The service / technical manual has a very clean troubleshooting procedure for this LCD issue in section 5. For Vee (-5 rail) check D15, C85, D14. Given that the problem has a time correlation to it, my money is on C85.
The service manuals for these machines are EXCELLENT. I highly encourage anyone working on a 100/102/200 to refer to them: http://www.club100.org/library/libdoc.html -Josh On Mon, Jan 7, 2019 at 2:45 PM Fugu ME100 <b4me...@hotmail.com> wrote: > > Did you check the Vee voltage? It should be close to -5V. > > What you describe sounds very much like a failing -5V rail. But need to > confirm with the Vee measurement. It might be time to replace the > capacitors :( >
