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This is for the monochrome CIM I'm assuming? If I get some time, I'll tinker with mine and see if I can figure it out. I looked at the ribbon cable schematic in the TM, but it wasn't helpful.

Okay, in all my recent tinkering with the CIM's on my MEP-805B generators, I have learned a lot. One of my discoveries is that the keypad literally emulates a serial mouse. You can disconnect the keypad's db9 connector and plug in an old serial mouse instead and use that to move the cursor and...

Agreed! $10 each would be awesome! They're $424 each, with a minimum order of 25.

Oh, and I forgot to mention in all my Google searching to find a replacement keypad for a reasonable price, I found what I'd describe as a technical service bulletin basically stating that there are known reliability problems with the keypad. It said to check the date code on the keypad, and if...

Hello, Mine is an intermittently bad keypad for sure, as I have swapped them between generators and the problem follows the keypad. I am putting my plans to build an arduino based keypad on the back burner, because I found an entire used, very low hour control box, complete with color CIM with...

Hello, Did you ever find a resolution to this keypad issue? I have two MEP-805b generators, and one has a keypad that has intermittently inoperative left, down, and select keys (all the important ones). I took the keypad apart to clean and inspect all the connections, and with the hope that I...