Help fixing a guitar Amp - Electronic Circuits Projects Diagrams Free

Myrmidon · 23rd June 2008, 03:09 PM

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.

House0Fwax · 23rd June 2008, 04:22 PM

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.

**Nigel Goodwin** · 23rd June 2008, 04:41 PM

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

Myrmidon · 24th June 2008, 11:31 AM

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

Cheers.

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23rd June 2008, 03:09 PM	(permalink)
Myrmidon	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. __________________ Hardcore Dance Music

23rd June 2008, 04:22 PM	(permalink)
House0Fwax	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.

23rd June 2008, 04:41 PM	(permalink)
Nigel Goodwin	Yes, he needs to bypass the switch on the headphone socket. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

24th June 2008, 11:31 AM	(permalink)
Myrmidon	Ah, i did wonder about that. I'll give it a try guys. Cheers. __________________ Hardcore Dance Music