Pass Aleph P problem

Status
Not open for further replies.
Good evening guys, my name is Matteo and I'm a new member looking for help, my pre pass Aleph p started to give a strange problem .. while the channel set knob is positioned on channel 1, the channel light remains on 2.and so far no problem since it still reproduces well. The problem arises if I select channel 2, it makes a mechanical noise that I can't describe but comes from inside the case ..
I read somewhere that Mr. Pass answers on a forum, could you tell me what it is?
Thank you very much 👨*🔧
 
yes, it is the model with remote control, I didn't tell you that the pre has another problem, this time with the volume ... when I rotate the volume knob, there are two points where the signal goes away from the right channel, then I rotate again of a point and everything is in place.
thank you very much
 
Sounds like a relay without enough drive voltage/current to pull in the contacts which is what the chattering is about. Could be the power supply or worse, the drive circuit.
A bad capacitor in power supply would cause AC to pass to the relay which makes them chatter as well
 
Last edited:

Attachments

  • 20190524_231057.jpg
    20190524_231057.jpg
    309.7 KB · Views: 119
  • 20190524_231132.jpg
    20190524_231132.jpg
    572.3 KB · Views: 117
  • 20190524_231104.jpg
    20190524_231104.jpg
    531.6 KB · Views: 124
  • 20190524_231153.jpg
    20190524_231153.jpg
    692.1 KB · Views: 122
Status
Not open for further replies.