I didn't find an errors with the panel. All combinations of the matrix gave over 300 M Ohms each when tested.
--------------------------------------------
On Sat, 6/9/18, Bob Grieb bobgrieb@... [chromapolaris] <chromapolaris@yahoogroups.com> wrote:
Subject: Re: [chromapolaris] OK - I Have Diagnostics Now And They Are Weird
To: chromapolaris@yahoogroups.com
Date: Saturday, June 9, 2018, 1:07 PM
Transformers are just wire. (and a thermal fuse)
They sometimes fail, but
have a very low failure rate compared to other
components.
And they don't fail gradually. They either work or
they don't.
The electrolytic capacitors in the power supply may need
replacing, and the trimmer
could be dirty, but the trimmer may be fine as well.
Replacing perfectly good
components in the power supply (not the transformer)
probably makes more sense
than in other parts of the circuit, as a failure in the
supply can cause damage
to other sections. But I don't usually replace
semiconductors in a supply unless
they are not working. If a regulator has been run really
hot for many years, I will
replace it, even if it seems to be working.
But I don't understand why you would wait for a chip
that isn't needed, since it seems
you may have found an issue with a membrane flex cable. I
would think you would want
to see if what you did affects the operation of the front
panel.
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