How do you check for shorts ? Obviously you should check for shorts
between any of the transistor's legs that exists in the Powersupply
section, particulary the 4 ones that are attached to the bck of the
metal case, using a multimeter.
--- In PolySix@yahoogroups.com, "hoggy_bogger" <yanbu@c...> wrote:
> > I'd check the Powersupply board for shorts - I can't remember but
I
> > think there should be a few transistors at the area - check them
out
> > for shorts.
>
> I disconnected all the power to the other boards, and just had power
> to the KLM-376, powered on and it blew the fuses (both 250v 1a on
the
> board). Obviously there is a short somewhere in that board? The
D1
> diode lights up for a sec when it's powered on, then dims out.
>
> Can't seem to find any shorts in there, any idears? I have a few
> photos here of the board, maybe there's something obvious to you
guys
> (other than the fuses not being in there, took em out)
>
> http://www.10eastern.com/images/polysix/poly1.jpg
> http://www.10eastern.com/images/polysix/poly2.jpg
> http://www.10eastern.com/images/polysix/poly3.jpg
> http://www.10eastern.com/images/polysix/poly4.jpg
> http://www.10eastern.com/images/polysix/poly5.jpg
>
>
>
>
>
>
>
> > --- In PolySix@yahoogroups.com, "hoggy_bogger" <yanbu@c...> wrote:
> > > I'm really hoping I can get some help / advice from you all.
Ok,
> > > i'll state the facts once again:
> > >
> > > My polysix fell out of tune last week, a few days before I was
> > about
> > > to play a show, and I decided to get in there and tune it. I
got
> > it
> > > rock solid in tune, and this is obviously where I went wrong -
I
> > had
> > > it plugged in still - and closed the cover down to put all the
> > > screws in and saw a small flash from the center back portion of
the
> > > inside. It seemed like it came from the center back board
that's
> > > screwed in with the metal plate, the one that holds the fuses.
The
> > > first of the two fuses blew out. I looked around for quite
some
> > time
> > > to see if I pinched any wires against the case or something
> > obvious,
> > > but couldn't find anything. I bought new fuses and replaced,
but
> > > they blow out immediately when powered up.
> > >
> > > I'm pretty handy with a soldering iron and such, can plunder my
way
> > > through schematics - but not sure where to start and thought I
> > better
> > > ask some advice. Thanks in advance for any help. The most I
can
> > > offer this board is my patch dumps, I have a number that aren't
in
> > > your files area.