• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

pat 4

  1. Refugee

    Dynaco Pat 4 preamp hum - Replace multi-cap

    Quick project: My Dynaco Pat-4 preamp started humming. I decided to change out the main filter cap in the power supply. I did not want to spend much time/money on this so I did not obsess on the purchase of a multi-cap that matched well as I usually do. I also did not use a terminal strip for...
    • Refugee
    • Thread
    • dynaco dynaco pat-4 multi-cap replacement pat 4 repair
    • Replies: 1
    • Forum: Solid State
  2. S

    Dynaco Pat 4 hum troubleshooting

    Hi All, So I've got a Pat-4 that started to hum recently. I've had it for decades, and this just started happening. A few observations: - The hum is NOT dependent on the pre-amp volume channel, balance treble, hi filter, mono/stereo, or the loudness. - The hum gets worse when turning up the...
Back
Top Bottom