Orijinal gönderinin sahibi: Michael Goolsby

Metin:

It sounds like you had this unit for a while.  If you hit the control knob or applied pressure many times, most likely you broken the solder joints.

If you mechanically incline, open it up and look where the knob connects to the board. If you see the solder joints move any when you apply pressure to the knob, then you can try soldering it yourself.  Home Depot or Lowes has a cheap small soldering iron.

Otherwise toss it and replace it

Durum:

open