Wells 7400 shutting on and off

newkid3

New member
Joined
May 30, 2014
Messages
659
Reaction score
1
Location
Kentucky
Hello, i have a wells garner K7400 in a bear and moose arcade. The monitor all of a sudden appears to start turning its self off on off on etc. The monitor has been recapped. It has a new flyback. I am going to try to link a video of what it is doing here. The monitor looks really good when it first comes on. Then within about a minute it will start doing what you see in the video. Anyone have any idea? Thanks

 
Last edited:
Generally there is bad solder joints at the AC power connector as well as at the video/sync input connector.

I've had a couple monitors from this generation where the AC plug had cracked solder joints. if you're able to noticeably move it back and forth or the solder joints are ringed, start reflowing those.

probably unrelated to your problem, but if the chassis has all the original Wincaps on it, I would encourage replacing them. while you're doing this, I advise reflowing solder on the transformers, the signal header, and the 2 sets of yoke pins.
 
Back
Top Bottom