People im writting cause i had at principle a little problem when turn the ch1 knob up or down, i try to clean it but i have another one but diferent model and y just remove the potetiometer 10k from the one i don't use it easily. At here everything looks good but when i try to remove the bad potentiometer i was using an hakko iron and hakko smd rework station so i stupidly burn the board and i can't see where the printed circuit cause i pull it out and there are components that isn't connected yet working in a bad condition .
My english its noy very well as you can see, im from Tijuana Baja California ,Mexico and i come here front of you asking for a lilttle guide i just need to make the jumpers to get a clear sound, on my speakers .
in the ch2 no problems and are working fine if you can take a picture of the board i will appreciate infinite times thank you!!!!