excellent! I will remember this. Thanks for sharing, Kurt. On Thu, Apr 9, 2026, 16:48 Kurt McCullum <[email protected]> wrote:
> Finally had time to track this down. I'm passing this along for anyone who > might have this happen down the road. > > The contrast POT (VR1) was not the problem. The 100k resistor (R10) which > is part of the contrast circuit went bad. I took it out to measure the > value and instead of 100k my meter said 1.7meg, so 17 times what the value > should have been.. > > I can only speculate as to why, but since that resistor is right next to > the memory backup battery I think that's the key. Long ago this battery > leaked before I changed it out. Looking at R17, I could see discoloration > on the leads. > > So one small resistor was all I needed to swap out and this machine is > back up and running. > > Kurt McCullum >
