Question about JVC HD-52Z575 52" Rear Projection HDTV-Ready Television
Screen shows blue and yellow separated. Looks like shadows on opposite sides of screen. Replaced lamp and it worked for a day or two and then stopped. Any suggestions?
Look in the owners manual for the directions on how to remove the lamp. Your model the lamp goes in from the front on the left looking at the TV. There is a thumb screw in the back on the corner holding the left front speaker on. Under the panel there is another thumb screw holding the lamp door on. You will need a Phillips screw driver to remove the lamp. You will most likely find that the lamp is bad. You will either have to order a lamp directly from JVC, a service center or a parts distributor.
Posted on May 11, 2008
You both will need to have a service center come out to try to reset the TV using the reset jig. A JVC authorized service center will be the only ones that will have access to and training to use this jig. It is a good chance reseting it fix the color problem but it could also be something more serious.
Posted on May 11, 2008
SOURCE: jvc 65 inch I'art tv
When A REAR PROJECTION TV has coloured outlines or a 3D
image the Convergence Circuits most likely need attention.
Replacing the output amplifiers (located within the Convergence IC's) allows the pictures to line up correctly, and no more color outlines.
This is the most common fault in all makes of rear projection TVs.
Some models of TV require major disassembly and considerable shop/manufacturer's support to repair because of their design that causes other power supply or vertical deflection problems. The poorly designed products require a "bench" repair that can typically cost from $350 t0 $700.
Some TVs are designed for on-site repair and have more reliable circuit design that does not usually cause damage to other parts of the TV when convergence chips fail. The ones that usually allow reliable on-site repair are JVC, Samsung and Hitachi.
It is normal to have some resistors in the circuit burn up or increase in value from the heat (from 2.2 ohms to 5 or 10 ohms). These resistors must be replaced with the right value or the chip may fail again.
This is not a simple repair like changing batteries or a fuse. Reading through the other posts shows many that try and end up with bigger problems.
Your JVC uses STK 392-110 IC's. Misinformed people replace the IC's with other "new and improved" IC's, like STK 392-150. These are devices with different characteristics and require different value resistors in the circuit. Replacing with the STK 392-150 will cause overheating of the resistors and a damaged IC.
If you are in Calgary, I can help. If not, get someone that has experience working on your JVC. My website is below with some costs and explanation.
Posted on Jul 07, 2008
we found that it is an auto shut off system on the TV due to over heating. The lamp, if not cooled correctly shuts down. We added a mini fan in the back and it seems to work fine now.
Posted on Jan 25, 2009
Ballast Board? it is what Powers Lamp, or CK Lamp Fan if it stops running and is not Keeping Lamp Cool
set is designed to shut off to Protect lamp from being burted up, you could have either Bad Ballast Board or Defective Lamp Fan,there is a few test you can do to see which Part is Bad.
Posted on Jan 25, 2010
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