psu info needed

[m3vuv]

hi all i have this sick skytronic 0-30v/010a psu,its busted and need a schematic for it,any ideas?

 

[bremen nacht]

I fixed one of these a while back...I'll try and remember where I found the schematic.

Meanwhile, what's wrong with it? Ours had a shorted output transistor. Replacing that fixed it.

 

[m3vuv]

on turn on the v meter reads 002v amp meter 0 no output and output wont turn on or off,so far i have replaced all bridge diodes 2 relays and 2 driver transistors+ pre drivers,seems the 555 output toggle crt has issues,flying blind with no schematic tho,it has 3 separate pcb's.

 

[m3vuv]

the pass transistors are fine but they get no drive.

 

[bremen nacht]

This is the one I fixed - looks like it may be a rebadged version of yours?

Word of warning though - these are prone to unpredictable surges on turn on/off.

 

[m3vuv]

unfortuanatly it looks different to mine as no 555 controled output toggle on or off,cheers anyway