Here's a DIY repair that just about drove
I had a situation where
the HWH touchpad would light-up and run the
levelers for about 20-seconds, then the power
would fail, the touchpad would go black and
if using the "store" button, a power-down mid-way is a very bad thing.
Our Newmar had a Remco control box under the dash for
an oil-pump for a Toad. It had been poorly
spliced into the hot lead to the HWH Leveler
brain-box. I don't need the Remco so I neutered
it. NO more Leveler problems...