Question about Hitachi 53SDX89B 53" Rear Projection Television
THE 3 COLORS IN MY SAMSUNG ST54JPX PROJECTION IS BECOMING DEAJUSTED, AND THE AUTOMATIC ADJUSTING, IS NOT WORKING AT ALL. I HAD BEEN TRYING TO DO THE ADJUSTING MOVING THE BUTTERFLYS SCREWS BUT IS ONLY FOR THE CANONS, FOCUSING. .. APARENTLY THERE IS NOT MORE WAYS TO MOVE THE COLORS. PLEASE GIVE ME A CLUE ABOUT THIS PROBLEM , I HOPE YOU CAN HELP ME TANK YOU,,,,,,ANDREW
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Posted on Jan 02, 2017
SOURCE: HITACHI ultrascan hd tv....
Convergence amp ic bad
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Posted on Mar 03, 2008
Either the pins on the convergence ICs need to be resoldered or the ICs need to be replaced. These are large black ICs attached to a heat sink and should be marked STKxxx. Resolder first. If that does not resolve it, replace the ICs.
Posted on Mar 17, 2008
You may be able to correct this problem with the convergence controls in the user menu. Hitachi also has on some projection sets a button called "magic focus" which is an automatic convergence control. If you can't seem to bring things back the way they should be you may have to get your convergence ICs replaced as well as some resistors in the convergence circuit. Unless you have above average soldering skills I'd suggest leaving that up to a technician.
Posted on Oct 07, 2008
I know this set very well---you are saying convergence adjusts ok everywhere? If you understand that the blue is usually de-focused a little----there are only two ways to adjust the focus of each tube-----
1.) Behind the front speaker grill there is an inspection plate---with it removed you will see a small black plastic block with 6 controls on it; it is the MASTER SCREEN/ FOCUS BLOCK
2.) THREE of the controls left to right are Screen controls(red, green and blue) and the other 3 are FOCUS--IT IS ALL black and you need to look close to identify which is focus and which is screen---you are looking for the BLUE focus control(one of the 6)
3.) With the convergence grid on screen cover the RED and GREEN lens in the set and try to adjust the focus of the blue(I presume you know how to put the set into the Convergence mode?
4.) The only other way to adjust the Blue focus is from the back of the set---with the Red and Green lens covered up place a blanket over the top of the set that covers the whole screen--from the back of the set you will note that all three of the black focal lens have a wing nut---with the convergence grid up and only blue lines present(Green and Red lens covered with a cloth) look from behind the set at the grid---loosen the wing nut on the blue lens and slowly slide the lens left or right until the blue has the best focus possible----if it will not adjust with the focal lens or the front focus control you have a circuit problem.
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Posted on Sep 15, 2009
Testimonial: "Thank You! Much better quality now! Your advice was dead on. I did not think it was convergence problem....One more Q, where do I send the beer?"
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