[Christopher S]

Hi folks,

My Adcom preamp has developed an intermittent fault, and any guidance on how to fix it would be appreciated. Can't really afford a new preamp/tuner.

Basically, a high pitch tone is produced through the speakers (old school Heybrook HB1's....nice). The high pitch tone does not vary with an change in volume. I can make the sound come and go by pressing and releasing any of the buttons on the pre amp. Tone in/out for example. Even jiggling the headphone jack plug will do it. The sound does come back by itself though and the only way to make it stop is fiddling with a button of the preamp. Any idea what is going on?

Thanks audio gurus!
Chris