Bare Knuckle Pickups Forum

Forum Ringside => Tech => Topic started by: TomW on July 23, 2007, 08:03:27 PM

Title: My Amp Has Died
Post by: TomW on July 23, 2007, 08:03:27 PM

I've just got my amp back from the shop where the tubes had been replaced. Turned it on and played it for a couple of minutes, then I started to hear some popping noises and the amp just died and now won't turn back on.
Does anyone know whats wrong with it?
Thanks

Title: My Amp Has Died
Post by: HTH AMPS on July 23, 2007, 08:41:39 PM

Sounds like a bad valve has taken out the HT fuse (yep, you can get bad valves right out the box).  Take the amp back to the shop and ask them to check it out.  

When I do bias/revalve jobs I leave the amp running for a few hours to see if the biasing drifts and bad valves will show up during this period.  Of course, buying from a reputable dealer in the first place means you get burned-in valves that are unlikely to drift much and will be tested on shorts etc.

 :twisted:

Title: My Amp Has Died
Post by: TomW on July 23, 2007, 08:47:13 PM

Ok thanks for the help, I'll take it back to the shop tomorow.

Title: My Amp Has Died
Post by: LazyNinja on July 23, 2007, 09:55:33 PM

out of interest, which shop did you take the amp to?

Title: My Amp Has Died
Post by: Woogie on July 23, 2007, 10:05:24 PM

My Laney did that once, turned it on and popped and died.

Valves are worth it for the tone though.

Picking up the JCM800 from the service tomorrow sweeeet.

Title: My Amp Has Died
Post by: TomW on July 24, 2007, 08:25:43 AM

Quote from: LazyNinja

out of interest, which shop did you take the amp to?

Deakins

Is there any way of telling which of the tubes are faulty and which fuse has blown?

Title: My Amp Has Died
Post by: Twinfan on July 24, 2007, 08:35:49 AM

Why bother checking?  You've just paid them for a service and it's not right.  Take it straight back for them to fix, and don't pay them any more money.

Title: My Amp Has Died
Post by: indysmith on July 24, 2007, 09:54:44 AM

Quote from: Twinfan

Why bother checking?  You've just paid them for a service and it's not right.  Take it straight back for them to fix, and don't pay them any more money.

There's a man that's got his affairs in order!