Famicom Disk system RAM adapter volume is too low!

i have the ram adapter hvc fmr 03, on original famicom i have low volume on bios and floppy games....years ago worked fine. the famicom have no problem in sound with normal cart game and with edn8 with exp audio games too.

i checked the connections on U5 and they are ok. can be this component? the floppy games are still working fine but the sound is low.

i changed 1x 47uf 2x 1uf 2x 0,1uf 25v nothing changed...help

 

bbb

 

Caps will do this on a regular NTSC-U NES. For me it was just those where the AV/PSU connectors were. Had to crank up my stereo to the max just to barely hear it.

 

fixed myself