Remote IR or RF bypass on Circuit board?

[Dankou]

Lost remote to home theatre system volume can be set externaly
but channel levels only on lost remote.
I would just like to bring up bass level a little and live with it
just wondered how one may work around adjusting subwoofer level on circuit board
could it be done by changing voltage at right IC pins if one was to figure out which ones?
have not found schematic as of yet but looking
Thanks for any ideas or help
Dan

Regent HT 391 home theatre

 

[CocaCola]

Why not get a replacement remote and get total function back? They are about $20 on Ebay...

As for doing it manually, chances are slim, it's likely call controlled with a micro in a solid state chip set... To make any changes you are almost certainly locked into pulsing in the correct IR signal and letting the micro controller do the rest...