I turn the amp on with the guitar plugged in and the amp outputs no sound except a high pitch squeal when i turn the volume
Before you spend any money, try re-seating all of the tubes. I would remove then put the tubes back in one at a time. UNPLUG the amp during the re-install process. Some tubes run on high voltage dc which will fry you in a second.
If this happens only when the guitar is plugged in, most likely there are two possibilities. The first, you have some issues with the electronics in the guitar OR are using an acoustic guitar witch has an extremely sensitive pickup that provides nothing but feedback. If this is happening with the guitar unplugged, there is a mountain of possibilities.
SOURCE: Electric Guitar wont play through Amp
the buzzing is indicative of an open ground connection, check the cord by substitution or with an ohm meter, if the cord is good look at the connections to the jack inside the amp ( im guessing you built the amp from a kit). Is this a solid state amplifier? Tube amps have lethal votages and should not be experimented on without knowledge of electronic safety. Also if there is more than one input to the amp try plugging the guitar into another one and see if its still the same.
SOURCE: Guitar amp shows power but has no sound, could it be a blown fuse
Nine times out of ten, any problem with an amp having no sound coming out, it's a wiring issue. Make sure all of the wires internal to the amp are propely hooked up. Also, try switching out the quarter inch cord you are using from your guitar to your amp. Could be a bad cable. Unless you have blown the speaker completely, something is loose or not hooked up properly.
SOURCE: amp turns on but no sound even with diff guitars and cords
Hi Dan
I wish I could just say what to fix, but you can not do this at home. Line 6 is a great amp and worth the time taking it down to the music shop , to be looked at an give you a repair estimate. good luck keep on rocking in the free world. DFD
SOURCE: NO sound through the AMP even though the power light comes on
Not a fuse. First thing, to check your speaker (amp unplugged, of course), touch the + and - speaker connections to a 9V battery. If you don't hear a pop sound then your speaker is blown. Thus, no output sound. If speaker is OK, then the output IC is your problem.
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