[G4] G4 problems

[jonseward at mindspring.com]

I remember hearing that the power buttons on these machines are prone to
failure, producing exactly the symptoms 
you describe.  Sounds like a job for a VOM/continuity tester.  You might
try to hotwire around the switch, or to find/
repair a flaky connection/wiring, but these are pretty sophisticated
switches and a mistake or miswiring could zap 
something catastrophically.

Have you checked the power supply?

I don't know of an alternate startup sequence.  Be nice if there was a
remote or peripheral based way to start up and 
get you going.

good luck,

Jon






Original Message:

>Hi,
>
>Has anyone on the list had a similar problem and if so what was the
outcome?
>
>I developed a problem with my desktop today (G4 MDD).  It is the 
>same problem that I had about 6 months ago except that at that time 
>the problem went away almost as quickly as it appeared and I had no 
>idea why.
>
>The symptoms are simple.  When the start button on the front of the 
>computer is pushed in it lights up but only as long as it is held 
>in.  There is no chime, fan noise or any other indication that 
>anything is happening.  I removed and checked the pram battery and 
>worked all the cable connectors I could think of but still nothing 
>happens.  I think the most likely culprit is a relay in the startup 
>circuit but without a service manual it is hard to know just how 
>that works. 
>
>Is there any alternative method of starting up a G4 MDD?
>

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