Electric Guitars/Amp Question

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Question
Recently, my amplifier has been acting pretty strange. I've been playing on an Engl Screamer head for about four years, and I've replaced the power tubes twice--no problems. But recently, my amplifier has been making some strange sounds: it's been crackling and popping, picking up radio signals, and suffering from SIGNIFICANT volume drops. Every time I try to record the sound, I can't make the amp replicate the sound, so I tried to track down someone who had recorded the sound. If you'll go to this URL and listen to the audio link posted there, you can hear EXACTLY what I'm hearing from my amp (this guy's is a Peavey): http://www.guitarmasterclass.net/guitar_forum/index.php?showtopic=39144

I've replaced both my preamp and power tubes, so I know it's not the tubes. I don't even know where to start. The nearest amp tech lives about 4 hours away. I hope you can help me.

Thanks,

Matthew

Answer
Hi Matthew I heard that sound before, carbon based resistor plate loads are known for that exact problem. At this point I would do a cap job. This should fix it for you, look for bad solder joints when you are working on it. Good luck man let me know how it turns out.

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DR Kevin P Moore

Expertise

Guitars and cats make life so much better. Playing the guitar is a wonderful thing, fixing you guitar is not that hard. I have played since I was a kid and started to fix guitars and the other things that needed repair. I still repair guitars for friends and myself and do enjoy it. I rebuild old guitars to their former condition, all amps and music gear. That the mystery out of where and when a guitar was made. The value of it and the difference between junk and a guitar you can grow old with. Ask me things and have some fun.

Experience

The fascination with electric guitars is the top for me. I fix amps, wiring and put the things that fall off back on. The way to really set a guitar up and make it a player. Buying a guitar is an art, and good amps that will get out that tone we all look for, Zen guitar and amplifier is a way to approach it. Better is no worry ask an expert.

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Linkin Professional Org

Publications
Library of congress, five patients. I write on several guitar forums and many essays on guitar health.

Education/Credentials
PhD, MS, BA and a BS all from CMU. I have a BA from Mercyhurst College.

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