WG 25K7191 SPARKING AND SMOKING! help!

squall280

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so i went to plug in my Neo Geo today and it started to make a hissing noise but the picture came up so i went ahead and took the back off. then all of a sudden it started sparking and smoking. smelling liek gun powder off those old cap guns. the pic is what was making the noises and such. what happened and what do i need to do to fix this?
 
flyback took a shit. generally when this happens on the K7000 you're looking at replacing a few items... which may or may not include: HOT, C36 cap, voltage regulator (that's IC4 I think?), potentially the fuse, and obviously the flyback. if the chassis hasn't been re-capped, you will want to install a cap kit as well.

my K7000 that blew up seriously put a dime-sized hole in the bottom on one half of the C36 cap, so I had to not only replace all those other parts, but I had to rebuild the charred traces with diode wire. I even replaced my yoke connector pins, because it hit the red wire as well.

my hacks worked. they're relatively easy to work on.

EDIT: also, not trying to be captain obvious, but you need to do something about all that dirt lol. when you lodge those things up with dirt it just makes everything run hotter and thus more failure prone.
 
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well this is the first time i ever seen the back of this monitor. i bought it off someone who said he did monitor work and this one he just got done. since the picture was beautiful never bothered to look.

so flyback needs replacing and possibly a few other areas will need some work?
 
Yes. You definitely need a flyback. I'd just go ahead and get the flyback repair kit from Bob Roberts - new flyback, cap kit, new fuse, and HOT - it's only $28.

If the monitor was still working when it was sparking, and you shut it off quick enough, then the flyback (possibly also HOT) should hopefully all you need to fix. If it was left to zap and arc for too long, it might have fried other stuff on the chassis. Last few I've fixed have just needed flybacks though. Change the flyback, check the HOT and regulator for shorts while you're in there. I'd suggest doing the cap kit while you have it out - and yes, you should clean it up... that thing is filthy :D

-Ian
 
check the k7000 sticky. When you have it out to do the flyback also make sure you dont have any cold cracked solder connections....

im suprised its still up and running. DONT RUN IT ANYMORE LOL..

the longer you mess with it, the more chance you have of killing the ht, c36, vreg, etc..

while you have it out, hit that chassis with a can of air duster or compressed air if you happen to have a compressor..
 
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