Thetford Tecma Help
I'm hardly ever at iRV2 for myriad reasons; but, there was a thread about Tecma toilets earlier that I referenced when mine ceased operating.
Due to the limitations of this system, my two-page analysis vanished.
So, I'll give you the brief version:
If you have a completely unresponsive keypad and no hint of water entering the Tecma macerating toilet, grasp the water solenoid with one hand and attempt a flush with the other. The solenoid should twitch and water should be felt flowing through it.
My "dead" Tecma was cured by buffing/scratching the spade connector blades and reattaching the plug at the solenoid.