Peavey Classic 50/410

[emswiler]

I probably know the answer to this question is "send it to a tech," but I have a dry 410.
That is...I turned the amp on yesterday and it turned on (about 5 year old 410/Peavey Classic 50) for a minute or two before everything shut down.

It occurred during a sound check and I did not "hear" anything suspicious because I did not have the four speakers connected. I typically disconnect them for this gig and go from the output to a separate 212 cabinet. Otherwise, of something screwy happened "inside" the unit, I would have heard it.

Whatever.

I opened the back and found nothing amiss during a very general inspection. None of fuses (one main fuse, three inside) seemed bad. One of the AX7 tubes was not completely seated correctly, strangely, but after re-seating it, it still had no power whatsoever.

I contacted James Audio in Fort Worth and I'm preparing to send it, but before removing the amp from the cabinet to send, I thought I'd post a threat in case anyone cares to consider it.

Thanks... Again, completely dead amp with one year old tubes, too, I might add.

DE

[Enzo]

Never never never play a tube amp with no speaker attached. By sound check I assume you were playing something into it???

I would first check the fuses inside - you may be lucky and have a blown one. But fuses usually blow for a reason. Remove each fuse from its holder and measure it with a meter, you can't always tell by looking.

[emswiler]

Yowza...after all these years tooo...

I never thought I'd screw up this badly. But yes, Enzo, I was briefly trying to play through the amp. It lasted no more than two or so minutes before the amp shut down (the lamp went out and I started checking my strip and the wall, etc.)...

I normally have either the normal set of four speakers inside the 410 hooked up OR I more regularly bypass the 410 speakers and have another cabinet hooked up.

I tell you, this is embarassing. I've been playing a long time and did not know that this could damage the amp. Some things are better left un-said, but I just did not know.

I've passed on to my tech what you said and am awaiting a reply. THe fuses look OK; I found four in addition to the main accessible fuse.

Thanks Enzo...

[Amp Kat]

Not trying to be negative but if your fuses are good and the pilot light is off is not a good sign at all. You are checking those fuses with a meter right ?

[emswiler]

OK, I still have hope...

....I checked fuses with meter last night, finally, and the main fuse (the one accessible from the back) was blown...

I know I was -- and still may be -- looking at a new Peavey transformer if I fried the thing...but I really believe -- not trying to be over positive -- that the fuse did its job...

I just picked up a pack of 3A fuses and will be home in a bit to check out the amp...

Hopefully I'm OK...if not, I'm sending it to the tech who already knows what a stupid thing I did...

---Didn't realize it the other night as we were getting a sound check started -- but did not have the speakers hooked up to the amp (410) -- and it only took a moment but the thing shut down completely --

Why? someone may ask, were the speakers not hooked up -- and that answer, not that I assume you don't have anything better to do -- but was because I normally use a 212 cab with this amp and extend a speaker cable from the appropriate 16 ohm output --- that was not necessary at this deal and lo and behold, I forgot to re-connect the cabinet's 4-10" speakers...DANG IT...

Thanks for the reply...I'll post a notice as to how the amp is doing in the unlikely event it matters to anyone...

DE

[Amp Kat]

Well now that you know , it's a lesson you'll be hopefully happy with that it wasn't the hard way. Fwiw when the volume is cranked or very long periods without a load is when you blow them. Your chances are much better if the volume was minimal. Just glad that fuse was blown !

[emswiler]

Yea, but there is some snap, crackle and popping...

...Thanks...I'm happy it's apparently not as serious as it could have been...But when I cranked it up with the new fuse, then took it off of standby, I did in fact "smell" a little something, one of the four larger tubes seemed a tad hotter than the others, and additionally there was noise that didn't belong.

I simply shut her down without cussing too much and I'm packing her up nice to send to Fort Worth... James Audio...

BTW, he's worth checking out for mods and such...the guy is one of the best in Texas, anyway...

My volume was way down at below three I believe, and it shut down on me the day I screwed up...I am really, really hoping none of this noise means I need a transformer....

thanks...!