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Topic: need help with Deluxe Verb. |
scott anderson
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Posted 8 May 2001 6:04 pm |
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I have a early 70's Deluxe verb. that sounds great. and is very quiet amp but I had never played it longer then about a 30-40 min.s at a time. The other night it was on for about 2 hours and after about a hour it started to sound like somebody was crompling up paper. I unpluged the guitar and the sound was still there. we continued to play and if we played loud and a lot it would go away kinda, then when we would stop and talked awhile it would come back and get pretty loud. as soon as i put it on standby the crompling paper sound would go away. any help would be good. I love this amp.
Scott/Hawaii |
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Dave Van Allen
From:
Doylestown, PA , US , Earth
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Posted 8 May 2001 6:52 pm
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If you have never had any maintenance done on this amp, now's the time. Sounds like a "cap job" (capacitor replacement) is in order... the crackling sound is a classic symptom of deteriorated capacitors-lifespan from 10 to 30 years, and replacement will not hurt "vintage"value of the amp, it is a typical and important "maintenance" repair (if not done, you run the risk of seriously damaging other circuitry)
Take it to a good tube amp tech( I am sure you can find one SOMEWHERE in the Islands) it is relatively inexpensive and will set you up for another 30 years of fabulous Fender sound.
for lots more info visit the Fender Discussion Pages Forum "Fender Amps:vintage(before 1985)" section and scan thru the threads. You may even find a tech in your area...
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Matt Farrow
From:
Raleigh, NC, USA
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Posted 9 May 2001 3:53 am
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The "crumpling paper" sound can come from a few different places - I'd check the 100K plate resistors on the preamp tubes (these are the brown cylinders with brown, black, and yellow bands on them) because they can absorb moisture (esp. in the south where I live or Hawaii...) and will eventually arc internally causing a popping sound. If it only happens after the amp has been on for 2 hours, then it's a heat-related problem most likely.
If the amp has never been serviced, it should at least have its electrolytic capacitors replaced. These components were only designed to last for 10 years in normal use, and yours must be approaching 30 years old. That's like driving 10,000 miles on one oil change, or like putting 180,000 miles on a set of tires - it might work, but it's likely to end in disaster. A good tech would also measure and replace any resistors that he finds to be out-of-tolerance, ie any resistor that measures more than 20% higher or lower than its nominal value.
If you cannot find a competent tech in your area, you can send the amp to me. Please feel free to email me if you have any questions.
Matt Farrow
Pharaoh Amplifiers
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Matt Farrow
Marlen 9-string 6+2
Kustom K150
http://surf.to/pharaohamps
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