Question about Hitachi 53UWX10B 53" Rear Projection Television

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53UWX10B Hi, I have replaced the ICs several times(110s), first with 120s, then back to the original 110s and RK50 bad, work for awhile though pix was very dark, then started chirping/flashing pwr LED. After replacing the 110s(original) with 120s I noticed a sound similar to letting the air out of a tire, this lasted for 5 to 10 secs or so, I replaced the ICs a second time(120s back to 110s) and all 6 resistors as RK58 3.9 was open, the result was a solid pwr LED, and all 6 LEDs, 4 green and 1 red on center deflection board, and the green LED on the pwr supply board. This is when you told me to check for bad wire connections, which got my dark pic back, I thought maybe the screen/focus would get a brighter pix, I touched the red focus VR instead of the screen and the set instantly started chirping again. 3rd IC replacment(110s) worked for awhile with dark pic, then started chirping/flashing pwr LED.

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Good Day, Butchilee,
Sounds like you have patience, hope your TV has some trace left. Hit recommends that you replace the originals with
STK-392-150's and the resistors. Replace said items with care then back down on the screen/ focus controls and gradually bring the screens up until you have pic, adjust focus. Go into customer menu and adjust color down, set brightness to 50%, contrast to 100%. Then go back and adjust the screens for proper, black/white, tracking. AND It's best to double check the soldering connections.
Good Luck, Big Irish.

Posted on Jul 09, 2008

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