Re: C128 Repair

From: Pasi Ojala (
Date: 2006-11-06 17:57:50

> Have you checked the clock -is that running?  (both the crystal and  
> the 7801 and on the Vic2)

Just with the multimeter. 2MHz to 8502 is 1.9V, so it guess it
would be running fine.

> Did you check that you have both 9 VAC and 5 VDC from the power  
> supply?  Also check the voltage out from the bridge rectifier that  
> makes the +12 V from that 9VAC.

Both +5V and +12V are present on the motherboard. And the power supply
itself works with another machine.

I need to drag it to work to get more precise info. Probably an hour
with the logic analyzer will point to the right place. Or at least
I'll get nice scope printouts :-)

"Maybe the doc's right. Embrace the moment. In the end, that's all we have.
 Trouble will come in its own time, it always does. But that's tomorrow.
 Give me today, and I *will* be happy."
	-- Sheridan in Babylon 5:"Epiphanies"

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