Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: TerryD on June 16, 2014, 08:40:09 pm
-
I have a real nice Deluxe Reverb Copy called the Stinger "Texas Tornado". In any case I must have been swapping tubes and got a 5Y3 rectifier stuck in there. I didn't use the amp much because it sounded- distorted -like crap. I'll have to get the GZ34 back in there.
What should I do to make sure everything is Okay?
Would there be any advantage of putting a 5U4 rectifier in? If so what would I need to do to make it right?
Thanks, Terry
-
What should I do to make sure everything is Okay?
Plug in the correct rectifier. Play the amp. :icon_biggrin:
There was probably no harm. If there was damage, the rectifier would've died first. That would probably have shorted plate to cathode, which would have popped your fuse (there's a chance this scenario could damage a filter cap, but the fuse would probably die in time).
You hadn't mentioned any of that, so there was probably no ill-effect from the 5Y3.
-
Would there be any advantage of putting a 5U4 rectifier in?
The PT for that amp probable doesn't have the extra heater current for a 5U4.
5U4 needs 3A heater current, GZ34, 5V4 and 5Y3 only need 2A heater current.
Brad :icon_biggrin:
-
Thanks again!
-
No big deal at all. If I'm fixing an amp with a GZ34 rectifier, I generally throw a 5Y3 in there during the repairs. Basing wise, they are interchangeable for all practical purposes. I have loads of 5Y3s, some of them pretty old (WW2 vintage) and I would much rather blow up a 5Y3 than a GZ34. A 5Y3 should also reduce the B+ by say 25 volts or so during checkout.