Just turned on my Samsung 42in HCM4216W TV (5 years old). Everything was good for a few minutes, then the blue and yellow got separated into double images. Turned it on and off a few times. Everything, it was good the first 5 seconds it's on, then the double image shows up.
Could someone please advise if this is something simple / inexpensive that one could fix (just have very basic electronic skills) and, if so, some guidance on how to do so would be appreciated!
Well, fortunately the television that you purchased has an auto-convergence feature. What is happenning is that your color lamps are misaligned, did it get moved at all recently?
Anyway, in your menu you should see a "Convergence" menu, and inside that menu, a section called "Perfect Focus". Run Perfect Focus in this sequence: Green --> Red --> Blue
After that your picture should look great, if not try tinkering with the manual adjustments on the "Convergence" menu. Here are some URLs that you might find helpful: (just copy+paste into your browser)
Your Television On Samsung's Webstire:
Your Television's User Manual (Download And Open With Adobe PDF Reader) (The "Convergence" Menu Is Section 3.3)
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can you look into the blue lens when the set is playing using a hand held mirror and see if there is a picture in the blue CRT. If not you will need a new tube for the blue. If you do need a tube let me know as I have a source for good used tubes that are very reasonably priced.
VS is vertical scan of course it is controlled by applying voltage, lower or higher you affect the scan, it appears as focus or sharpness, if it is outside the specifications listed on the back cover(inside) then it will not function properly. definitely get with samsung on this and get a ticket number so they can not just blow you off, if you have an extended warranty they might have to replace the tv as this sounds like it may be a tube issue not just a scan issue, also don't let the tech leave until the tv has warmed up and the image is either the way you like it of he stays.
THIS HAS NOTHING TO DO WITH CONVERGENCE or any of the stk integrated circuits.There are few capacitors close to the vertical output ic, they are usually blue or red (could be 1000uf 50volts for e.g.)That where the problem is
I have the exact same problem with my six year old Samsung! Your are the third person I have seen with this problem today. This is too weird. i wish i could help, then I would be able to fix my TV too.