Questions & Answers for: power tubes tube amplifier lighting

...power amp tubes light up but the pre amp tubes do not. I havent replaced the tubes do you think they are the problem. Thanks, dhu1988 There is a bridge rectifier and red and black wires jumping from ...

...Power Tubes don't light up and only peavey 5150 II Power Tubes don't light up and only preamp tubes 1, 2, 3, and 5 light up. I had this problem before but it was fixed under warranty a few years ago. ...

...power tubes will blow fuses, but there are other things that will blow fuses too.  If you know the amp needs new power tubes, replace those and the fuse at the same time. Most likely that will ...

If it's a preamp tube that went bad, just replace that one tube. If a power tube went bad then replace the set of power tubes. Be sure to get a matched set when replacing power tubes, and to bias them

power tubes are lighting up... all tubes are brand new too. What do i do?? It APPEARS that the preamp tube heaters are run from DC source while the latter ones and the power output tubes are run on AC

power tubes isn't a bad idea either. I would advise you to do the preamp tubes first and play through the amp for a few days first before changing the power tubes. Keep in mind... if a tube (or tubes)

new tubes aren't working Are the filament lighting ? are the tubes original or are they substitute ? Check your power supply and output transformer if its a power amplifier.

...power tubes are not lighting no sound when i turn on the pilots light however the power tubes dont and than they do and now it dont so no sound no filament power then, filament fuse open..blown ...

...power tubes I swapped 6l6 power tubes with 6v6 power tubes now there is no sound and the pilot light blew out The tubes are hot and glowing and there is no smell of anything burning and no signs of ...