Bare Knuckle Pickups Forum

Forum Ringside => Tech => Topic started by: TomW on April 01, 2008, 05:58:40 PM

Title: 2 of power amp tubes glowing really bright!!!
Post by: TomW on April 01, 2008, 05:58:40 PM
I've just been playing on my amp for about half an hour and no one was in the house so I decided to turn it up abit louder than usual and all of a sudden the amp started to hum really loud and the volume dropped slightly. So I looked in the back of my amp and 2 of the tubes were glowing really bright. Does this mean the tubes are gone?
If so does anyone know of a good guitar tech in Leeds that doesn't charge a fortune?
Cheers
Title: 2 of power amp tubes glowing really bright!!!
Post by: Transcend on April 01, 2008, 10:18:23 PM
i arent sure about your valves but rockshack in burley do maintenance fairly cheaply.
Title: 2 of power amp tubes glowing really bright!!!
Post by: TomW on April 01, 2008, 10:59:46 PM
Cheers, I'll check them out
Title: 2 of power amp tubes glowing really bright!!!
Post by: Ratrod on April 02, 2008, 01:35:11 PM
CAUTION!

There could be several things wrong.

The amp isn't properly biased;

The tubes aren't properly matched;

And/or the output transformer has made love.

Don't use the amp and have it checked by an amp tech.
Title: 2 of power amp tubes glowing really bright!!!
Post by: TomW on April 02, 2008, 01:39:56 PM
Cheers Ratrod, I'll hopefully be able to take it to an amp tech this weekend. I was thinking there may be something wrong other than the tubes as it wasn't too long ago that I had them replaced, but i'll just have to see. Hopefully it won't be something too expensive.
Title: 2 of power amp tubes glowing really bright!!!
Post by: ailean on April 02, 2008, 09:31:45 PM
Quote from: TomW
Cheers Ratrod, I'll hopefully be able to take it to an amp tech this weekend. I was thinking there may be something wrong other than the tubes as it wasn't too long ago that I had them replaced, but i'll just have to see. Hopefully it won't be something too expensive.


Could still be the tubes, new ones can be faulty.