Recent content by CrazyIvan

  1. C

    How to determine where hum is coming from

    Well well well, the hum went away with no rca input connected, I use a schiit valhalla 2 as a preamp (for volume control) and an Audiocontrol C101. With C101 plugged in it hums! run just the Schiit. NO hum. Thanks to everyone for helping diagnose this issue.
  2. C

    How to determine where hum is coming from

    Yes , you are correct. jumpers have tubing installed.
  3. C

    How to determine where hum is coming from

    sorry , original 2 prong plug.
  4. C

    How to determine where hum is coming from

    I never removed the copper input plate. I will unbolt it to see if it has fiber washers. If it came that way from the factory I'd assume they are there,
  5. C

    How to determine where hum is coming from

    Video of the hum
  6. C

    How to determine where hum is coming from

  7. C

    How to determine where hum is coming from

    PL 400 white oak cap kit, pl14 board, light upgrade, new output transistors, WA dc protection running quasi comp. Upon power up, there is a hum through the speakers that changes tone and then lowers. Where should I begin trying to eliminate this? Isolate the transformer from the chassis? I have...
  8. C

    Insulating WOPL 400 transformer bolts

    Will you be selling a kit?
  9. C

    Output transistor question

    I had to put a new belt and bulbs in the GA 212, but it works great now.
  10. C

    Output transistor question

    should I get new ones? or is that not beneficial if they are working.
  11. C

    Output transistor question

  12. C

    Output transistor question

    Is there any reason to replace the remaining 2 SJ2741's ? it definitely has a crisper sound now.
  13. C

    Output transistor question

    They are in :)
  14. C

    Output transistor question

    I see that now, thanks.
  15. C

    Output transistor question

    (PL 400 quasi comp) I am replacing the old phase linear XPL909 transistors with new Onsemi MJ21196G transistors I bought from whiteoak. I have the installation list as to where to put what transistors. My question is half of my XPL909's are right side up with the printing on the transistors and...
See more
Top