25" k7400 keeps blowing the power ic.

punkshere2stay

Active member

Donor 2012
Joined
May 10, 2010
Messages
2,987
Reaction score
16
Location
fort worth, Texas
Was working.. sold the game.. didn't work once there.. had a local guy repair. It.. was working for his burn in.. got it home sat on a shelf.. had a need to use it hooked it all up fired up and was fine..ran for hours went to turn it on this morning... her a really short degausand then nothing.. put in another ic turned it on same thing. Put another in it but unpluged the degaise coil and bam monitor works... well so far so good... what can / should I be looking for?
 
mabye yeah thats a good idea mod ohm between either of the two degauss pins and the metal frame of the monitor and see if you find a short.

If not, mabye some transistor or diode associated with the degauss circuit is shorted causing the chassis to always degauss or something


Getting ready to pull my 7400 in an area 51. My width randomly shrinks up then snaps back into position, already reflowed the remote board so its time to hunt on the chassis.
 
Last edited:
Back
Top Bottom