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Top is up no prop. Head injury imminent. Prop it up next time!

If this were not a custom panel built-in unit and if Fisher and Paykel in their infinite wisdom hadn't made their new model custom dish drawers a different size (really frustrating... am guessing some value engineer figured they could save $1 per unit by switching sizes), I'd have junked it by now. However, hacking my custom cabinets to pieces isn't an option... My 2004 DS603 started leaking from the lid. It wasn't bad but enough that the dishwasher shut itself down once a week and it took 3 - 4 days to dry out. No problem I thought, easy fix, I'll replace the lift motors. That didn't fix the leak. So I replaced the lid. Real pain in the neck for something that seems like it should be simple. Somehow I got the lid on backwards and of course it basically rained in the dishwasher cabinet the first time I ran it. The water sensor in the cabinet triggered with the familiar beeping and drain motor running constantly so I pulled the unit out to find a good 1/4" of water in the cabinet bottom. The mains board had started smoking and by the time I got the breaker turned off, the mains board had pretty much turned to charcoal on the sensor end. OK, so I figured I'd dry everything out, turn the lid around, replace the mains board (part number 529849P) and about $100 in additional parts later I'd be back in business. Well, when I fired the Dishdrawer up, after installing the new mains board and cover, nothing happened. The badge didn't work. Nothing worked. After about a minute a foul smell came from behind the front panel. I shut off the power at the breaker and after investigating, found that the controller had gone up in smoke - literally. Ugh. So $150 later I had a new controller (part number 528397usp) . I also figured I'd replace the heater unit and motor stater since those are the only things that consumer any real power from the controller board... just to be sure. So I got new parts for each and put them in. While I was installing them I checked all the wires... everything looked good. I checked the mains board, it looked fine, verified the L was the hot wire and N was neutral with my meter, replaced the controller, buttoned it all back up and turned on the power. About a minute later... smoke again from the controller board... WHAT!? So now I've ordered yet another mains board and another controller... I could have rebuilt this entire dishwasher 3 times for what I have into it in parts... and I have every expectation that when I turn the power on again, it's going to smoke another controller... what's up? There are not really any more parts to replace except the fan, dispenser and water valve but I really don't see how those can be causing the controllers to smoke or why they might have gone bad because of the initial water/mains board meltdown. The part in the controller that is smoking is the large black capacitor in the center of the board if that means anything. Anyone got any suggestions or ideas?