deluxe reverb reissue fuse keeps blowing

dankomal · April 3rd, 2008, 08:10 AM

my deluxe reverb reissue fuse keeps blowing every time I switch to standby just before switching off. the correct fuse to use is f1a 250 volt, and i've just discovered the fuses i've been using are f1,6L 250 volts.
is this the problem or is something else causing the fuses to blow?
needless to say i'm going to get the correct fuses asap!

Wally · April 3rd, 2008, 01:50 PM

By all means get the properly rated fuse. I don't bother with turning the amp to STandby before shutting down. I simply put both switches in the 'off' position simultaneously. That said, you should be able to switch to STandby anytime you please. You could have a bad standby switch that is arcing.

dankomal · April 3rd, 2008, 02:11 PM

cheers, i've now got the correct fuse in, it still blew, I took out the power tubes and the rectifier tube, then replaced the fuse and the amp lit up.
I then put the "rectifier tube only" back in, powered up and the fuse blew!
i'm waiting on another 5ar4 before I can try to solve the problem,
any more ideas if a new 5ar4 don't fix it????

Wally · April 3rd, 2008, 02:39 PM

Did the fuse blow with the stand by in the 'stand by' position or when you switched to 'play' position?

dankomal · April 3rd, 2008, 03:54 PM

I first noticed it in standby but am not so sure now because it started doing it as soon as I switch on.

papejazzer · April 3rd, 2008, 11:36 PM

Are You using a slo-blow fuse?

jhundt · April 4th, 2008, 01:28 AM

there is a simple device you can assemble in a few minutes at a cost of a dollar or two that can help you troubleshoot your amp. check this thread:

http://www.tdpri.com/forum/amp-centr...urrent+limiter

look at the links posted in there for diagrams how the limiter is assembled.

JohnS · April 4th, 2008, 09:30 AM

I had the same problem a few years back.. It turned out the rectifier tube went bad. You did the correct troubleshooting proceedure to find it.

TwinandTwang · April 4th, 2008, 09:33 AM

replace the rectifier tube. I had an amp that did the same thing last year and that solved it

dankomal · April 5th, 2008, 07:35 AM

just replaced the rectifier tube, the old one must have been the culprit.
now its working correctly again, thanks guys...

JohnS · April 5th, 2008, 09:49 AM

Cool. Glad to hear it. That problem drove me crazy when it happened to me.

April 3rd, 2008, 08:10 AM	#1 (permalink)
dankomal TDPRI Member Join Date: Jul 2007 Location: manchester Age: 39 Posts: 43	deluxe reverb reissue fuse keeps blowing my deluxe reverb reissue fuse keeps blowing every time I switch to standby just before switching off. the correct fuse to use is f1a 250 volt, and i've just discovered the fuses i've been using are f1,6L 250 volts. is this the problem or is something else causing the fuses to blow? needless to say i'm going to get the correct fuses asap!

April 3rd, 2008, 11:36 PM	#6 (permalink)
papejazzer Tele-Meister Join Date: Jul 2004 Posts: 120	Are You using a slo-blow fuse? __________________ Can You Play Freebird On That?

April 3rd, 2008, 01:50 PM	#2 (permalink)
Wally Friend of Leo's Join Date: Mar 2003 Location: Lubbock, TX Posts: 4,225	By all means get the properly rated fuse. I don't bother with turning the amp to STandby before shutting down. I simply put both switches in the 'off' position simultaneously. That said, you should be able to switch to STandby anytime you please. You could have a bad standby switch that is arcing.

April 3rd, 2008, 02:11 PM	#3 (permalink)
dankomal TDPRI Member Join Date: Jul 2007 Location: manchester Age: 39 Posts: 43	cheers, i've now got the correct fuse in, it still blew, I took out the power tubes and the rectifier tube, then replaced the fuse and the amp lit up. I then put the "rectifier tube only" back in, powered up and the fuse blew! i'm waiting on another 5ar4 before I can try to solve the problem, any more ideas if a new 5ar4 don't fix it????

April 3rd, 2008, 02:39 PM	#4 (permalink)
Wally Friend of Leo's Join Date: Mar 2003 Location: Lubbock, TX Posts: 4,225	Did the fuse blow with the stand by in the 'stand by' position or when you switched to 'play' position?

April 3rd, 2008, 03:54 PM	#5 (permalink)
dankomal TDPRI Member Join Date: Jul 2007 Location: manchester Age: 39 Posts: 43	I first noticed it in standby but am not so sure now because it started doing it as soon as I switch on.

April 4th, 2008, 01:28 AM	#7 (permalink)
jhundt Friend of Leo's Join Date: Mar 2003 Location: Netherlands Age: 54 Posts: 3,131 9 Photos	there is a simple device you can assemble in a few minutes at a cost of a dollar or two that can help you troubleshoot your amp. check this thread: http://www.tdpri.com/forum/amp-centr...urrent+limiter look at the links posted in there for diagrams how the limiter is assembled.

April 4th, 2008, 09:30 AM	#8 (permalink)
JohnS Tele-Meister Join Date: Mar 2003 Location: San Jose, CA Age: 59 Posts: 312 12 Photos	I had the same problem a few years back.. It turned out the rectifier tube went bad. You did the correct troubleshooting proceedure to find it.

April 4th, 2008, 09:33 AM	#9 (permalink)
TwinandTwang NEW MEMBER! Join Date: Feb 2008 Location: Annandale,Va Posts: 6	replace the rectifier tube. I had an amp that did the same thing last year and that solved it

April 5th, 2008, 07:35 AM	#10 (permalink)
dankomal TDPRI Member Join Date: Jul 2007 Location: manchester Age: 39 Posts: 43	just replaced the rectifier tube, the old one must have been the culprit. now its working correctly again, thanks guys...

April 5th, 2008, 09:49 AM	#11 (permalink)
JohnS Tele-Meister Join Date: Mar 2003 Location: San Jose, CA Age: 59 Posts: 312 12 Photos	Cool. Glad to hear it. That problem drove me crazy when it happened to me.