Help fixing a guitar Amp

Hello all.

My friend charged me with fixing his guitar Amp. It looked to be a simple problem, which was simply that the input socket was broken, a small metal clip wasn't touching the input section when a plug was inserted. After noticing the the headfone socket was the same, i simply switched them as he wasn't going to use the headfone bit.

Hooked it all up and the power led lights, but there is no sound from the speaker. Not even when you crank up the gain and volume knobs. I'v looked over the tracks in case some solder was crossing somewhere but it all looks good.

The Amp simply says it's a 'Rocket 10' and a serial number on the back reads '0289394'. Internet searches only got me to expired links about a practice amp.

Anyone have any ideas or can think of anything to try?

Cheers.

Chances are, that the headphone socket cuts out the main speaker when it's in use.
If you have replaced it with a known 'dodgy' socket, then there's your problem.

Yes, he needs to bypass the switch on the headphone socket.

Ah, i did wonder about that. I'll give it a try guys.

Cheers.