Question about Hitachi 57S700 57" Rear Projection HDTV
Go to a channel that is in black and white and turn color all the way off.
Screen should be a black and white or gray color.
If green there is a fairly easy way to adjust--let me know what you find and I will tell you how to attempt the adjustments.
Posted on Feb 19, 2012
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Posted on Jan 02, 2017
SOURCE: 50V715 HITACHI -GREENISH TINT -
Solution for the Hitachi 50V715. I contacted Hitachi and they told me there is a problem with the color engine with this and other Hitachi models. They will replace the part for free, but first I need to take it to a repair shop to verify the problem and I have to pay labor. Not too bad considering the cost of the engine.
Posted on Feb 27, 2009
Most likely this set has bad convergence ic's and some open resistors. This is a common problem for projection tv's.
resistors RK42, RK46,
RK50, RK54, RK58, RK62
Output STKs IK04, IK05.
I hope this helps. Thanks for using fixya.
Posted on Jan 14, 2010
Below are two of the most common problems encountered with projection TV sets.
Problem #1 - CONVERGENCE PROBLEM
Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.
Convergence problems are very common on all Projection TV sets including Sony, Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit from the link below.
Common Symptoms include....
Here is a quick test....
Using your original remote go-to the settings menu then goto the convergence section.
Try to adjust the red and then the blue convergence.
You should be able to move RED and BLUE in all directions - up, down, left, and right.
If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.
Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a solution
You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from TvRepairKits.com
Their kits include a step by step instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.
Problem #2 CRT Fluid is Cloudy
Projection tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around video.
Pic of a set that needs the fluid changed. Notice how dull the colors are and how white the screen looks. The screen may also look red, orange, dull, etc.
Set after fluid change. Notice how bright the colors are now. Everthing looks crisp and sharp again.
Solution #2 - CRT FLUID FIX
What you will need to do is replace the coolant and clean the crt. You can get a repair kit from TvRepairKits.com . It includes replacement coolant,step by step instructions, support, etc.
Posted on Mar 19, 2010
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