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Topic: Blown fuse in Fender Twin Question |
Ken Metcalf
From:
San Antonio Texas USA
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Posted 18 Sep 2010 5:34 am |
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I was playing my Tele at a gig last night as a 3 piece band using 2 fender twins..
First set OK then after the break the light was out and fuse blown on one amp.
I will get a fuse and go out to where we are playing for a test.
The amps stay out there as it is a house band type gig.
The question is....
I am wondering what to look for as far as checking it out.
Could have been a volt spike or something...
The amps seem to be in good condition...
The fuse should a 2.5 amp slow blo..?? correct ??
The blown fuse says 250 V BUSS MDL 2
These are old blackface Twins
Thanks
_________________
MSA 12 String E9th/B6th Universal.
Little Walter PF-89.
Bunch of stomp boxes |
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Tony Prior
From:
Charlotte NC
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Posted 18 Sep 2010 7:30 am
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well, if the fuse is blowing with the STANDBY SWITCH OFF.. start here >>>
two caps / diode rectifiers.. When my 64 Tremolux was blowing fuses , it was the filter caps BEFORE the standby switch. I confirmed this by LIFTING the caps out of the circuit ...Same thing happened with my 64 Bandmaster and my friends 64 Tremolux... must be the year ! Nahh..bad caps is all...
_________________
Emmons L-II , Fender Telecasters, B-Benders , Eastman Mandolin ,
Pro Tools 12 on WIN 7 !
jobless- but not homeless- now retired 9 years
CURRENT MUSIC TRACKS AT > https://tprior2241.wixsite.com/website |
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Ken Metcalf
From:
San Antonio Texas USA
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Posted 18 Sep 2010 4:05 pm
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I put in a new fuse and it seems to be fine..
Cross your fingers..
Thanks Tony
_________________
MSA 12 String E9th/B6th Universal.
Little Walter PF-89.
Bunch of stomp boxes |
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Tony Prior
From:
Charlotte NC
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Posted 18 Sep 2010 11:55 pm
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| Ken Metcalf wrote: |
I put in a new fuse and it seems to be fine..
Cross your fingers..
Thanks Tony |
Kool Ken, but I think it may be YOU who has to cross your fingers !  Fuses blow , as you know, for a reason, that's why they are there. Is it possible that the fuse was bad ? sure...
Hope all works out for you...
T
_________________
Emmons L-II , Fender Telecasters, B-Benders , Eastman Mandolin ,
Pro Tools 12 on WIN 7 !
jobless- but not homeless- now retired 9 years
CURRENT MUSIC TRACKS AT > https://tprior2241.wixsite.com/website |
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Ken Fox
From:
Nashville GA USA
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Posted 19 Sep 2010 5:14 am
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| The MDL 2 was a 2.0 ampere fuse, too light for the amp. Hopefully that was the problem. Still could be the sign of something failing if the amp in starting to draw too much current (usually due to incorrect tube bias or power filtering caps with a high ESR (equivalent series resistance). The last one is tough to test without an ESR meter (I keep two in my shop). If you have watt meter (I use a digital plug in the wall model) you can observe the standby current, around 1 amp on a Twin. If it is a lot higher then trouble is lurking for sure. |
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Ken Metcalf
From:
San Antonio Texas USA
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Posted 19 Sep 2010 5:48 am
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Thanks you guys,
I replaced the fuse with a 2.5 and will probably do the wait and see thing...
One good thing about having 2 amps at a gig.
In a pinch I could get by with one Twin HA!
_________________
MSA 12 String E9th/B6th Universal.
Little Walter PF-89.
Bunch of stomp boxes |
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