2. amps-preamps
  3. 1321838662

VAC Preamp: Is my Phono stage failing?

My VAC Standard LE preamp is exhibiting a loud, strange hum, heard in both speakers equally when MC Phono is selected. However, the hum doesn't show up until about 10 minutes of normal sounding LP playback. It gets louder with volume.

I think it may have to do with the unit getting to a certain temperature, since it starts the process over again if I turn everything off for 30 minutes – quiet for 10 minutes or so, then Wham! a loud hum that has me diving for the mute button!

If I switch the selector to any other setting, such as CD... dead silence. Could it be a phono tube going bad, and if so, how is it in both channels?

Any ideas (aside from calling Kevin, which I will do)?
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Showing 1 response by barrelchief

barrelchief
294 posts
 
Glad your problem has been solved.

Sorry to hi-jack your thread.

Maineiac & others.

Don't guess or assume that your homeowner's insurance will cover your gear, in the event of a catastrophe.

Many policies have limits on home electronics.

I have a rider that covers my electronics...audio, tv, computers, etc, with full replacement. Overall, the coverage is not terribly expensive.

It's worth reviewing with your agent.
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