marantz p700

Have a 2270 that developed some slight noise in the right channel when either Photo 1/2 selected with or without a turntable connected. All other inputs perfectly quiet. Research suggested the 2SC458's known to be problematic so I pulled these and replaced them with KSC1845's. Also replaced the...

I am having problems with one of my Marantz 4230 amplifier boards. I recapped both boards and recapped the power supply. I have also replaced all the transistors on both boards. I used TIP31CG for the outputs. I have pulled and checked the diodes and resistors. I have not replaced (but have on...