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 >
