1997 SEADOO GSX jump start fried MPEM

[JohnDCO]

I have a 1997 seadoo GSX 787CC N/A with VTS, it was jumped with a jump starter now I have no beeps, no lights on gauge even pressing start/stop 5 times. I am positive the MPEM is the problem. The stater the grounds and battery have checked out fine,the connection all clean and I have power going thew the MPEM and NO blown fuses. Somethings bad in the MPEM and I really want to find out what has likely blown inside I would like to try fixing this one before buying a new one for $600 I don’t have money like that. Please anything will help, anyone have an idea about what diode or something to look for upon taking the computer apart. Thank you-John



IN GOD WE TRUST

 

[JeremyD615]

Call Westside Powersports and see what they can get you a good tested used MPEM for. It should be much less than $600...

 

[JohnDCO]

Hey i spoke with Nick great guy he explained that this 1997 GSX I have is a one year model part at least for the MPEM he is the one who told be $675 for a used one or $800 for a oem new in box. Has Anyone fixed these computors before or is mine a paper weight now

 

[JohnDCO]

Also no burnt fuses and I have power traveling to MPEM and out to gaugues but nothing when press start stop with key out nothing with key in...

 

[JeremyD615]

I forgot you had that oddball MPEM for the ‘97... You can try to keep troubleshooting on the off chance that it’s something outside of the computer, or you can do a search on trying to remove the potting and replace the diode in the MPEM, but there’s a good chance that you’re going to have to bite the bullet and get the new computer. Unfortunately that’s the gamble you make when you jump these things.,.

 

[RockwallRick]

Wow!! That's good to know! I must have got lucky when I jump started mine!

 

[JeremyD615]

Wow!! That's good to know! I must have got lucky when I jump started mine!

Yes, never, ever jump start a Sea Doo. This is especially important on the boats and the skis with low production MPEM’s since they are rare and expensive to replace...