Vintage Synth Repair

The first thing you should do is disconnect the power supply from the
rest of the circuits, and see if it still blows the fuse, if it
doesn't blow the fuse, then you have a short somewhere else.
If it is the power supply, then try these tests.
Disconnect the transformer from the power supply, and check it for
shorts, if it is ok, then check the diodes for shorts. 
If everything checks out, then I would replace all the electrolytic
capacitors, I would also replace the positive and negative voltage
regulators (their cheap)
If your not sure about a part's condition, just replace it.
let us know how you make out

Dave
www.dragonslair.ca



--- In vintagesynthrepair@yahoogroups.com, "vcficus"
<mking235724MI@...> wrote:
>
> Out of the blue (my P600 is getting iffy too, must be the weather)my
> beloved  Yamaha CS60 is blowing the 1.5 amp fuse on the power supply.
> It lights the power switch and then blows it on power up.
> 
> There are two other small 0.5 amp ones, those are fine.
> 
> Help! Help!