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  1. Thread: EPK pcb troubles

    by Zouto
    Replies
    2
    Views
    189

    Problems solved, after a short time I finally got...

    Problems solved, after a short time I finally got an answer, rechecked pcb and wiring, replaced a bad cable, the circuit is working fine now. The pcb was ok, internally broken ribbon cable was the...
  2. Thread: EPK pcb troubles

    by Zouto
    Replies
    2
    Views
    189

    EPK pcb troubles

    Hi, I got some EPK pcbs I ordered from their site https://effectpedalkits.com
    Checking the pcbs I fould out that they are faulty, missing continuity between several soldering pads, e.g. no...
  3. Replies
    3
    Views
    158

    VHT Pitbull 45 troubles

    On my bench is a broken VHT Pitbull 45 with blown filter caps, one slightly smoked 1watts resistor, no signal and no schematics. The amp has two double sided pcbs, which are absolutely hard to...
  4. Well, here‘s my plan, so you can get the angles...

    Well, here‘s my plan, so you can get the angles easily. I finished the cab yesterday, so next step is that %&§#≠>¿$£¥ drilling of the chassis mounting holes.....
  5. Bill, thanks, I‘ll go for 65 degrees. Zouto

    Bill, thanks, I‘ll go for 65 degrees.
    Zouto
  6. Most measurements are done except the correct...

    Most measurements are done except the correct angle of the chassis front. Since the faceplate is a bit deformed, I measure values of 64 and 66 degrees. So what´s the correct front angle, 65 degrees?
  7. Did you check/exchange the 250pf treble cap? I...

    Did you check/exchange the 250pf treble cap? I recently had a series of three brandnew faulty 250pf SilverMicas, which were leaking, causing lots of trouble as screeching, high DC Voltage on vol.pot...
  8. Replies
    4
    Views
    282

    Thanks a lot, I‘ll give it a try and hope, that...

    Thanks a lot, I‘ll give it a try and hope, that it will work with higher plate voltages.
  9. Replies
    4
    Views
    282

    Thanks Andy, schematics are also on this link...

    Thanks Andy, schematics are also on this link
    https://music-electronics-forum.com/showthread.php?t=46805
    Except two 6V6s, the Amp has rather odd 40/50s type tubes and a 3.2 Ohms, 12“speaker.
  10. Replies
    4
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    282

    Silvertone 1333 new Power Transformer

    Hi, I need a 110/240 Volts power transformer for a Silvertone 1333 as replacement for a blown original 110 Volts model.
    Schematics:
    http://schems.com/bmampscom/silvertone/silvertone_1333.pdf
    Any...
  11. Thanks Juan, as soon as I got all that stuff on...

    Thanks Juan, as soon as I got all that stuff on my bench, I‘ll start serious measuring. Also, remembering the last installation of a Fender chassis into a custom cabinet, the final drag will be...
  12. I think the following dimensions should fit: 19"...

    I think the following dimensions should fit: 19" x 25" x 10½" (48.3 x 63.5 x 26.7 cm), chassis cut-out 59,7 cm, similar to width and depth dimensions of a Vibroverb or a Super Reverb cabinet, but...
  13. 1x12“ Combo Cab for Fender Bandmaster Reverb TFL5005D

    Hi, I need plans/ drawings for a 1 x2“ combo cab for a trusty Fender Bandmaster Reverb TFL5005D chassis. Since I am no cabinetrist at all, a woodworking friend will/shall build it for me.
    Any help...
  14. Replies
    49
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    3,028

    I found a similar treated EL34 in a Matchless...

    I found a similar treated EL34 in a Matchless Chieftain several years ago, a good olˋ fetish for serious Voudou Biasing...
  15. Replies
    4
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    554

    Thanks a lot Chuck, I had an old obsolete...

    Thanks a lot Chuck, I had an old obsolete schemheaven link.
    Zouto
  16. Replies
    4
    Views
    554

    SF Pro Reverb MV non UL schematics?

    Hi, I‘m looking for SF Pro Reverb, MV w.push/pull, non UL schematics, bias filtering is similar to AA270 models, but the bias circuit with 2 filter caps is on a separate board. The rather rotten amp...
  17. Here‘s a link to a typical 80s style channel...

    Here‘s a link to a typical 80s style channel cascading mod for SF Fender amps, but you get only one „gainier“ channel....
  18. Replies
    29
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    1,386

    Hi Chris, could you fix it in the meantime, did...

    Hi Chris, could you fix it in the meantime, did you find the culprits? I just got a BA115 HP with similar problems and a blown tuner module. I could not check parts and voltages etc. up to now, but...
  19. Replies
    3
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    922

    Thanks a lot for ideas and suggestions, Kicks...

    Thanks a lot for ideas and suggestions, Kicks you're right, I want to use the circuit in a SE amp with one 6V6. Frequency range and swing is indeed a problem to be solved. Since I'm not experienced...
  20. Replies
    3
    Views
    922

    MOSFET Vibro Champ Vibrato

    Hi, I'm looking for a tubeless MOSFET schematic of the Vibro Champ vibrato. I found a circuit with LND150s on the web, but I'm not quite sure whether it will work that way ...
  21. Replies
    20
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    992

    I put some in different Fender SF Amps, they are...

    I put some in different Fender SF Amps, they are working fine and give a good pilot light, it's just plug'n' light.
  22. I installed crossline MVs on some 2205s for good...

    I installed crossline MVs on some 2205s for good results, sounding much better than the LarMar PPIMV to my ears. It's important to use a high quality pot (Bourns e.g.), 500K log gives a better...
  23. Replies
    8
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    729

    What Amp is it? It looks like a Sovtek Mig50,...

    What Amp is it? It looks like a Sovtek Mig50, which normally has a Mains switch for 110/220 VAC on top of the chassis. It's a good idea to check the correct mains voltage.
  24. Thread: ch switch

    by Zouto
    Replies
    49
    Views
    3,179

    Here you can find a similar solution...

    Here you can find a similar solution
    http://music-electronics-forum.com/attachments/2827d1217255959-footswitch.jpg
    Best greetings and good luck
    Zouto
  25. Thread: JJ GZ34 failures

    by Zouto
    Replies
    9
    Views
    945

    YES, they are junk, waste of money, time &...

    YES, they are junk, waste of money, time & nerves. Shuguangs and TADs also tend to blow occasionally, I found newer Sovteks to be reliable & stable.
    Zouto
  26. I used Xicons and WIMA MKPs in several vintage...

    I used Xicons and WIMA MKPs in several vintage Fenders for best results, also 2W metaloxide types as plate resistors, great sound, no crackling fireplace soundscape.
    Zouto
  27. Thread: The Vibro-Wreck

    by Zouto
    Replies
    16
    Views
    1,984

    Yeah, it's definitely true: no vipers no...

    Yeah, it's definitely true: no vipers no bite......as in Mob Barley's famous song.
  28. Replies
    2
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    848

    Thanks a lot, there are some differences in...

    Thanks a lot, there are some differences in design, fixed bias in RD45 vs. cathode bias in RD50 etc., but it helps. Double sided pcbs are are drag to trace. I'm still trying to get the right...
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