#1
The power/ standby lights on my Bugera 333xl work on the front of my amp, but recently I haven't been able to get any sound out of it. The power tubes don't glow at all, Is this likely to just need new valves?

I've had the amp a couple of years and replaced them once myself about a year ago, nothing has happened to it that I can think of that would cause problems recently.

Thanks!
#2
Do you still have your warranty?
Is it the infinium version?
How old are the power tubes?
Have you checked the fuses?
How are the preamp tubes doing?
Do you get any sound coming from the fx loop out?
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#3
Warranty will be out by now,
No it's the original (I believe) from a few years back,
They would be about a year,
Fuse in the back seems fine,
I think the pre amp tubes are glowing,
not sure how to check the fx loop!
#4
I think these were the ones that were notorious for burning the connector.

How many fuses did you check and by check how did you do it? With a volt meter or visually? Was it clear glass and the filament is intact?
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#5
i had a similar problem with a vox ac100cc. It blew a fuse and the power tubes. Lucky for me it was still under warranty and was repaired free of charge.
#6
Obviously not the fuse if it powers up. I checked the manual and it doesn't mention an HT fuse. If you get sound from the FX send then you can write off fuses and focus on the power section. Filaments aren't always obvious. Are you in the dark when you see the PT not glowing? Do you remember them glowing before the problem?
#7
Quote by R45VT
I think these were the ones that were notorious for burning the connector.

How many fuses did you check and by check how did you do it? With a volt meter or visually? Was it clear glass and the filament is intact?


ding ding ding we have a winner. lol R45VT.

at least it didn't start on fire.

always check a fuse with a meter, never by your eye. just check continuity.
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#8
^ yep, there is a white molex connector that atatches to the power section PCB. These are notorious for burning up in the original issues of the amp.
It is a white clip connector
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