What should I do if my amp blew a fuse?
“Lightning” (arcing) or amp shutdown (blown fuse) at this stage indicates a bad Rectifier Tube. If the Rectifier Tubes are OK, move on to testing the Power Tubes. Start with the POWER and STANDBY switches down (Off). Load in one Power Tube (any) ** (See Note 2 below).
Can a preamp tube cause a fuse to blow?
Whole sets of tubes do not fail. – Preamp tubes will not cause a fuse to blow. (whew… check that off the list!) Preamp tubes are not high voltage like power or rectifier tubes and will not cause a fuse to blow. – Feeding multiple fuses to an amp is not fixing it.
Do you always have spare fuses in your amp?
If you operate a tube amplifier, the golden rule is to always have spare tubes AND FUSES in your gig bag. Especially important – all of your spare fuses should be pre-inspected to be the correct value fuse your amp requires.
What happens when a fuse blows on an amplifier?
The fuse is in the amplifier to protect the amplifier’s circuit from tube failure and other extreme voltage issues! When the fuse blows, its not the fuse that’s actually bad. Obviously a blown fuse will no longer allow the amp to function… and that’s by design.
Why does my amp not turn on when I plug it in?
If you are seemingly not getting any power to the amp, then you are talking fuses, power cord or power transformer. Now the latter is unlikely, and a bad fuse is still the must likely culprit. If you just visually checked the fuse, then you didn’t really check it.
How can I tell if my amp has a blown fuse?
Also, listen for any noises the amp makes, since that could also help you determine the source of the problem. Car amps, for example, often have a green power LED light and a red “protect” light. The protect light often means a blown fuse, so you know to check the wiring when you see it.
What happens if you blow the fuse under the hood?
You’ve blown the fuse under the hood, and remember, fuses fail without burning the metal in half. Often times the solder inside either end melts before the actual fuse “blows”, causing the fuse to lose continuity even though it looks to be in tact. Just get a new fuse man.
What’s the best way to troubleshoot an amp in a car?
Turn off the power supply before handling the fuse. Make sure you deactivate the amp first. If you’re troubleshooting a car amp, turn off the car’s engine and remove the ignition key. Otherwise, unplug the amp from the wall. Always turn off the electricity before handling fuses or exposed wires.