Fender Pro Tube Amp Completely Dead

macgonigle · 01-20-2007, 10:44 PM

I have a fairly new Fender Concert Reverb pro tube 50 watt amp. I was playing it today for about 1 1/2 hours and it went completely dead. I checked the fuses and both are OK. I tried plugging into another outlet and still no power at all. The pilot light doesn;t light up...nothing.
Any ideas?

Thanks

Rich...

Mark Black · 01-21-2007, 03:39 AM

Did you actually meter the fuses? Sometimes they can be bad but not look it.

The schematic shows a current inrush limiter - probably looks like a big version of a ceramic cap - I've seen those with broken leads or cracked solders at the PCB.

And how about checking continuity through the power switch? Sometimes they do go bad...

Rob Mercure · 01-21-2007, 02:10 PM

Did you check the speaker and it's connections?

Rob

Amp Kat · 01-21-2007, 02:17 PM

Agree with above and there might be some more fuses inside. Most common problem is bad output tubes. The Sovtek or EH/Fender labeled 6L6['s/5881 have given me grief in the past . A shorted tube can cause the fuse to keep blowing until you get it outta there.

macgonigle · 01-21-2007, 03:17 PM

Mark,
Thanks for your comments. I didn't actually meter the fuses. I'll do that and/or replace them and go from there. I'll also check the power switch.
Thanks....Rich

Enzo · 01-22-2007, 07:41 AM

That inrush limiter looks indeed like a large disc ceramic cap, except most of the ones I see look sort of dark and sandy. It is over by where all the AC wiring connects.

01-20-2007, 10:44 PM	#1
macgonigle Junior Member Join Date: Jan 2007 Location: Leeds, NY Posts: 2	Fender Pro Tube Amp Completely Dead I have a fairly new Fender Concert Reverb pro tube 50 watt amp. I was playing it today for about 1 1/2 hours and it went completely dead. I checked the fuses and both are OK. I tried plugging into another outlet and still no power at all. The pilot light doesn;t light up...nothing. Any ideas? Thanks Rich...

01-21-2007, 02:17 PM	#4
Amp Kat Senior Member Join Date: Jul 2006 Location: Baton Rouge,LA Posts: 1,062	Agree with above and there might be some more fuses inside. Most common problem is bad output tubes. The Sovtek or EH/Fender labeled 6L6['s/5881 have given me grief in the past . A shorted tube can cause the fuse to keep blowing until you get it outta there. __________________ KB

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01-21-2007, 03:39 AM	#2
Mark Black Senior Member Join Date: May 2006 Location: Near Seattle, WA, USA Posts: 341	Did you actually meter the fuses? Sometimes they can be bad but not look it. The schematic shows a current inrush limiter - probably looks like a big version of a ceramic cap - I've seen those with broken leads or cracked solders at the PCB. And how about checking continuity through the power switch? Sometimes they do go bad...

01-21-2007, 02:10 PM	#3
Rob Mercure Lifetime Member Join Date: May 2006 Location: Wise, Virginia Posts: 624	Did you check the speaker and it's connections? Rob

01-21-2007, 03:17 PM	#5
macgonigle Junior Member Join Date: Jan 2007 Location: Leeds, NY Posts: 2	Mark, Thanks for your comments. I didn't actually meter the fuses. I'll do that and/or replace them and go from there. I'll also check the power switch. Thanks....Rich

01-22-2007, 07:41 AM	#6
Enzo Senior Member Join Date: May 2006 Location: Lansing, Michigan, USA Posts: 10,366	That inrush limiter looks indeed like a large disc ceramic cap, except most of the ones I see look sort of dark and sandy. It is over by where all the AC wiring connects.

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