Frankly this set is way too old to be spending money on, Most parts for it are not available and I would just retire it.
While it would be nice if I had the money to just blissffully drop on a new tv I don't. I understand that it may be an old tv but I know it can be fixed and since I know how to solder was hoping to find someone that would not give me a fatalistic viewpoint but some helpfull advice. I have tried to change the voltage as described but the tv screen remains blank unless I adjust the dials on
the individual lamp boards. That is when I can see the red blue and green lines. Was thinking it was possibly the vertical adjustment that had gone out but don't know where it would be.
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SOURCE: very fine red lines across srceen
The initial reply is correct, you need to try the convergence / retrace lines Basically you need to open the TV and the job is about 15 minutes to solve the issue with arched lines, either blue, greed, or red. There is a great how-to guide here with step-by-step pictures here: http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html
SOURCE: Mitsubishi WS65905 Projection TV
convergance ics and sometimes resistors go bad. call a repairman...
SOURCE: No picture/vertical lines on screen
it's called retrace lines ,your screens are set to high or focus block assy which has the screen adjustments on it also is faulty
SOURCE: Sudden discoloration, ghosting, bowed horizontal lines in top and bottom of picture
Everybody here seems to have basically the same problem so I will write a general fix for these Samsungs. First what you got is known as Convergence failure, A Ic or resistor, fuse or some other component has failed in the convergence circuit. So finding the service menu and trying to align the colors or spinning magnets on the CRT’s or a real bad idea of tipping a CRT or mirror would be the equitant of ripping the transmission out of your car because it had a flat tire. When the convergence fails no adjustment will bring it back, and if you do one of these stupid things then you have two problems. Now most of these Samsungs have an easily replicable board that all the convergence amplifiers are on. This can be found by removing the back and seeing if there is a board about 9 X 5 inches big and mounted to the CRT mounts, there will be 5 connector to this board. Now if your set does not have this board and instead has the two convergence Ic’s (these are about the size of a playing card and have the numbers STK392-040 on them) mount down on a board below and to the right ( this is known as the deflection board) this repair will not work for you. Instead you will need to component level repair the convergence circuit. But if you do have this separate convergence board the repair is fairly straight forward. Go to www.vancebaldwin.com or some other supplier and order BP95-00142E this is the convergence board. This board has been crossed several times through the years but this is the current version. Now once you get this board simply replace it making sure to get al the connector back in there original spot. The fire up the set and run Flash focus and for about 95% this will fix the set
SOURCE: RCA Model #R52Wh74 HDTV Rear Projection
Do you have the convergence option in the customer setup menu? IF YOU DO NOT consult the tips and tricks section of this website for the article ' "The fl231 fuse problem" If you do then it will need some more trouble shooting
Look through your manual. Your manual will always give you the most specific directions for your particular model. Look for an "adjusting convergence" or "set manual convergence" section.
Look through your manual. Your manual will always give you the most specific directions for your particular model. Look for an "adjusting convergence" or "set manual convergence" section.
Could you show a picture of the distended cover you mentioned?
Were the light blue lines you were referring to, diagonal, or truly horizontal?
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