Gamoover
Forums " WORKSHOP" => Alimentation, Electricité, & Cablage => : perjmolsen Thursday 30 November 2017, 10:47:31 AM
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Hi There :)
Goodday to all in the forum, I am writing again because my Sega G-loc deluxe is down again :'(
(http://gamoovernet.pixhotel.fr/pics_gamoovernet690px/20171130105557-perjmolsen-Gloc-down.jpg) (http://gamoovernet.pixhotel.fr/pics/20171130105557-perjmolsen-Gloc-down.jpg)
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
(http://gamoovernet.pixhotel.fr/pics_gamoovernet690px/20171130104419-perjmolsen-PSU.jpg) (http://gamoovernet.pixhotel.fr/pics/20171130104419-perjmolsen-PSU.jpg)
It seems visual that it is the K1250 mosfet who has been fried
(http://gamoovernet.pixhotel.fr/pics_gamoovernet690px/20171130104532-perjmolsen-K1250.jpg) (http://gamoovernet.pixhotel.fr/pics/20171130104532-perjmolsen-K1250.jpg)
(http://gamoovernet.pixhotel.fr/pics_gamoovernet690px/20171130104555-perjmolsen-K1250-2.jpg) (http://gamoovernet.pixhotel.fr/pics/20171130104555-perjmolsen-K1250-2.jpg)
A bit at the corner
(http://gamoovernet.pixhotel.fr/pics_gamoovernet690px/20171130104614-perjmolsen-K1250-3.jpg) (http://gamoovernet.pixhotel.fr/pics/20171130104614-perjmolsen-K1250-3.jpg)
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
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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