Question about Hitachi 51F500 51" Rear Projection HDTV-Ready Television

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Shadows on my screen

Hello, I see an outline somewhat like a shadow on my screen. I have been told to open my screen and adjust the "lines"? does this sound like the right solution to my problem?

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  • k_killam Jan 31, 2008

    I was told the same thing. I looked up that part and other people said they changed it and had the same problem. I opend the front of my set. The mesh part, and played with the 6 dials under the projectors. It seems to have worked. Thanks for the help with this. Would you happen to know the tv repair companies name?



1 Answer

I have the same problem. I was told it is the convergence chip. $390 + Tax CDN (parts/Labour/Service call)

Posted on Jan 31, 2008


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Ws-65611 color shadows

You need to turn down the voltage on all 3 crt's. You have a red one, a blue one and a green one. Slowly adjust the knob down until you don't see the shadow any more. Then adjust your color in the user menu.

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Our tv has red and green shadows on the picture when words come on at the bottom of screen they look like a shadow double Peoples faces will be outlined with red and green lines

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1 Answer

Black and white negatives produce scans that show too much contrast......any suggestions?

1) Decide which problem is the worst: shadows too dark or highlights too light. 2) Run your scan with Nikon 4 software tool "Digital DEE" adjusted for EITHER Shadows or Highlights (not both; Highlights setting will "trump" a Shadows setting, even though you have a non-default setting at all DEE sliders).  Generally good choices for Shadows are 39 to 55. (39 = lighten the shadows a little; 55 = lighten the shadows a lot.) Experiment; do several scans. Generally good choices for Highlights are about 17 to 42 for amount and about 4 to 30 for threshold. (17/4 = dim the highlights a little; 42/30 = dim the highlights a lot.) Again, you have to experiment to get some experience. 3) When in Photoshop PSD format (After first doing a Levels adjustment): Try using the Adjustments/Shadows and Highlights tool to AGAIN brighten your too-dark shadows and/or tone down your highlights. (I.e., the effect is cumulative on top of your Digital DEE effect. But Digital DEE is a more "magical" feature and is somewhat preferred to PS's Shadows and Highlights tool. DEE, however, will often produce an annoying "light smear" [bright area "dragged" into an adjoining darker area]. In case of a "light smear" from DEE, do not use the tool; too hard to fix.  Use PS's Shadows & Highlights tool instead.)  4) Proceed with other PS adjustments such as Curves, etc.  5) Still not satisfied?  Go to Levels again and look at your histogram. Is it really "stacked" to one side or the other (a mountain way over at the left or at the right)? You might want to try the rather severe command of Adjustments/Equalize.  This "spreads out" your pixels more evenly across the histogram. Note: this is a scary adjustment that requires misc fixes to tone-down certain aspects of the Equalization adjustment.  No free lunch, right? 6) After experimenting with the above tools, you should be able to get a handle on too-contrasty pictures. There will be a learning curve. 

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1 Answer

Red shadows of words on screen of projection TV

you have to go into the menue, and go under video settings, under advanced, then into convergence, when you get the white lines all over the screen, follow the directions and adjust the red so it lines back up, other wise , take the front bottom panel off the tv, look for the 6 little nobs, look at the ones on the left, they should agjust the red, thrn the top one untill the red is focused back in.

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Mitsubishi rear projection tv

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Red shadows around images on screen, setting convergence doesn't help

HELLO. it not in adjusting the len's it's in the convergance board. the IC'S ON THE BOARD NEED TO BE REPLACED."GOOD LUCK"

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1 Answer

Blue shadows

yes its the problem of convergence
and for reaar idea of what to replace on the main board and how to replace and how the components look and what is called what and what tools you require to do it yourself and how to fix it

please check the above link by clicking it

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1 Answer

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