Hello all. First post here, long time avid reader.
I was given a Pioneer A-80 several years ago. When powering up, the LED output level meter quickly maxes. It has also smoked the headphone resistors.
Right channel outputs have -72v DC on them, Left channel has 72v DC.
As I am learning, this seems to be a somewhat common problem. That said, I cannot find information regarding what might be causing this.
Anyone have ANY ideas where I might investigate first? This thing is a real rat's nest inside. If I could save some time by checking the likely culprits, I'd be most appreciative.
Thank you very much in advance.
I was given a Pioneer A-80 several years ago. When powering up, the LED output level meter quickly maxes. It has also smoked the headphone resistors.
Right channel outputs have -72v DC on them, Left channel has 72v DC.
As I am learning, this seems to be a somewhat common problem. That said, I cannot find information regarding what might be causing this.
Anyone have ANY ideas where I might investigate first? This thing is a real rat's nest inside. If I could save some time by checking the likely culprits, I'd be most appreciative.
Thank you very much in advance.
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So far, fuses are good.
I am not familiar with Non-Switching Amplifiers. I did read a tutorial a few years ago.
I'd love to have this running as I believe it was the first with a dedicated CD input. There's that historical attraction for me.
The fellow tech who gave it to me -- he had a repair shop years ago. I think he gave up on it and he purchased it as-is, but was never able to succeed with repairing it.
I am not familiar with Non-Switching Amplifiers. I did read a tutorial a few years ago.
I'd love to have this running as I believe it was the first with a dedicated CD input. There's that historical attraction for me.
The fellow tech who gave it to me -- he had a repair shop years ago. I think he gave up on it and he purchased it as-is, but was never able to succeed with repairing it.
True, but I'm persistent, albeit with not always with a lot of free time.
That said, this isn't something I'm going to flip, rather something I will see through to completion, no matter what.
That said, this isn't something I'm going to flip, rather something I will see through to completion, no matter what.
