1st i have a samsung 53' big screen.. produced oct.2000 model # pcj52r.
t.v. worked great all these years ..no problems... till 1 day i turned t.v. on n noticed a hour glass pic. then it would go in n out.. then str8in out n was fine for a few weeks..then another day turned t.v. on n the pic got blurry, colors dont look right.."kinda weak in a way" took off back panel.. bulbs are all on n working.. just dusty on boards below...
i tryed allining the lines but.. it doesnt seem 2 stay on top of eachother.. jumps off.. n flickers ... what can i do??... i am pretty good with fixing stuff myself.. so if its possible can i order a part n fix it myself??.. help.. i want my t v back.. thanks..Dominick
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Re: bad color, blurry, hour glass screen...
This is the most common problem with projection based sets, what you have is known as convergance failure. There are two Ic's and in a Samsung they are STK392-040's these will need to be replaced and possibly a small fuse and a few resistor. I am haveing trouble with the moidel number you gave and cant quite nail it down, but some Samsungs put these all on a easly replacable board. This board BP95-00142E is about $80.00 and avalible at www.vancebaldwin.com A easy way to tell is remove the back and see if these huge Ic's STK392-040 are mounted separly from everyother board and are mounted to the crt mount
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Hi Sandy, the problem with your TV is called "convergence". It can be a problem with the convergence board or more likely in this model in the power supply or deflection circuits. Unfortunately, troubleshooting by a technician is required.
Check the resistors near the ic, and the fuses to the ic's, i bet you will find an open fuse. the fuse will look similar to a resistor without color bands. use a dvm and set it on ohms, with the tv turned off.
there are 3 things that will make your tv go blurry, the focus and screen control assembly , the high voltage splitter and the horizotal transformer and that is only if all three tubes are blurry.if only one tube is blurry, more than likely the tube itself is bad.
Are you scanning both black and white and color the same way? The ADF (automatic document feeder) uses a different scanning area than when you place the document on the scanning glass. If you open the scanner cover, look to the left of the main scanner glass to the narrow strip used for the ADF. Make sure this narrow strip is clean -- no ink or white-out or scratches. This can make your copies look dirty or smudged.
IF YOU HAVE DOUBLE IMAGES YOU CAN GO IN THE MENU AND TRY TO ADJUST THE CONVERGENCE, OR US THE AUTO JUST. ON SOME SETS IT IS ON THE FRONT. IF IT DOESN'T CORRECT THE PROBLEM THEN IT IS CONVERGENCE. I REPAIR 2-3 A WEEK. WE DO IT IN THE HOUSE, NO NEED TO TAKE THE SET OUT. MAKE SURE THEY REPLACE BOTH CHIP'S AND THAT THEY USE ORIGINAL PARTS, THE GENERICS DON'T HOLD UP. THEY USUALLY LAST 3-5 YEARS DEPENDING ON THE USAGE OF THE SET. DON..
Go to the picture control menu and turn the color to minumum so that you are watching a black & white picture. Do this to determine if the color offset affects the overall screen or just the lower corner. If the center is off, go to the convergence adjustment menu and align the red and blue onto the green as described in the owners manual. Some models also allow you to align the outer edges as well. If the bottom is still bad you may have a problem in the convergence circuit. If the outlines are not seriously bowed or distorted a minor convergence toutchup by a qualified technician should correct the problem, otherwise parts are involved and the repair is considered major.
Sounds like theres a leaky capacitor in the screen drive circuit. I have seen this problem also be a gassy crt but was able to clean off the grids of the CRT with a crt/rejuvinator. It happens because of low emmissions in the tube and when white is on thats a mix of all the colors, so the tube works harder. I bet when you whatch a movie and the scene changes suddenly to a white or brite scene the pic looks a little washed out. If this is not the case then I aggree with the Pravin and try it on another TV just to be sure .. This is not a repair for a consumer to do, though however it is only a three year old set you stated, so there should be life left in the tube, so im kinda thinking a capacitor is bad. Seek out a yechnician to check this out for you as a TV is not a place to see it you can fix it or to exoeeriment with. Good Luck