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OK...when I changed the bias circuit to adjustable bias I removed the TWO 80uf E-caps, converted to the adjustable bias circuit in the schematic the TheDude...
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Enzo - those voltage readings are with the tube INSTALLED. I did NOT pull the tube prior to taking measurements. Not sure where you got that idea?
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Fender TFL5005 vibrato not working
Hi All,
I have a Fender Bandmaster reverb TFL5005 I'm working on that came in for a rehab. I've got the amp sounding sweet, and everything is...
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No, wait - back up a minute - I can't find the 4.7 uF at 500V in a quality manufacturer. 20 uF was suggested as a viable alternative, "preferable"...
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Enzo, I'd love too, but I need to turn this one over. I've had it a while and need to get it back to the customer. The 4.7 uF at 500V is nearly impossible...
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That's the answer I was looking for! Thanks! Does a minimal value have any negative effect, other than to alter the attack?...
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The cap is in the screen node of the filter section, right after the choke.
The schematic is ubiquitous and can be found easily.
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Effect of screen node filter on tone
I'm working on a Fender Prosonic, doing a cap job. I was advised by a tech on another forum that I could take the original 4.7 uF filter up to around 20uF...
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1990's Fender Prosonic PCB - soldering pads on TOP of PCB?
Fender Prosonic question - I have a '90's Fender Prosonic in for a cap job and general "looking over"- looks like the original E-caps are still...
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Mid '60'S Gibson GA20 RVT tremolo not working
Hi all,
I'm working on a mid-60's Gibson GA-20 RVT Minuteman. The footswitch is missing. I managed to jumper the two lugs on the footswitch receptacle...
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OK, after a lot of reading, I think I see what you guys were driving at. In summary, the AC mains should have a dedicated ground point, as close to the AC...
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Well, Chuck - I had some problems understanding what you were trying to say. Re what grounding points you are actually referring to - "Grounding circuits...
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