13 May
2006
13 May
'06
7:07 a.m.
What the problem with the machine, at least I believe, is, is that the
memory is not getting any power.
The light on the H745 is not coming on. I'm trying to figure out why.
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of Tony Duell
Sent: Friday, May 12, 2006 6:54 PM
To: cctalk at classiccmp.org
Subject: Re: BA11-K low AC output levels
You're right. Somehow when I reassembled the power supply when I
wasn't testing it (just put it back together to move it out of the
way)I put the
H745 in the WRONG SIDE. Therefore, I have it now hooked up to the
battery backup plug.
I am not sure how this has any effect on the voltages you
measure on the transformer secondaries.
Can we go back a bit, please.
1) What is the problem with this machine -- it appears you
think there's a PSU problem. Which output(s) are defective?
2) What do you measure at the (transformer) inputs to the
regulator bricks. Rememebr a (working) voltmeter has two
leads, so you are always mesuring a voltage between 2 points.
What are those points? When checking the transformer output,
you connect one voltmeter probe to each of the transformer
wires at the regulator brick -- not between either wire and ground.
-tony