I was send by the seller of the scooter the parts and instructions to fix it. Here I am posting the instructions send to me, this information applies to all scooters of this design. Hope this help others.
Reasons why Sea Scooter failed:
Gears and bearings did not have any lubrication (disgruntled employee @ factory?) causing the bearings to freeze and jamming the motor and burn it up, the load on the motor caused the CMOS Chip Controller to overheat causing a electrical failure.
NOTE: When disassembling the scooter make sure to put every screw for each section of the scooter in separate zip lock bags and label it, that way you will not have a hard time putting it back together. IMHO.
Parts replaced:
1- All 9 bearings
2- 24VDC Motor
3- CMOS Chip Controller
Packed with marine grease all bearings, lubricated the gears with grease, replaced motor, CMOS Chip Controller, added silicone grease to all silicone seals, re-assembled Scooter. Alive again!!
If you have one of this type of sea scooters, check to make sure the transmission and bearings are well lubricated, as with all metal moving parts friction will develop into a headache, check, lubricate, lubricate. Make sure you check your scooter at least monthly during heavy use and quarterly while is not in use. Small amounts of water will get into the transmission, I found rust on the gears in my 2 time used scooter at sea.
If you can spare the money get a Torpedo 2000, 2500 or 3000 you will like it. I rented one from the LDS and is heavy but well built with a good depth rating and plenty of battery time.