Was using my ps-100 when it started to sound like a clocked wah my tone got real thin and then died completely. I opened it up and can see no burnt fuses and the tubes still light up but nothing except when of course I
press the bypass switch. I would like to send it to you for repair
Welcome to the forum!
Sounds like a power tube failure. Are you comfortable working on the amp yourself? Or do you have a tech who could check it out for you? Basically, just need to make sure that the power tube failure didn’t take out any other components, replace tubes and check bias, and monitor for a bit to make sure that nothing else is going on. When you opened it up, was there any red plating?
I had a feeling you would say power tubes however the both light up just fine no red plating. I have no local tech and really would like to ship it to you as I believe it not to be power tune or fuse related.
At the time of failure I also smelled something electrical
the tube heaters coming on and the plates not red plating are not the only indicators of failure in tubes, by far. additionally, the fuse can be burnt and still look intact. visual indicators are NOT meaningful to diagnose either of those components.
fuse can be diagnosed with a multimeter or other continuity meter. if you don’t have one, replace with a known good (new) fuse. you should have some onhand anyhow.
tubes can be checked with a tube tester but I’m guessing the vast majority of people don’t have one. if the amplifier is is known working condition, they can be checked in situ by checking bias current and behavior at max power, but it sounds like you’re not sure if the amplifier is in working order or not. the most expedient test would be to put a set of known good (new) tubes in, along with new fuses (or check the current fuses with a multimeter) and see if that fixes things. like the fuses, you should have a set of new tubes onhand anyway. I can understand why someone might be hesitant to do that with a brand new set of tubes these days if a fault is expected.
I discovered inner fuse with meter showed no continuity . I’m going to order new fuses and 6550 matched set of power tubes and I’ll let you know then how it turns out thank you.