Back of amp fireworks! Ooooo...Ahhhhhhh.....

charlie chitlin · May 3rd, 2005, 07:39 PM

My '56 Deluxe stopped all noise except a sort of crackle that coincided with some blue sparks that were flying around the inside of the 5Y3GT output tube.
Does this sound like something just putting in a new tube could fix? Or is this more of a symptom than a problem? I wouldn't like to cook an NOS tube by putting it where there's a problem.

Smokey · May 3rd, 2005, 07:44 PM

That's a rectifier tube, so hopefully there's not a power supply problem(caps). Put a cheapy in there and see if that works.

Wally · May 3rd, 2005, 07:47 PM

Has the amp been recapped? If not, I would suggest that any service start with that aspect. Many a good amp has gone down to old, weak caps giving it up with catastrophic results. If the amp has been maintained properly and the caps are good and fresh, throw another 5Y3 in there. If it doesn't go snap crackle and pop, start measuring voltages and assessing sonics, etc.

charlie chitlin · May 7th, 2005, 10:14 PM

Actually....this amp was given a good once-over (and a new transformer) by Caesar about 20 years ago, and I haven't done a thing except play it ever since.
Maybe time for a service, eh?
Can someone who is handy with a soldering iron put new caps in?
Or is this a job for the pros?
Thanksfor your help!

charlie chitlin · May 8th, 2005, 12:32 PM

Update:
New tube. Everything glows and gets warm, but no sound at all.
Off to the shop, I guess........

May 3rd, 2005, 07:39 PM	#1 (permalink)
charlie chitlin Friend of Leo's Join Date: Mar 2003 Location: Bucktown, Pa Age: 47 Posts: 2,595	Back of amp fireworks! Ooooo...Ahhhhhhh..... My '56 Deluxe stopped all noise except a sort of crackle that coincided with some blue sparks that were flying around the inside of the 5Y3GT output tube. Does this sound like something just putting in a new tube could fix? Or is this more of a symptom than a problem? I wouldn't like to cook an NOS tube by putting it where there's a problem. __________________ Dig yo'self http://profile.myspace.com/index.cfm...6-bf3537901a07

May 3rd, 2005, 07:44 PM	#2 (permalink)
Smokey TDPRI Member Join Date: Mar 2003 Posts: 78	That's a rectifier tube, so hopefully there's not a power supply problem(caps). Put a cheapy in there and see if that works. __________________ Smokey's Forums

May 3rd, 2005, 07:47 PM	#3 (permalink)
Wally Friend of Leo's Join Date: Mar 2003 Location: Lubbock, TX Posts: 4,212	The usual question.... Has the amp been recapped? If not, I would suggest that any service start with that aspect. Many a good amp has gone down to old, weak caps giving it up with catastrophic results. If the amp has been maintained properly and the caps are good and fresh, throw another 5Y3 in there. If it doesn't go snap crackle and pop, start measuring voltages and assessing sonics, etc.

May 7th, 2005, 10:14 PM	#4 (permalink)
charlie chitlin Friend of Leo's Join Date: Mar 2003 Location: Bucktown, Pa Age: 47 Posts: 2,595	Actually....this amp was given a good once-over (and a new transformer) by Caesar about 20 years ago, and I haven't done a thing except play it ever since. Maybe time for a service, eh? Can someone who is handy with a soldering iron put new caps in? Or is this a job for the pros? Thanksfor your help! __________________ Dig yo'self http://profile.myspace.com/index.cfm...6-bf3537901a07

May 8th, 2005, 12:32 PM	#5 (permalink)
charlie chitlin Friend of Leo's Join Date: Mar 2003 Location: Bucktown, Pa Age: 47 Posts: 2,595	Update: New tube. Everything glows and gets warm, but no sound at all. Off to the shop, I guess........ __________________ Dig yo'self http://profile.myspace.com/index.cfm...6-bf3537901a07