pioneer amplifier

Dear all, i need help for this problem (i am quite good in integrated circuits and tubes, not in so complex transistor circuits). I recap the amplifier, clean everything and check the sound live and was quite good. Then i wish to adjust the bias and to do some measurements. I apply with signal...

Hello everyone. I have an old Pioneer amplifier SA 710. It has always worked very well, but for this morning the Riaa channel (left channel), emits almost exclusively static noise and Crackles. All other inputs (tuner, tape 1 and 2, aux) work very well. The static noise and the crackles increase...

Hello community, hoping everybody had a good week and is ready to attack the weekend projects. Speaking of, I got this Pioneer SA-9800 from a friend that is acting up. One channel sounds more or less OK (with a little Hum), the other one is completely distorted. I think the problem is the...

I hooked the spec 2 up a while back and let it play for around 10 minutes, then all the sudden I hear a small pop and smell something get hot, then I noticed the right meter was almost on 500 and the protection light was on. I had a yamaha cx-600/u pre-amp hooked up to it and it was playing just...

A very long time ago (1981) I purchased a brand-new Pioneer A-9 amp and it's held up well over the years. Lately however output from the right channel has been taking longer and longer to come up... a "warm up" issue I'm sure. As part of the first high-quality sound system I ever owned (A-9...