Were you testing the voltage on pin 4 of the LCD cable or somewhere else?
On Wed, Apr 1, 2026, at 6:50 PM, David Plass wrote: > I had the same experience with an 8201; my issue was two broken traces that I > had to jumper to get the contrast to change (with a good potentiometer). On a > T100 I also found that recapping it helped the contrast (because the old caps > were out of spec so it wasn't producing the right voltages for the LCD.) > > On Wed, Apr 1, 2026 at 6:55 PM Kurt McCullum <[email protected]> wrote: >> __ >> I have an NEC8201a with an LCD contrast issue. It acts like it is in full >> contrast mode. I can still see the letters underneath and at the right angle >> it is slightly readable. >> >> I thought it was VR1 so I de-soldered that from the board and tested it. It >> checks out 0-50k on each of the two pots. >> >> Put it back in but I get the same results. >> >> Has anyone had this issue before? >> >> Kurt McCullum
