I saw a youtube video on how to repair it & it was actually very easy, by re-affixing the thin cables attached to the left & right side of the monitor & adding some scotch tape for better contack i guess, but it was for a Samsung TV & the diagrams of that tv is different from my Coby.
Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.
SOURCE: Blurry on one side of screen. Green and purple shadows
Convergence IC's should be replaced before any alignment is
attempted ....part # STK392-560....You need two......mount
to large heatsink...............T.
SOURCE: Blurry on left side of the screen. Shadowing in different colors.
Try this website. It is the Hitachi support website. http://www.hitachi.com/GlobalSupport/ContactUs?form_type=global_support Hope this helps :)
SOURCE: Picture shadow on rear projection Sony big screen TV
You have 2 distinct problems that should be addressed separately. Please repost the Samsung problem. I will address the Sony problem here.
If the "shadow" makes the picture seem somewhat of a 3D one, the problem is with the convergence circuit. This could be as simple as bad connections on the pins of the convergence ICs or defective ICs. If you can solder and would like to attempt the repair, update this and I'll provide more details and instructions.
Dan
SOURCE: Picture is double lined of greens and reds
You have a convergence output IC failure. You my also need a few small associated parts as well. Expect to pay $350-450 to have this fixed.
michtech
SOURCE: sony xbr-52in projection tv show double picture's
It sounds like a convergence problem. A fairly common reason for thisproblem is the convergence chips have failed. They are usually referredto as "STK" chips since the model number of these chips start with STK.I will put a link to another part of this site where someone has postedpictures and a link where to get the parts should you decide to fix ityourself. Look at Ecullier2012's posting. Jean's posted site will notfix this problem. Hope this helps you out. Let me know.
http://www.fixya.com/support/t1684874-screen_blue_green_green_red_outlines
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