PS Audio 4.6 Phono Stage Gone Bad

[Winslow S.]

Hi all,

This is my first post. I've owned my PS Audio 4.6 pre amp since the late 80s. Aside from some scratchy pots over the years it's been trouble-free (no cap job or any other interventions) and of course the phono stage sounds great. Til now, that is.

Today I noticed some hash/distortion on the left channel. The ol' scientific revealed that the left phono input is compromised. This is true for Straightwire, High Gain, or Mono modes. Short of full cap job, any suggestions on where to start just to get it up and running? Other inputs are fine. Thanks! Happy Thanksgiving! - Winslow

 

[Gigantic]

It's coming up on 35-40 years old, it's probably due for a full cap job. Electrolytics don't last that long. a cap replacement will be much cheaper than a new amp.

 

[pauldrewry]

Have you tried contacting PS Audio?

 

[RickB]

Have you tried contacting PS Audio?

It has been written in the past, and Paul himself has said this, that there are no reference materials left from that stage of PSAudio's existence...I have one of these preamps, too...

 

[Winslow S.]

Have you tried contacting PS Audio?

Yes. Paul recommended recapping the power supply.