Return to Q&A Database
monitor warp/distortion
Question from Shane: hi,
I recently got an arcade machine. it’s LAI cabinet that has a 60in1 gameboard in it. monitor is mounted vertically.
the picture has 2 things happening to it from what I can tell.
1. the image has a slight wave along the bottom that slowly moves a tiny bit up and down. and the top right seems to be pulling the image up toward it. as if someone’s grab the corner of the image and pulling it toward them.
2. the colours look like something out of the 70’s across the whole screen. that get worse toward the right side of the screen. with a noticeable red tinge area down that whole side. towards the bottom left side there is an area that seems to have the correct colour in it.
(locations of what I described were looking at it in the vertical position.)
I had a friend help replace some capacitors that had leaked and that he thought required replacing.
we plugged the chassis back in and as we were trying to adjust some pots to see if they made any difference. he changed the image so it started squeezing in from the sides and one of the capacitors blew up..
I wanted to double check what the problems could be before we try too much more
I would appreciate any advice.
I really enjoy your YouTube videos and podcast,
thanks
Shane
1 answer
Response from Jonathan: Shane,
There are only a couple of reasons why capacitors should blow up: if a polarized capacitor was placed in the wrong postion, if a capacitor is getting too much voltage or if a capacitor is past it’s life cycle. I’m leaning more towards the second reason after hearing your explanation. You could try using a multimeter to get the voltage at the capacitor that blew up to see what it was receiving if you want to verify. If this is the case, we recommend replacing the flyback and replacing the rest of the caps on your monitor. Since you found some caps that were bad, I wouldn’t be surprised if there were many others that were bad as well. We would normally recommend replacing the Horizontal Output Transistor (or HOT) but since you are getting a picture your HOT is probably good.
Hope that helps. Thank you for your question and keep us updated on your progress.
This question has been closed

