Ben, Nice set. I can see it already had the PHA kit installed (upgraded venting on the door liner, drained boot/tub cover and upgraded machine control board!). The series is found in the first two numbers in the serial number. Yours is a series 34. Born in Newton, Iowa in Dec, 1998 but you knew that already...
The dispenser bezel does break out at the screws but there is a new one that replaces that with a bezel with more 'meat' where the screw eyelets are.
Were the water lines hooked up? You may have heard the buzzing of the water valves BUT the machine shutting off after about a minute does worry me about the motor control board. I'll bet if you pull the front panel to look at the motor board you'll see a blown fuse which means an internal short in the control and even more likely you'll find some crunchied ic's or resistors on it. That was the problem. That board was designed to take ac power, convert it to dc power and then feed it to 3 windings. The board just couldn't take it. The replacement kit changes both the motor and control to a system that just uses ac, no dc. It also comes with a line filter to protect the control and they really beefed up the electronics! I converted my MAH4000AWW and it is SO quiet now. Part number is 12002039 and it isn't cheap but it is worth it if that set is a keeper! Find your best price on the net. Just changing the board with another old one from a donor is a gamble if the motor was at fault. Bye-bye donor board! If there is no obvious signs of damage to the board, test the drive system. To test the board, simply pull the JP4 connector (4 white wires) off the board and set the timer to delay wash and turn it on. The motor should start a 50 rpm tumble in one direction if the motor and board are good.
While you are changing the motor and control, CHANGE THE BELT! You will probably have the old Dayco sourced belt and will want to goto the new Hutchinson sourced belt.
As far as the mold, I'd check the tub brushes. They are attached to the tub cover and form a half circle along the bottom of the spinner. They are supposed to keep coins from going in between the cover and the spinner and jam the pump. They collect lint and other nasty stuff and need to be cleaned every so often. I'll bet they weren't. The new boots come with a anti-microbial property but they are also not cheap. Just kill the mold/mildew and deal with the stains.
Check the wax motor in the door latch. Rule of thumb: If the plunger is the same color as the rest of the wax motor, CHANGE IT! If it's black tipped, OK.
Any other questions, let me know here or email.
RCD