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Title: monitor / screen growing problem Post by: pimppride on April 01, 2014, 02:21:05 pm recently I noticed after a while of playing TRON, the screen starts to grow or enlarge ( with a wave or bend to it in the right side ) like if the horizontal and vertical control was readjusted during play... I assume its a heat or voltage issue ???
where should I start ? thanks Anthony Title: Re: monitor / screen growing problem Post by: pimppride on April 01, 2014, 02:25:32 pm also, researching, how do I tell what monitor I have in this...
Title: Re: monitor / screen growing problem Post by: John's Arcade on April 01, 2014, 02:35:33 pm also, researching, how do I tell what monitor I have in this... Check your B+ voltage. Post a photo of the chassis. Title: Re: monitor / screen growing problem Post by: pimppride on April 05, 2014, 12:09:22 am I hope these 2 photos help , where do I find the B voltage, I need to dig up the manual with schematic right...
http://db.tt/SakZSjhs (http://db.tt/SakZSjhs) http://db.tt/tjk2dsWC (http://db.tt/tjk2dsWC) Title: Re: monitor / screen growing problem Post by: jasonsmith on April 06, 2014, 12:36:47 pm I don't know what monitor that is from the pic, guessing maybe a K4900?? It may not have a B+ adjustment. I know on the GO7 a wave is caused by bad connections at either the fuse block and or the edge connectors or grounds. Since yours does it after a certain amount of time I would agree that something may be starting to fail. When was the last time it had a cap kit? Maybe your monitor headers etc need to be reflowed.
Title: Re: Post by: Etienne MacGyver on April 06, 2014, 01:46:11 pm I think caps
Title: Re: monitor / screen growing problem Post by: lojack on April 07, 2014, 10:56:22 am look on the chassis or the back of the neck board. sometimes is it there. your pics didnt show any of that info. with the chassis you would be able to search for the right schematic to find out the test point for the b+ and for the correct cap kit if needed.
Title: Re: monitor / screen growing problem Post by: John's Arcade on April 07, 2014, 11:03:43 am That looks like a 4900 to me.
Here's how to check the B+ http://newsgroups.derkeiler.com/Archive/Rec/rec.games.video.arcade.collecting/2007-08/msg01948.html Title: Re: monitor / screen growing problem Post by: pimppride on April 07, 2014, 12:55:38 pm yea, for photos its a little awkward angle, the chassis or framework of the monitor has a metal triangle section in front of everything, I am going to try to get into it later this week and get some better photos and look for markings...
I found a few of johns arcade & others you tube videos on monitors over the weekend which cleared up allot of info for me, will see what the investigation finds... Title: Re: monitor / screen growing problem Post by: pimppride on April 13, 2014, 06:56:34 pm from what I can tell watching youtube videos & poking around online its a WG 4900
here are some better photos, please correct me if I am wrong, I'm going to order a cap kit this week... thanks everybody (http://sprintstar.com/images/tron/IMG_0722.JPG) (http://sprintstar.com/images/tron/IMG_0724.JPG) (http://sprintstar.com/images/tron/IMG_0729.JPG) (http://sprintstar.com/images/tron/IMG_0730.JPG) (http://sprintstar.com/images/tron/IMG_0731.JPG) (http://sprintstar.com/images/tron/IMG_0735.JPG) |