Hi,

I once found that my LCD was spitting garbage and sometimes went blank. On inspection with the panel itself I found it would happen when a contactor picks up. My experiments.


1. LCD changed with a different brand --> Reduced frequency of the problem but still exist
2. LCD timing --> Reduced the missing display
3. Remove shielding from the LCD mounting --> Problem almost gone

4. Software measure taken:

Use the Flag to re-initialize and clear the LCD after contactor pick up/drop.

So what I mean to say is that in my case the LCD itself was picking up noise and not stable.