Re: Tech Display on System 11


Check the two 39K, 1/2-Watt resisitors on the power supply. If these
are out of spec, then the 100V will go low with a load on it (but
often reads fine when no load is attached).

yendor0


On 12 Apr 2006 12:27:00 -0700, "orion72101@xxxxxxx"
<orion72101@xxxxxxx> wrote:

I changed out both glass displays, now it seems the -100(<100>) is
flaking. Seems to be coming off the power supply board ok, but when
connected to the master display unit, the -100 is severly depleted.
Any suggestions, as I rarely work on this vintage. Focus on the power
supply board, or perhaps one of the chips on the master display board?
Tom

.

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