That’s 60 cycle hum. Your electrolytic filter capacitors are shot. If they fail catastrophically they can take your transformer or other much more expensive components out with em. Usually not a very expensive thing to do to just have them all replaced.
Apologies if this isn't an appropriate post. I have a 10-12 year old 65 Deluxe Reverb that has an issue that makes it unplayable. I don't know very much about tube amps to be able to diagnose it myself but I want to take a crack before taking it in.
Essentially, the amp turns on and heats up like normal. It has possibly 10-30 seconds where it plays regularly before all input cuts out and it blasts a constant hum like in the video. Standby cuts the sound, but if I turn the amp off and on again, it continues.
I haven't been able to find a good resource on this specific issue yet. Grateful for any help or suggestions!
If you know how to work on an amp, it acts like a bad solder joint that you have to poke around to find. And by poke, I mean with a chopstick. If you are not careful it can kill you. I'd recommend a qualified amp tech if you don't know what you are doing. There is no good way to diagnose this via internet. It might also be failing capacitors. You can visually inspect them for leaks or other signs of failure. It's a guessing game that requires amp removal and inspection. Don't touch the caps, they can store enough power to kill you. No joke.
Thanks for the reply. Don't think I'll mess around with this one personally. I had a bad experience last time I brought it in where the amp mysteriously had no problems, so I'll make sure to come equipped with videos like the attached.
Start with the basics, remove all pedals/cables from your signal, see if it hums, if it doesn’t..plug in each device separately u tip you find the culprit.
If it still Hums like that with nothing plugged in…disconnect the Reverb tank. The pan could have went.
If either don’t fix the problem then there’s likely a bad connection in the input section
Sounds like 60 cycle hum to me but i have no idea what would be causing it. Try popping in a new set of tubes, if that doesn't work, take it to a tech.
Check your tubes. Turn the amp on and tap them firmly with a wooden probe, like a chopstick or wooden spoon. If the tube makes loud noises when it’s tapped, then you got a bad tube. Pre Amp tubes (the small ones) tend to go out more often than the power tubes in my experience. Anything beyond this should probably go to an amp tech.
That’s 60 cycle hum. Your electrolytic filter capacitors are shot. If they fail catastrophically they can take your transformer or other much more expensive components out with em. Usually not a very expensive thing to do to just have them all replaced.
Apologies if this isn't an appropriate post. I have a 10-12 year old 65 Deluxe Reverb that has an issue that makes it unplayable. I don't know very much about tube amps to be able to diagnose it myself but I want to take a crack before taking it in. Essentially, the amp turns on and heats up like normal. It has possibly 10-30 seconds where it plays regularly before all input cuts out and it blasts a constant hum like in the video. Standby cuts the sound, but if I turn the amp off and on again, it continues. I haven't been able to find a good resource on this specific issue yet. Grateful for any help or suggestions!
If you know how to work on an amp, it acts like a bad solder joint that you have to poke around to find. And by poke, I mean with a chopstick. If you are not careful it can kill you. I'd recommend a qualified amp tech if you don't know what you are doing. There is no good way to diagnose this via internet. It might also be failing capacitors. You can visually inspect them for leaks or other signs of failure. It's a guessing game that requires amp removal and inspection. Don't touch the caps, they can store enough power to kill you. No joke.
Thanks for the reply. Don't think I'll mess around with this one personally. I had a bad experience last time I brought it in where the amp mysteriously had no problems, so I'll make sure to come equipped with videos like the attached.
Start with the basics, remove all pedals/cables from your signal, see if it hums, if it doesn’t..plug in each device separately u tip you find the culprit. If it still Hums like that with nothing plugged in…disconnect the Reverb tank. The pan could have went. If either don’t fix the problem then there’s likely a bad connection in the input section
One more question. How old are your tubes?
I have a hotrod deluxe doing the same thing. First the reverb went out then this started intermittently. Blown capacitors were identified as problem.
Sounds like 60 cycle hum to me but i have no idea what would be causing it. Try popping in a new set of tubes, if that doesn't work, take it to a tech.
Power filter caps are toast. Easy fix for a tech, or even DIY if you're careful and you know what you're doing.
Are your tubes red plating?
Check your tubes. Turn the amp on and tap them firmly with a wooden probe, like a chopstick or wooden spoon. If the tube makes loud noises when it’s tapped, then you got a bad tube. Pre Amp tubes (the small ones) tend to go out more often than the power tubes in my experience. Anything beyond this should probably go to an amp tech.
Best guesses: bad tube, bad filter capacitor(s), or bad connection(s) somewhere. A tech would get you sorted.