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  1. SilkWilk

    NFB taps, impedance mismatch - am I doing it wrong?

    I stumbled on an old post regarding power tubes getting hot recently and it got me wondering. (backstory) I was having a no sound issue with my amp (1969 Rockitt Retro super lead clone) a few months ago and figured out it was a bad ground connection on the impedence selector. At the same time...
  2. SilkWilk

    Kramer Baretta clone sounds honky/cocked wah almost

    Thanks man appreciate the response. I’ll do some research and see if I can’t find a better complimented pickup. Do you think a 250k pot would make a difference for better or worse? I had a different custom custom in a alder bodied strat when I first started out and loved it. I should throw...
  3. SilkWilk

    Kramer Baretta clone sounds honky/cocked wah almost

    I'm probably opening a can of worms here but I feel like I've racked my brain and tried enough experiments at this point to finally put this out there to masses and get others opinions. A few years ago I built a 84/85 Kramer Baretta clone. I got an all maple body from Chris Locke (heavy as...
  4. SilkWilk

    Super Lead fat cap mod question.

    Like this
  5. SilkWilk

    Super Lead fat cap mod question.

    Awesome and I don’t want to be using this I know this is texhnically only 33uf but what is the difference here) Because I currently have a .68uf 500v sozo bypassing the 820 I guess I was thinking I could find a 330uf sozo and was confused as I could only find 33uf
  6. SilkWilk

    Super Lead fat cap mod question.

    Thank you both - Jon I’m I’m referring to the bypass cap on V2A normally it’s a .68uf over the 820ohm resistor. I didn’t think a 33uf is what I want but it’s all I could find in coupling capacitors. But I am finding these electrolytic caps (below)in the right values and just wanted to make...
  7. SilkWilk

    Super Lead fat cap mod question.

    I know this is probably a stupid question and I’m reluctant to ask in all honesty but here goes: The common EVH v2A fat cap mod replaces the stock .68uf cap with a 330 or 250uf. I’m considering playing around with this but I can’t find any coupling caps like the .68 that are 330/250. My amp...
  8. SilkWilk

    100 watt super lead lost sound

    It’s funny how everything worked out. I got the amp back in action and the same day I got an email back from a guy that is well known in my area for amp repair but recently retired. He actually got back to me and said he’s still doing side jobs - so I think im going to get it over to him to...
  9. SilkWilk

    100 watt super lead lost sound

    Just when you think about throwing in the towel things seem to work out. I decided to replace the socket and burnt bias feed resistor. In doing so I unscrewed the impedance selector switch to clear some room and get at V6 and the main ground wire from the selector switch to the output Jack all...
  10. SilkWilk

    100 watt super lead lost sound

    here are shots of the board the first pic shows the burnt feed resistor note the black char on the side - the 2nd pic is the carbon tracing around 5&6 and then a full board view
  11. SilkWilk

    100 watt super lead lost sound

    Yeah heater voltage is good - I was in stand by when I took those readings so that would explain the strange readings. My meter should be ok it hasn’t failed me before but I agree you never can be to sure. I’ll look into it. I know I’m making assumptions and I probably haven’t tested...
  12. SilkWilk

    100 watt super lead lost sound

    Cool I will get the parts replaced asap
  13. SilkWilk

    100 watt super lead lost sound

    After reading my post I just realized I prob need to take it off standby lol for correct measurements - correct?
  14. SilkWilk

    100 watt super lead lost sound

    I was able to get a reading on the impedance selector and output jacks. From B+ CT to all impedence taps I’m getting 3.80 k ohms. This also the measurement on the jacks. I measured voltage with tubes out amp warmed on standby I’m getting the following: Pin 5 all tubes = -45 vdc Pin 3 v4 =...
  15. SilkWilk

    100 watt super lead lost sound

    I can post pics here in a bit
  16. SilkWilk

    100 watt super lead lost sound

    Thanks man - yes I have a new socket and bias feed resistor coming should be here Monday. I haven’t ordered a cap as was waiting to hear your guys thoughts. Something that was mentioned was the resistance of my meter/leads I’ll have to recheck those. I’m almost considering if my HT fuse...
  17. SilkWilk

    100 watt super lead lost sound

    Also I wondered - this amp has a zero loss effects loop could I try sending the preamp out to another amp to test for signal there - could I plug into return of power amp to check for sound? Just trying to see if I can figure out what side I’m losing signal on.
  18. SilkWilk

    100 watt super lead lost sound

    Good info thanks - I checked the impedance selector 4,8,16 taps are all at or around .5 to ground - is there a different way to check impedance selector? What’s the best way to confirm if an input Jack is bad?


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