ok guys,it's dark here now.i can clearly see that v3 preamp tube has only one triode light not 2 as the other tubes.
that might be the problem.
i have to order a new preamp tube!
thanks again
i turned my amp on,played ch1 and switched to ch2 but there wasn't any sound.
what might that be!what is the problem?
any suggestion will be much appreciated!
thanks in advance!
BTW the other channels work fine!