Umk3 sound problem

xaryC

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Mar 9, 2012
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West-Vlaanderen, Belgium
Hi,

Some days ago I bought a umk3 pcb from ebay listed as 100% working but no sound.
For 10 bucks I tought I'd give it a go...

Just installed the game in my mk3 cab and there is sound, but it seems like it's not amplified.
When I adjust the volume in the menu, the volume goes up and down, but the sound is very flat and not as loud as my mk3 pcb.

Any ideas what I could check?

Voltages should be right because my mk3 pcb works perfect (?)
 
Problem solved

If anyone should encounter the same problem, try changing the tl084cn op-amp ic, it worked for me :D

I Also changed the 2200uF cap and the tda7240 amp, but the new tl084cn did the trick!

My umk3 pcb is fully operational again, and this for 10 bucks plus a few bucks for the parts :D

I can finally sleep again ;)
 
Good work on the fix. Thanks for updating this thread so we have it in the archives.
 
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