Allied hearts and spades power supply board help.



Hello all. I picked up this pin on ebay for a few bucks. It has a
problem. The F9 fuse blows as soon as you plug it in. I have narrowed
it down to this board

http://pg.photos.yahoo.com/ph/our_lan_boy/album?.dir=/7849scd

There are only 3 bridge rectifiers and a couple of caps on it. I would
appreciate any help on diagnosis.

Oh, I narrowed it down to this board by unplugging all of the
conectors except for the AC and the DC power supply connectors, and it
blows.

I am new to fixing these but am willing to learn. I am at least smart
enough to know I dont know what to do here!

Thanks for your help

Radbrad - Pinhead

.



Relevant Pages

  • Re: Laptop PSUs - bit OT - sorry
    ... Apparently they'd lent it to a friend and got it back minus the 13amp plug. ... Interestingly, although they'd tried a number of fuses, it was always the 'master' fuse that blew. ... As was common with such amplifiers, it was built with a common earth bus bar of 16 swg tinned copper wire, connected to the chassis at one point only, adjacent to the input sockets. ... What had puzzled me previously was why the mains sockets in the hall were still live after the siver paper fiasco. ...
    (uk.tech.broadcast)
  • Re: AC Power Cord for the UK
    ... It's a UK version DRRI so it's already setup with a AC Power Cord ... It looks kinda like the AC plug on a washing ... the plug end also has a small fuse built into the plug ... > that the fuse is held in place in the holder by 2 semi-circular pins. ...
    (alt.guitar.amps)
  • Re: Why does laptop PSU have an earth wire?
    ... You don't fit a 13 amp fuse in every plug either. ... they offer a modicum of protection for the equipment. ...
    (uk.comp.misc)
  • Re: AC Power Cord for the UK
    ... It's a UK version DRRI so it's already setup with a AC Power Cord ... It looks kinda like the AC plug on a washing ... the plug end also has a small fuse built into the plug ... The UK plug you describe is our standard mains plug, ...
    (alt.guitar.amps)
  • Re: AC Power Cord for the UK
    ... It's a UK version DRRI so it's already setup with a AC Power Cord ... It looks kinda like the AC plug on a washing ... the plug end also has a small fuse built into the plug ... > that the fuse is held in place in the holder by 2 semi-circular pins. ...
    (alt.guitar.amps)

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