2. amps-preamps
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VAC Phi 300.1 won't power on.

Upon plugging in my VAC Phi 300.1 power amplifier I heard a soft pop and then it went completely dead.  This was after I had removed and cleaned each of the  8 output tubes.  I've contacted VAC but as it's the start of the weekend I wonder if any VAC users have encountered a similar situation.  I live in Alaska so sending it back is a massive ordeal.  

jensmunk
jensmunk OP
20 posts
 

One thread I read mentioned the "Sentry Circuit" which shuts down the amp if a tube goes bad to avoid damaging the amp.  Is anyone familiar with this circuit, and how to reset it? 

waltersalas's avatar
waltersalas
952 posts
 

Agree with pdreher. Check the fuse.

jasonbourne71's avatar
jasonbourne71
1,215 posts
 

Take a look inside the amp. A soft "pop" could be a shorted coupling cap. Look for a cap with white stuff coming out one end.

jasonbourne71's avatar
jasonbourne71
1,215 posts
 

Don't stick your fingers in there! Use a wood skewer to poke around with!

rcprince
3,074 posts
 

Happened to me with my Phi 200 once.  Check the fuse in the back of the amplifier.

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