Re: hp85 trouble Message #5 Posted by andy on 4 Sept 2003, 10:37 p.m., in response to message #4 by David Smith
Well, its not the power switch. I de-soldered both wires from the switch and soldered them directly together. After plugging it in, it came up just fine for about 2 minutes and 10 seconds. Then the power light goes off, the screen goes blank, and the cassette light comes on.
Then I can give the unit a nice solid tap on the corner just above the power switch and it resets itself and comes back on (picking up on that corner does the trick too). Then it returns to its locked-up state with the cassette light ~10-15 seconds later.
Should I check the big transformer next? It seems like a power supply problem to me.
Any thoughts?
Thanks...
Andy
Edited: 4 Sept 2003, 10:42 p.m.
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