[sdiy] Siel OR400 power supply busted

[ASSI]

On Saturday 03 August 2013, 14:29:43, M Maeghan Skala wrote:
> :( … after switching out some components and much troubleshooting, i
> :finally got the proper readings from the board.

Good.

> I plug all the ribbon cables in and plug it into an amp … no power
> the transformer's primary wires coming from the connection terminal are
> both reading 121, but the secondaries … nothing, O
> It's not the fuse, I checked that … also, i don't think the primaries
> would be getting power if the fuse was busted.

Some transformers have a thermal fuse integrated into their windings.  
Getting no reading at all from the secondaries must mean that the primary 
doesn't get power one way or the other.  Assuming that you can disconnect 
both the primary and the secondary wiring from the inlet and circuit, please 
test with a small DC voltage (diode or connectivity test on your typical 
DVM) that all coils are low-resistance.  If you can measure the resistance, 
then you should do this as well.
 
> This is so frustrating, i finally got the right power readings … and this
> :(

Well, you've certainly had exceptionally bad luck so far, it must be getting 
better any time now.   :-)



Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

SD adaptations for KORG EX-800 and Poly-800MkII V0.9:
http://Synth.Stromeko.net/Downloads.html#KorgSDada