Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty . Remember to disconnect all power including ground for about to 1/2 hour to discharge capacitors. You might get lucky and get a reset.
.A thumbs up would be greatly appreciated if this answer is helpful to you.
If you had the power on, and you touched the speaker + - together, you might have just smoked your amp. The only thing you can hope for is that a fuse is blown. Other than that, you might be looking at gettin it fixed or replaced
check you have a good ground connection, make sure all wires are correctly installed and make sure it is not shorting out (ie none of the wires are in contact with one another) failing this will need more details.
Sometimes problems like this are caused by tiny strands of wire in the amp. These can cause catastrophic amplifier failure. If you pull the cover off of the amp, you should be able to see the strands (if they're present). If that's not the problem, you should send the amp back to PG for repair.
Before you pull the cover, completely disconnect power from the amplifier.
Look up the part numbers on the components themselves. I can assure you that they are readily available from places not named PG. They are made in a factory with a bunch of diffenent Brands. If simply trying to repair the knob you may be able to use another knob from different Manufacturer if it takes the same jack for wire.
Probably the power is not received by the heating coil, check fuse near the power cable (inside the flap on the iron bottom), or sometimes there is fuse in the power pulg of the power chord. It is rarely that the lamp is blown