Hi, thought i'd run this by you-all.....
I'm going thru a TZ & the music is real low while the voice & sound effects are normal.
Board is A-12738. The amp chip has been changed (crappy job someone did). Since the voice comes thru good, that rules out the amp & the MC3340 op amp. Looking at a schematic of a different wpc sound board is labeled low pass & high pass. It's possible that the low pass isn't working (causing the music to be low volume), the schematic i have for my board A-12738 isn't labeled low pass etc. my guess would be U7 or U8 TLO84's. Any ideas will be appreciated!!