Clint Sharp wrote:
In message , "Mungo \"Two
Sheds\" Toadfoot" writes
...and others wot know about Roland keyboards/power supply boards
again. Here's some piccies... http://photobucket.com/gytha_ogg

Anything there identifiable as a potential reset-causer?

Si


Yes. In project3.jpg I'd suspect the leftmost brown capacitor inside
the aluminium heatsink but if I suspected on I'd change them all.
They're cheap enough that I'd consider the time taken to remove and
test them all more expensive than the cost of the parts. Basically,
that heatsink is an oven for cooking capacitors.

In project2.jpg the heat-shrink covered part to the left of the
obvious capacitor is also likely to be an electrolytic capacitor as
well but check the board designation.

In project9.jpg be very wary of everything to the left of the yellow
covered transformer, that's the non isolated side and it will bite you
if there's charge left or it's plugged in.

Thanks, Clint. I'll see about making another list of capacitors and then
find out what Maplins has to offer. There used to be a good components shop
in Ramsgate but he went yonks ago. As I recall it was the big 'uns that I
had trouble finding.


I take it from your e-mail address that you're not in the north-west?

Heh. About as far from the North-East as you can get without drowning.

Thanks again for your help.

Si