (I removed it to clean the board so I thought why not dump it, if ever someone needs it they would be very happy to find it here…).
HN27C4096AG-12_KR-370_70781789.BIN.zip
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