Psst... Ready to join TalkBass and start posting, make new friends, sell your gear, and more?  Register your free account in 30 seconds.

swr combo broken help please!?!?!?

Discussion in 'Amps and Cabs [BG]' started by Prfsr Ltd Swr, Jun 30, 2004.


  1. Prfsr Ltd Swr

    Prfsr Ltd Swr

    Jun 30, 2004
    okay i have a SWR 15 inch workingmans combo, it is an 8 ohm combo and a 4 ohm cabinet was connected to it, i was told that this brought the combo down to 2.6 ohms and it could not take it and something blew, does anybody know for sure what it is? is it possible for you to know or would u need to take a look at it, i can show you pictures of the inside if that is necessary, thanks for the help i appreciate it a ton

    zach
     
  2. Finger Blister

    Finger Blister

    Jul 8, 2003
    What does it not do?

    No power whatsoever usually means a blown internal fuse.

    You have to describe what it's not doing it detail for a diagnosis.
     
  3. Prfsr Ltd Swr

    Prfsr Ltd Swr

    Jun 30, 2004
    sorry, its not giving out any power at all, if that helps, also i opened it up and there is an internal fuse, but it doesnt look like it comes out, the external fuse is not blown
     
  4. Finger Blister

    Finger Blister

    Jul 8, 2003
    Classic symptom of a blown internal fuse.

    It's a 'Rat Tail' fuse that is soldiered on either end.

    If that's your problem you can easily test it with a quick bridge-over to see if that fires her up.

    Happened to me and my SWR once.

    You can either get a replacement 'Rat Tail' type fuse
    (look on the old fuse for ratings) and soldier it up...

    or you can do what I did and soldier in a capsule fuse holder
    so if it ever blows again it's easy to replace.
     
  5. Prfsr Ltd Swr

    Prfsr Ltd Swr

    Jun 30, 2004
    hmm a little confused

    "If that's your problem you can easily test it with a quick bridge-over to see if that fires her up."

    im not quit to sure what that means, im not tha great with amps and what not but maybe when i open it up ill have a better idea, hopefully i can fix it myself, how would i get the old one out and put the new one in, im a little confused thanks for the help

    zach
     
  6. Prfsr Ltd Swr

    Prfsr Ltd Swr

    Jun 30, 2004
    any one know where i can get a "rat tail" fuse thanks
     
  7. Finger Blister

    Finger Blister

    Jul 8, 2003
    Sorry, my bad.

    They are called Pigtail Fuses which have axial leads at either end:

    [​IMG]

    I checked with Radio Shack once, and they told me it was a special order item.

    You should be able to order one from Fender.
    Fender/SWR Customer Service: (480) 596-9690


    Or get Pigtail Clips which 'converts' normal fuses into pigtails:

    [​IMG]

    I got a spare pigtail fuse from SWR Sound some years ago.
    Toasted it upon installation, because it's in a tight spot.
    I just converted over to the $2.95 inline fuse holder for regular fuses (Radio Shack) and everythings been fine for the past 2 years. Now I keep a spare fuse in my gig tool bag
    just in case and I can replace it 'in-the-field':

    [​IMG]


    Whatever type of replacement method:
    Make absolutely sure you have exactly the same rated fuse.
     
  8. Prfsr Ltd Swr

    Prfsr Ltd Swr

    Jun 30, 2004
    okay thanks for all the help, sorry i was gone all weekend and havnt got a chance to check this

    "I just converted over to the $2.95 inline fuse holder for regular fuses (Radio Shack) "

    so i go to radio shack and buy a inline fuse holder? and what do u mean regular fuses

    also

    "Make absolutely sure you have exactly the same rated fuse."

    how do i check this ??

    if i just buy a pigtail fuse do i just clip the old one out and solder the new one in

    thanks for the help hopefully i can get this fixed
     
  9. Finger Blister

    Finger Blister

    Jul 8, 2003
    Yes, go to radio shack and buy a fuse holder.

    The exact same fuse is available without the 'Pigtails'


    Bring in your old pigtail fuse and and tell 'em
    you want a new fuse just like the one you have


     
  10. Prfsr Ltd Swr

    Prfsr Ltd Swr

    Jun 30, 2004
    haha yes i dont have a lot of expierience in tis kind of thing and i wpuld rather have a professional do it for 25 or less lolthanks for hte help

    also i talked to someone at a shop and they said is cost about 20 just to repace the fuse, but connecting the wrong ohm cabinet to it would over heat it amd bow the fuse but also other components