Question about Hitachi 50UX57B 50" Rear Projection Television
BLUE SHADOW, HOW DO I GET INTO THE CONVERGENCE ADJUSTMENT!!!!
Do you have a magic foucus button??
Posted on Aug 15, 2007
If you mean that one of the colors has suddenly drooped toward the center, creating a curve along the side where the colors no longer line up, it means that one of your convergence IC's has burned out and needs to be replaced. You should not play with the convergence settings when this happens because when the IC is replaced, the settings will be all out and have to be reset. It is a good idea to replace both STK392-110 IC's with the newer improved STK392-150's. If you have never replaced convergence IC's or realigned convergence circuits then allow a qualified tech to handle it for you.
Posted on Aug 07, 2007
I have a 50 inch projection tv we replaced the bulb on the left front of the tv and we still have a problem with a bright spot right in front of the tv, making it hard to view the tv. Is there a solution? Thanks for ur help alice
Posted on Dec 16, 2008
Tips for a great answer:
If the symptom didn't cure by convergence adjustment through the remote control, this is an indication of faulty convergence board inside. You may replace the convergence IC's and some of the resistor around because its already gone bad. You may also replace the entire convergence board for your convenient. If the board replaced with new one, your unit will back to normal again. Also, consider bad solder joints in that area, it will do the same symptom like what you've encountered right now. Find it first and re-solder. If you don't have necessary tools and test instrument and can't do the job yourself, I would advise you to look for a qualified technician to isolate the problem.
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