Question about RCA P61927 61" Rear Projection Television
Main Fuse went out replaced the fuse and the auto convergence is shot. I can completely remove the power supply board and nothing changes. It is as you said in another post the tv is acting as if it is not projection. Please help....
Have u replaced the STK ic from the main boards to make the convergence ok.
as this stk ic goes short when their is a convergence problem. so please check out on the main board for this ic and replace it to make the convergence proper.
Posted on Oct 25, 2008
One never knows when an electronic circuit is ready to fail.
You may have an intermittent condition, however. The test for that issimple: Just bang on the side, top or back with your hand or fist tosee if you can shock it back to normal operation. Sometimes a loosewire, cold solder joint, etc. can act up and give these kind ofconditions.
Are you sure it is a convergence problem? If the registration of thecolors is so far out that you cannot get them back into alignment withthe crosshair settings or if the registration is off on the sides oredges but okey in the middle, then you do have a convergence problem.But if the picture is fuzzy over all the screen, then you have a focusproblem, not convergence.
Yes, there are convergence boards for replacement when yours goes bad.They are expensive and still require alignment by someone experienced.
Here is what I suggest: Study the picture detail and explain exactlywhat happens to the lines and colors during turn on and warm up, etc. Then relay that information to me and I can make a more educated guessas to what the problems may be.
If you are adventurous, this web site has information on how to getinto the service mode where you may be able to make adjustments. However, if the adjustments are changing dramatically over time, thiswill not solve the problem. There are other service tip links on thispage, also.
This site has some good stuff for you, also.
Posted on Oct 25, 2008
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Posted on Jan 02, 2017
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