This is wrong.Pull all the tubes, turn it on plugged into a Variac. Bring voltage up slowly starting at 10 volts then 10 more volts per hour. When you get to 117 volts, turn it off, put the tubes back in, and rock it. Assuming it didn’t pop any fuses or catch fire or anything.
I’d open it up and do a visual check. If he liked to tweak things it might not be finished or ready/safe to fire up. Not sure if that amp falls into the ungrounded plug era or not. If so I’d add some grounding for your own safety.
With the Variac down on voltage how can the bias be over voltage ? The bias wouldn’t get near over voltage until it’s up near 110-117 volts, no ? Or it shouldn’t (in theory anyway).This is wrong.
Don’t ever go to full working voltage on a vintage amp with all tubes pulled. You run the risk of over voltage filter caps since no tubes are pulling the B+ down.
I’d open it up and follow the circuit with a continuity meter from B+ to ground and make sure it doesn’t beep. If it does you’re in trouble before you even turn it on.
I’d verify no leaking caps visually and see if there’s anything unfinished as said earlier.
I’d check for loose components or anything in the chassis. If he tweaked he probably could have left something in it by accident.
Do use a variac to turn it on and I’d turn it on monitoring the tube bias on the power side carefully looking for runaway.
If it doesn’t have a grounded cord I’d install one first before doing anything at all.
With the Variac down on voltage how can the bias be over voltage ? The bias wouldn’t get near over voltage until it’s up near 110-117 volts, no ? Or it shouldn’t (in theory anyway).
I see that stock filter cap strapped to the chassis. That fucker looks original… which would be my concern.
Line 6 speakers. lol
What’s that stuff in the bottom?
Ordered a Variac and will kick it on with tubes REMOVED as suggested here.
Just saw this as my notifications are fucky.It was connected to effects as if it was in use but I'd like to make sure I don't harm it. Ordered a Variac and will kick it on with tubes removed as suggested here.
The amp works, one of the 6L6 tubes does not work, I will have to replace it. As a result it is low sound. The oil can reverb pulley works, the fan works, not sure if there is oil in the oil can. I think I will just sell it for a fair price and let someone else do all the work on it who knows way more about amps than I do. I know close to nothing.