Hd 52z585 red is backwards

 

New member
Username: Rchartra

Post Number: 1
Registered: Jun-09
The red light on my hd 52z585 red is backwards and I cannot adjust it back through the service menu. Is it a mirror problem, lamp or just ditch the T.V. Please help!!!
 

Silver Member
Username: Tvshopper

Post Number: 217
Registered: Mar-06
That is a light engine failure.
 

New member
Username: Tvtroublesolution

San Diego, California USA

Post Number: 4
Registered: Jun-09
Hi Robert,

I was looking around the web and I found this, according to an article on howstuffworks.com your JVC HD-ILA TV is based on LCOS technology, if your picture has a red background then the problem may be one of the LCOS color chips which are located inside the light engine.

This link shows you the schematic of the LCOS RPTV light engine; it shows how the light passes thru the color chips: http://www.oerlikon.com/ecomaXL/index.php?site=OPTICS_EN_lcos_rptv_light_engine

I also found that if one of the LCOS color chips has a bad driver then this could also cause the red background.

This link shows you the color chip driver:
http://tfcg.elis.ugent.be/projects/xgv0901.pdf

If you want to learn more about the LCOS projection TV, check out: http://electronics.howstuffworks.com/projection-tv2.htm

Good luck Robert.
 

Silver Member
Username: Tvshopper

Post Number: 218
Registered: Mar-06
I had the exact same problem as the OP. It was fixed with a light engine replacement. Here is a picture of it.
Upload
 

New member
Username: Rchartra

Post Number: 2
Registered: Jun-09
Thanks all:

What I was told before you was that it was caused by some IC's (from a supposed tech.). What you guys tell me is that it will be just a tad more expensive to fix than previously thought.
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