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Author Topic: 2 of power amp tubes glowing really bright!!!  (Read 1892 times)

TomW

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2 of power amp tubes glowing really bright!!!
« 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
Riff Raff/Stormy Monday, Holydiver and Mississippi Queen!!!
www.myspace.com/therealamorist

Transcend

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2 of power amp tubes glowing really bright!!!
« Reply #1 on: April 01, 2008, 10:18:23 PM »
i arent sure about your valves but rockshack in burley do maintenance fairly cheaply.

TomW

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2 of power amp tubes glowing really bright!!!
« Reply #2 on: April 01, 2008, 10:59:46 PM »
Cheers, I'll check them out
Riff Raff/Stormy Monday, Holydiver and Mississippi Queen!!!
www.myspace.com/therealamorist

Ratrod

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2 of power amp tubes glowing really bright!!!
« Reply #3 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.
BKP user since 2004: early 7K Blackguard 50

TomW

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2 of power amp tubes glowing really bright!!!
« Reply #4 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.
Riff Raff/Stormy Monday, Holydiver and Mississippi Queen!!!
www.myspace.com/therealamorist

ailean

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2 of power amp tubes glowing really bright!!!
« Reply #5 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.
Gibson LP std + Nailbomb set
Diezel VH4 & Orange Rockerverb 50