Repair methods (was Cromemco 3101/Beehive B150 score)

5 Jun 2006

...
   I would love
to see anyone understand an SMPSU without understanding
 analogue electronics...  
 That is, I think, why I have so much problem trying to fix them - my
 understanding
 of analog is inadequate. 
The main problem I have with fixing SMPSUs is missing some seemingly 
minor fault (like a diode that breaks down under load only) which causes 
all the nice, expensive, new components that I've fitted to blow at 
switch-on. A series light bulb helps (if only to reduce the shock to _me_ 
when the thing tries to put a dead short across the mains), but won't 
always save the expensive chopper transsistor.

-tony

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Repair methods (was Cromemco 3101/Beehive B150 score)