billnchristy

Remember: dealing with super noob here.

Well, the preamp tube I'm suspicious of is a Groove Tube GT12AX7M (ECC83/7025)...basically a newer version of the 12AX7A (as I'm sure you're aware of). I'm suspicious of it because when I fire the amp up, all the tubes glow a nice soft orange at both the base (by the pins) and at the bottom (near the tip) except for this one. It glows soft orange just at the pins, the rest is dark.

Another question...the amp calls for a 2 1/2 amp 125 volt fuse. Will a 2 1/2 amp 250 volt fuse work just as well or must it be 125 volt?

Ideally I'm looking to troubleshoot as much as possible without opening the amplifier chassis. That's in over my head and I'd just end up electrifying myself.

I think I might have a bad preamp tube that's causing my fuse to blow...that's my initial hunch based on some stuff I've been reading up on. Basically the amp works fine for 2-10 minutes and then blows the fuse after crackling, cutting in and out, and then getting very soft in volume.

Thanks for the recommendation!

Yo Bill!

I was wondering if you know of a good tube amp forum. Remember me asking about that '77 Pro Reverb that I've been having problems with? I finally got it out of storage and am looking to fix it up (if possible). Didn't know if you had a site you could recommend or not.

TIA!

n

thats nuts. ours gets dropped off by like 2pm

Cool! Have you gotten anything yet?

I noticed, the forums arent as fun without you

I havent seen you in a little bit and was wondering how you were doing.

Funny running into you guys out there today, feel free to come back whenever

Happy Bday!!!

Happy Birthday!