Crate GX80 Channel switching

Carlosraj · 9th March 2010, 11:58 AM

Dear Everyone,

I am tyring to fix an old Crate GX80 guitar amplifier. This amp has a "channel select" switch and a footswitch to select channels . The problem with this amp is that, while playing it switchs from channel one to channel two and back repaetedly by itself. I would greatly appreciate if anyone has a schematic or solution to this problem.

Thank you

Carlosraj

llwhtt · 9th March 2010, 10:50 PM

I'm sure I have the schematic for that, I'll wade thru my pile o'stuff. Used to be a warranty station for SLM years ago. In the mean time does the amp switch back and forth with or without the footswitch or it doesn't matter? You will have to pull the PCB out for any type of repair so pull it out and check the solder joints on the footswitch jack. That's all I can suggest until I find the schematic. If the jack itself was bad it should work fine with the footswitch and not without it.

Craig

Enzo · 10th March 2010, 01:22 AM

Clean the cutout contacts on the footswitch jack. They get dirty - it does this.

9th March 2010, 11:58 AM	#1
Carlosraj diyAudio Member Join Date: Jan 2010	Crate GX80 Channel switching Dear Everyone, I am tyring to fix an old Crate GX80 guitar amplifier. This amp has a "channel select" switch and a footswitch to select channels . The problem with this amp is that, while playing it switchs from channel one to channel two and back repaetedly by itself. I would greatly appreciate if anyone has a schematic or solution to this problem. Thank you Carlosraj

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9th March 2010, 10:50 PM	#2
llwhtt diyAudio Member Join Date: Jun 2008	I'm sure I have the schematic for that, I'll wade thru my pile o'stuff. Used to be a warranty station for SLM years ago. In the mean time does the amp switch back and forth with or without the footswitch or it doesn't matter? You will have to pull the PCB out for any type of repair so pull it out and check the solder joints on the footswitch jack. That's all I can suggest until I find the schematic. If the jack itself was bad it should work fine with the footswitch and not without it. Craig

10th March 2010, 01:22 AM	#3
Enzo diyAudio Member Join Date: Sep 2004 Location: Lansing, Michigan	Clean the cutout contacts on the footswitch jack. They get dirty - it does this.

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