Trash Compactor - Needs TLC (Penngrove)

This Whirlpool trash compactor has given us great service. Twist the spring loaded switch and it automatically went down until the pressure signaled it to stop and then it would come up again and stop. But a couple of years ago the automatic function failed, something in the pressure sensing I think. It goes down and then makes a rumbling noise when it tries to keep going and can't. I multi-task at something close by and flip the switch again when it makes the noise. Then it comes up and makes a louder noise trying to go beyond the top restraint. I shut it off then, BUT the plate usually is not all the way up (but almost!) so I turn it on and let it complain for a few seconds, shut it off and try the door. After 2 - 3 tries the door can open. I was perfectly fine with my manual process but now we (she) are upgrading the kitchen and she does not want a trash compactor, passé she says. Practical I say, but it is her kitchen. So, you could use it as is, or for more fun for the mechanically minded, you could figure out where in the pressure sensing system a screw loosened or a brace bent, etc. (And tell me when you've figured it out!) A video I just watched suggested the directional switch (PN WP777811) might be bad. I have taken switches apart and cleaned them up. I'm just trying to keep it out of the metal recycling bin at the dump.