I recently pulled a bad Easytouch display and the contrast on the replacement made it difficult to read. I figured I'd do a writeup on how to adjust it... Just below the 16 pin header for the LCD you'll see resistor R37, which controls the contrast. Normally these displays use a voltage divider for contrast - and there's evidence that Pentair designed it that way but they didn't populate R38. All you need to do is adjust R37... but you have to figure out what value works best. I found a 5k "trim pot" (aka variable resistor), set it to 5k, and soldered it in place of R37 (don't use it at 0k because that could damage the display) I temporarily mount the new display by setting it over the header pins as if I was going to solder it... but instead of soldering I tilt the bottom of the LCD up, which puts pressure on the pins and makes decent enough contact with the LCD for the board to boot Power up the board while keeping up the LCD pressure (could use a th