Guitar - General/Crate amp problem

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Question
Jason,
I have a Crate GT65 guitar amp that is behaving strangely.  The overdrive level pot was malfunctioning so I replaced it with a new one.  Switched her on and all was good.  The next time I turned the amp on the green LED for the clean channel lit but hitting the pushbutton to switch to the overdrive channel did nothing.  The orange LED for the oD channel flickered on then reverted to the green.  I unplugged, re-plugged into a different outlet leaving the OD button engaged and all was OK again.  Turned everything off, came back a few hours later and was back to non-working OD channel status.  Unplugged the unit again, pushed OD switch in, re-plugged...working again.  I then moved amp back to its original location and outlet, plugged in, switched on and once again, all OK.  This morning, switched on and back to original problem...no switch to OD when button pushed.  Moved amp again, re-plugged, worked OK.  Now after the time it took to write this post, it's gone back to non-working status.  I was very careful when I removed and replaced the bad pot and, when the amp is working the pot works as it should.  I can't figure out why the unit works, then doesn't, then does, then doesn't.  Any ideas on what the problem may be and how to repair?  Many thanks!

Answer
Hi Fred, I don't know a whole lot about your amp, but I'm going to assume that the channel switching is handled by relays? I'd look there to see if there's something funny going on. If you unplug the amp, you could be resetting the relays & that could by why the problem is intermittent. Hope that helps man, let me know how it goes & if you need anything else, just drop me a line!
Peace - J.

Guitar - General

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Jason Fryer

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Jason Fryer is a Canadian musician, producer, recording engineer & music instructor. Born in Montreal, Quebec, he attended the Musician's Professional Workshop on scholarship from Montreal radio station CHOM FM, studied Classical Music & Art at Vanier College, & holds a degree from Herzing Institute in Micro Computer Electronics. A veteran of the Canadian Music Scene, Jason has had the honour of playing with some of Canada’s finest musicians. Juno & Maple Blues award winning artists such as Jerome Godboo, Eric Shenkman, Jerry Mercer, Steve Marriner & Matt Sobb, Al Wood, Murray Kinsley, Leigh-Anne Stanton, Rod Williams, Thomas Starwalker Clair, David Maracle, Greg Morency, Scott Price, Simon Meilleur & Bobby Watt are but a few of the many Canadian greats Jason has enjoyed sharing the stage with. He has also had the rare & esteemed privilege to work with & study under legendary producer/engineer & former V.P. of Island Records Rob Fraboni. (Bob Dylan, The Band, Eric Clapton, Keith Richards, The Rolling Stones, The Beach Boys, Joe Cocker, Bonnie Raitt) Rob's generosity in sharing his vast & expansive degree of knowledge & expertise in the field of sound recording has been an invaluable asset to Jason's development as a producer & recording engineer.

Experience

I have been playing guitar for over 30 years & tour regularly with my band River City Junction. We play a mix of Blues, Jazz, Funk, Motown, R&B & Classic Rock so I can help answer any questions related to these genres as well. I also have extensive experience using many different brands of guitars, amplifiers & effects. I do most of my own work on my guitars, & I also build & repair my own pedals & tube amps, so I can help with questions of a technical nature with regards to these subjects as well.

Organizations
River CIty Junction Tone King Records

Education/Credentials
Musician's Professional Workshop Scholarship (CHOM FM)
Vanier College (Classical Music - Guitar)
Herzing Institute (Micro-Computer Electronics)
Have taken numerous online courses in recording/engineering

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