Geez Dan these monitors must surely be jinxed. Did you have insurance on your Car PC? I listed it on my car policy as an audio system.
I hate to take advantage of your misfortune, but having a spare could be very handy for me over here. I'll send you a PM.
Mine played up again the other day and it was a loose connector on the interconnect cable at the input box end even with it cable tied into place. Gave it a jiggle and it was fine.