Issue with MSU-1 music. Left channel louder than right.

[AndehX]

I have a strange issue I've only recently noticed.  The left channel is louder than the right channel when playing MSU-1 audio.  Sound effects are unaffected.
I have a Rev. F. SD2SNES with the MSU-1 audio fix pcb by borti4938.  Any ideas what could cause this?

[AndehX]

Well that was a bit anti-climactic...  Turns out one of the pins on the TS922 chip (Output 1 to be exact) wasn't soldered.  I've had this installed in my SD2SNES for almost 2 years now, and only just noticed this issue with MSU-1 audio /facepalm.

Anyway.  I guess this could be useful if anyone else has a similar issue.  Check your soldering.

[Richardragon87]

Hmm... that pins situation is interesting. But for me I just turned the audio boost off as music in Castlevania Dracula X was way over the game and removing the boost balances it.

[AndehX]

yeah, I can't remember who I bought the PCB fix off of, but he obviously either didn't check his soldering, or just completely forgot to solder that pin.  All good now though.  I have the audio boost turned off too.
Working on my own personal Super Metroid MSU-1 pack.  Bit tedious having to "normalise" all the music, but the result is pretty cool

[Richardragon87]

yeah, I can't remember who I bought the PCB fix off of, but he obviously either didn't check his soldering, or just completely forgot to solder that pin.  All good now though.  I have the audio boost turned off too.
Working on my own personal Super Metroid MSU-1 pack.  Bit tedious having to "normalise" all the music, but the result is pretty cool

I just love the fact it too me WAY to long to figure out that the boost needed to be set of off to balance it, I went through every setting going up till I almost gave up... how long did it take you to notice it needed it too?

[AndehX]

I'd set it to off when I originally installed the audio fix pcb as that was the point of installing it to begin with.

[celindachen]

In any case thank you for helping me.