Question about LG RU-52SZ51D 52" Rear Projection HDTV-Ready Television
When a blue streak of light is running through the screen of your television then the problem is most likely from your main board of your television or the t-com board.
You can open up the television with the appropriate screwdriver, then assess the capacitors to see which is faulty, and if none is swollen then the problem is not from the main board.
Then replacing the t-com board will do the job.
Posted on Oct 08, 2010
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Posted on Jan 02, 2017
Had this problem fixed. It is a common problem caused by dust brought in by the fan into the projection area of the set adjoining the projector lamp.....had to be replaced .... EXPENSIVE!
Posted on Nov 21, 2007
i have the same thing with mine same brand and all the problems. i was stupied and opened it and under the the circle retrackable scope is another piece u can unscrew but dont. there is liqiud in there and it will spell all over the best thing is to take it in and spent 40.00 to look at it and 160.00 for a new tube yes a tube runs about 70.00 to 160.oo for one tube. good luck
Posted on Aug 07, 2008
SOURCE: blue streak at bottem of screen
You have the classic "blue blobs," In most of Sony's rear projection LCD's, the Optical block is bad. Manufacturer's defect. The blue panel inside of the optical block starts de-laminating (due to heat from the lamp). This is a very common problem. I have changed about 70-80 optical blocks myself over the course of about 4 years.
There is no other fix but to replace the optical block. Unfortunately, it will get worse, and will probably develop "stars," or stuck pixels, as well. You can call Sony and try to get some assistance, but the extended warranty on these sets has recently expired.
Hope this helps you in some way...
Posted on Jan 05, 2009
Tips for a great answer:
Inspect where the dark streaks are on the television. If the streaks occur at the same place on the top and bottom of the screen, they are due to the formatting of a movie or television show you are watching. This is normal. Also, if the streaks appear on the left and right of the screen, they are due to the show being filmed in full-screen instead of wide-screen. This also is normal.
Change the input setting so you are viewing the contents of a different device. If the dark streaks are gone, you know they are due to the device connected to it. However, if the dark streaks remains no matter what input the TV is connected to, the problem lies with the television.
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