John, I have no insight as to the fault on the mainboard. The main chip on the front panel was fried as I reversed the coms cable when attempting to investigate. I thought it best to call it a day then.
PhilCTTE & jwceltic your MDAC's have been recapped - I'm waiting for the shipment to arrive with the x5 larger Capacitors on the PSU board, then the units can be shipped.
Phil, all of your capacitors where physically OK (Did you MDAC get much use)? - but I recapped your unit as its a full Fusion AV and worth keeping - I also replaced your USB connector (originally I forgot)!
So as far as your aware the mainboard is OK?