Question about Hitachi 51F59 51" HDTV Projection Television
Our Hitachi 51F59A rear projection screen television is 12 1/2 months old. While we were watching a program, the picture turned very dark and a blue color took effect. All program viewing is now dark similar to when the brighness is turned very low and the color within the picture is blue.
What could the problem be and will Hitachi back up the product?
The 51F59 is notorious for this problem. The pins on the RGB tubes tarnish over time and the connection starts failing, leading to a dimmer picture. To fix the problem, unplug the set. Remove the bottom panel by carefully flexing the outside edges on either side to pop it out of the connectors. Once removed, loosen the top left and right screws holding the center press-board cover in place, then remove the other screws completely. Lift the cover and remove it. Within the chassis the RGB tubes are visible. At the base of each is a circuit board with the tube socket, plugged into the tube, held in place with a clamp. On each tube, loosen the clamp screw then gently pull the circuit board/socket downward to remove it. Gently clean the pins on the tube with a soft cloth and rubbing alcohol, being careful not to bend them. Then re-install the board until firmly seated in the socket, and remove the board. This should be repeated a couple of times to insure the pins and socket connectors are free of tarnish. Finally, re-tighten the clamp and move on to the next tube. When finished, replace everything in reverse order.
Posted on Dec 29, 2015
Could be the blue CRT shorting out. I had the same problem but with red. Eventually it shorted out completely. If it is only 2.5 month old it should still be under warranty and they will fix it.
Posted on Feb 27, 2008
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Posted on Jan 02, 2017
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