VOGONS


First post, by Jccwu

User metadata
Rank Newbie
Rank
Newbie

Hello colleagues.
Bought this card a few months ago.
This card has a problem, namely, the right channel does not work for it. I can only hear sound from the left channel with headphones.
I changed LF353 and NEC D6376 but it had no effect.
How to correctly diagnose the card in order to understand where its malfunction is?

20211229-225213.jpg
20211229-225405.jpg 20211229-225410.jpg 20211229-225418.jpg 20211229-225423.jpg

Reply 1 of 4, by Tiido

User metadata
Rank l33t
Rank
l33t

Do other WB cards work correctly on the sound card you attached this one to ? It looks like you already checked all the passives and probably found all to check out and since you swapped the DAC and opamp there isn't much more left that can be bad besides host sound card having a problem in one channel. If LRCLK wasn't pulsating then the DAC wouldn't output anything at all so the problem shouldn't be with the sound chip side or on the WB card itself.

T-04YBSC, a new YMF71x based sound card & Official VOGONS thread about it
Newly made 4MB 60ns 30pin SIMMs ~
mida sa loed ? nagunii aru ei saa 😜

Reply 3 of 4, by Tiido

User metadata
Rank l33t
Rank
l33t

Ok, then do a test where you connect DAC output pins directly to the WB header outputs (first separating the existing opamp circuit output), there should be sound and possibly quiet one but if even then one channel is missing it may be that the sound chip itself is bad and not actuall outputting one of the channels... 🙁

T-04YBSC, a new YMF71x based sound card & Official VOGONS thread about it
Newly made 4MB 60ns 30pin SIMMs ~
mida sa loed ? nagunii aru ei saa 😜