Carl Denk wrote:
> Disconnected cable from power supply board to video board, and the 5 
> volt supply measured at 5 volts. Used a 20 ohm resistor to create a 1/4 
> amp load, still had 5 volts, changed to 10 ohm resistor for 1/2 amp 
> load, and the 5 volt was back to a couple of tenths volts. I'm assuming 
> that some regulator chip is shutting down due to over current, but am at 
> a loss where to go from here.
>   

    Suggestion:

    Verify ripple at 5V output at 20 ohm load.
    If excessive, replace the 5V filter capacitors.

    Mark Jordan
  
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