Question about Projection Televisions
my tv was bought in Aug 2004. it was working fine, until today... when i open the tv, the blue power is on and the 2 red lights next to the power button r flasing, however, after 5 minutes, the screen is still black and no sounds at all. can anybody give me the answer?
Posted on Jan 04, 2008
SOURCE: TV issue
There are many causes for spots on top of an LCD rear projection tv, you are probably in the first two cases, both require part replacements and repair job.
If the spots are faint blue, green or pink shadows, then it can be a problem with the anti polarization panel placed on top of the LCD.
Similar spots (colored shadows) may be caused by a problem with the light engine, in that case the fix will be expensive.
If the spots are bright lights, like an aura, that is a problem with the color wheel.
Problems on the light tunnel can cause static gray shadows.
If the spots are static dark stains than that is lcd liquid, the LCD panel must be replaced.
Posted on Oct 15, 2008
SOURCE: I have a Hitachi 50V500A
This is a very common problem with your model. My best advice is to have a hitatchi authorized service center come out and give you an estimate then call Hitachi and complain to them about the problem. They will useually supply the part for free and you will only have to pay labor to put it in. A good shop will run you $300-$400 to put it in for you.
Posted on Oct 28, 2008
If the convergence is off more than 1/2 inch or so you can't adjust. you have a failure of hardware. most likely the output IC. This set has 2 outputs for convergence. Each output contains 3 circuits, Six circuits altogether 2 red ,2 blue and 2 green. The normal customer adjustment will only alow adjustment of blue and red. They should be converged onto the green. There is a much more complex adjustment in the service mode for Geometry and convergence. These adjustments are only needed when you replace a failed componnent like the output ic. These ICs have been upgraded several times since the production of this set. The latest and most powerfull version is STK394-160. If feel up to it I suggest changing both outputs and the corresponding output resistors. Then do a complete geometry and convergence alignment.
Posted on Apr 16, 2009
Tips for a great answer:
Aug 31, 2011 | Hitachi Projection Televisions
Dec 24, 2010 | Hitachi UltraVision CineForm 55VG825 55"...
Feb 01, 2010 | Projection Televisions
Nov 30, 2009 | Projection Televisions
Apr 30, 2009 | Projection Televisions
Oct 28, 2008 | Projection Televisions
93 people viewed this question
Usually answered in minutes!