We probably have a different HWH control panels, but I think all their buttons work on the same principle. I.e., they all are switched to ground.
I was stuck with my jacks down in a State Park when I discovered this trick:
* Obtain access to the back of your HWH control panel if you can.
* Take a voltage probe and tap the back of that electronic component (behind the bad HWH button) with your probe. See picture. You can tape either side to get it to work.
==> If this works you can probably take your board to a local electronic repair shop and have that part replaced. Or you can send your control board to HWH for repair. It will take about 10-15 days for TAT. Be sure to get an RMA number from HWH first. They are very good about repairing your or replacing your control board. I think mine was a $325 bill, but I can't remember.
Note: I did not think of getting this board repaired locally, because I thought the "button contacts" were my problem. Still, I should have confirmed this at an electronics shop for $40... or maybe some of you know it that's a diode or capacitor my voltage probe is touching in the picture? ... Whatever it is, my jack operated when I touched either side of that "electronic part" so that implied a bad button. (See picture #2)
Note: You might also try starting your engine (with jacks down); and with your foot on the brake... put the transmission in drive. This may trigger an "emergency override" and that may or may not raise all your HWH jacks? (TBD)
Here's a thread on this subject with more information: