View this post on Hive: Inspecting a Fender Princeton Reverb guitar amplifier
Inspecting a Fender Princeton Reverb guitar amplifier
7 years ago by amberyooper (69)
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I am a big fan of your amplifier posts. I hope to do some myself in the near future. I have a couple of I amps I am going to be doing some work on.
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Thank you!
I think it would be pretty cool if you were to do a few of these posts! I look forward to seeing them.
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I have a bassman 10 (I think I mentioned it to you before) that when you plug into the 'studio' side and turn the treble pot, there is a relitively quiet (but still pretty audible) oscillation that happens and changes frequency as you turn the pot. I need to figure out what is going on with it.
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Well, that is an interesting problem! There may be a broken lead on one of the parts in that section of the circuitry, or possibly a capacitor way out of spec.
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Yeah, it is all original. The I was going to replace all of the caps anyways and if that doesn't do it, maybe I will discover the problem in the process.
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Tube tester! need to see if old friend could get me one from auctions. I have an old Cathode Ray Oscilloscope if anyone wants to trade :P
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You could probably find a tube tester on ebay also.
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any suggestions? this too old? https://www.ebay.com/itm/Vintage-Rare-Supreme-Radio-Set-Model-85-Wooden-Tester-Tube-antique-estate-find/372266056993?hash=item56acc93d21:g:xywAAOSwWxxawXPR
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That's quite the old tester! It's probably too old, and the auction says that it's not working, so it's probably not a good one to buy. You at least want one that works.
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yea saw a better one but price jumped in no time flat.. https://www.ebay.com/itm/Vintage-KNIGHT-MODEL-400A-TUBE-TESTER-MANUAL/282905991886?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
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Yeah, I'm not surprised. The Knight tester is a pretty good one. The one I have is similar to that one.
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Great Article (How to) you're a pro engineer my friend :))
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