[sdiy] yamaha spx-90 blown p/s caps

Roy J. Tellason rtellason at verizon.net
Wed Oct 8 18:33:22 CEST 2008


On Wednesday 08 October 2008 12:26, Nate Reeves wrote:
> is the rectifier the coil inductor looking box?

Since I'm not looking at one I couldn't say.

> looks like the spx90 and spx90 II have the the same power supply units
> so i have spare parts!

Do they?  I could look at manuals for both but they're not here.  And it's 
been a really long time since I've seen either one of these.

> sweet!
>
> i am taking voltage readings off the board....

(Snip)

> > On Wednesday 08 October 2008 10:10, Nate Reeves wrote:
> >> hey all, does anyone have the schematics for the above unit?
> >>
> >> i am sure i can call yamaha and buy it but i rather save $$$ if
> >> possible...
> >
> > http://mysite.verizon.net/rtellason/manuals.html    :-)

I have the manuals,  if you need 'em.

> >> i plugged this thing in and it took about 5 secs for a electrolytic
> >> cap to smoke on the p/s board....
> >>
> >> should i replace all caps on the p/s board or just the smoking gun?
> >> B^p
> >
> > Find out why it smoked.  You're probably looking at a shorted
> > rectifier, maybe?

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