Sega G-loc down again :(

[perjmolsen]

Hi There

Goodday to all in the forum, I am writing again because my Sega G-loc deluxe is down again 



I have restored the powersupply in this tread http://www.gamoover.net/Forums/index.php?topic=36585.0

And it had worked great,  I have played the game, and it had been fun
But yesterday when I where playing.. suddenly BANG... and power where out and a bad smell....

So now my beloved Sega gloc is down one more time.

I have looked at the powersupply and it is the same one that i rebuild who has failed, the one who is powering the right motor



It seems visual that it is the K1250 mosfet who has been fried




A bit at the corner


What can cause the K1250 to be fried?

Hopefully GC339 and all the other great people who helped me the last time is still around, and see my post you where all super help last time

My plan so far..get the energy back - take a deep breath, coffie-- think, more coffee and then
Remove All the Mosfets at the H bridge and test them all, and replace the bad ones.
But what might had caused the breakdown..?

Kind Regards
Per

[perjmolsen]

Hi

A small update

I have followed the steps in this repair guide
http://www.gamoover.net/Forums/index.php?topic=28660.0

Step 1 to 3 is complete and all checks out OK, so far so good 

But step 4 there is no input voltage at "D9" - so i have to figure out why. 
so i am stuck at this step at the moment

If any have some imput please feel free to comment

Kind regards
Per