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Re: how do adjust verticle picture on Hitachi 46F510
You can adjust vertical height through the service menu, but i would recomed that you trouble shoot the vertical section as its probably a solder joint , leaky diode or something that is causing the problem. Often its bad solder at the vertical output IC itself that causes that sympton.
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Not uncommon on this model as a lot issues with the red and most of them are caused by touchy master screen controls. The set has a black rectangular block with three screen and three focus controls, for whatever reasons the red screen control always seems to be the flaky one and usually a very tiny adjustment of that one does cure the problem.
Examine the screen with set on and color set to zero--stand back and look= is screen pink to red color?
If so it may be a common issue on this Hitachi.
Usually it is an adjustment inside the set of the red screen control needing to be turned just slightly down---these are known for the red control "drifting" just slightly from time to time--answer is based on model number indicated here.
All projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.
Common Problem #1) Convergence has gone out
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.
This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.
Common Symptoms include....
Screen looks 3D
Colors don't line up
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed or warped.
TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.
Common Problem #2) CRT Fluid is Cloudy
Projection TV 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 images.
there are no lamps in this set, you have picture tubes, if the tubes don't line up, you need new convergence chips, this is the most common failure in all rear projection tv's, you might also have burnt open resistors next to the convergence chips. if you don't have good soldering skills then you must have a repairman fix this.