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I don't think a vacuum would do you much good; the bottom of the inverter is a large billet aluminum heat sink that'll block the force of the vacuum. That said, it might be better than nothing. A shop vac will produce static, but I don't see that as a problem as long as the unit is grounded. The...

Update for anyone following: After getting it all dried out, I got everything put back together without any leftover parts or cracked circuit boards :naner:. Next up is an operational test in my running MEP-831A, maybe next weekend. I'm also searching for a good filter solution for the inverter...

Yes indeed; the updraft fan is close to the ground where it can pick up all kinds of junk then and pushes air and dirt through the heat sink and then up into the box itself. I've never had reason to take the inverter out of my working unit so this was quite a surprise. Surprising also was...

Thought anyone following this would like an update. Got the case apart (the case is nicely made, but ridiculously complicated for what it is, IMO) and didn't do any additional disassembly. I flushed better than a cup of super-fine reddish dirt out. It's been flushed with ISA and is now drying. I...

Thanks, Diesel. Still raining outside, I'll give it a shot. I've got both distilled water and isopropyl alcohol handy. -G2

All, Thanks to all for previous advice with my MEP-831A unit issues. While Hurricane Harvey rages outside, I've been tinkering with, and gave up on, my second MEP-831A and started parting it out. I wanted to keep its inverter as a spare for my running unit, but noticed dirt caked around the...