I'm new to repairing vintage amplifiers. Originally this amp would only work if I ran audio into the 'Main In' inputs on the back of the amp. The amp sounded great, but it bypasses the preamp with the volume and tone controls. Whenever I'd try to run audio through the preamp I wouldn't get sound. I deoxit'd everything - got it almost working 100%.
The left channel input on any of the preamp inputs (phono 1, phono 2, aux, tuner) will not work. However, both speakers will play perfectly if I run it in mono via the preamp. It also plays stereo perfectly with "Main In" - but I lose tone/volume controls. I don't think it's an amplifier problem since I can get both speakers to play. The fuses appear fine.
Any ideas? Appreciate the help.
The left channel input on any of the preamp inputs (phono 1, phono 2, aux, tuner) will not work. However, both speakers will play perfectly if I run it in mono via the preamp. It also plays stereo perfectly with "Main In" - but I lose tone/volume controls. I don't think it's an amplifier problem since I can get both speakers to play. The fuses appear fine.
Any ideas? Appreciate the help.