Question about Hitachi 57F500 57" Rear Projection HDTV-Ready Television

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It seems the my hitachi 57F710S overscan is bad

My hitachi tv overscan was very acceptable when i first got it, but after moving a couple of times it seems that the overscan has gotten really bad and lost its sharpness too, is there any way i can fix either of those problems. thank you for your help ,if you fix this, that would be amazing.

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wyoed1
  • 211 Answers

SOURCE: hitachi 57f710s

Sounds like a video board problem. May also be the convergence board. You might get some freeze spray ( a component cooler that comes in a spray can ) and while the set is on, spray the boards and see if the problem temperarly corrects. This is to isolate the problem. Once the problem is isolated, you can change the bad component. Good Luck
Ed
NC Electronic
Mills, Wyoming

Posted on Jan 06, 2008

wyoed1
  • 211 Answers

SOURCE: hitachi 57f500

You may have a bad convergance chip, a bad CRT( picture tube ), CRT Board ( board pluged into the picture tube),or a bad video chip. Although this is somwhat a common problem on this model of set, I have found many different fixes. Sorry I can't be of more help. Good Luck
Ed
NC Electronic
Mills, Wyoming

Posted on Jan 06, 2008

ladywinn
  • 5138 Answers

SOURCE: My Hitachi 57F710s Projection TV has no, picture,

Replace Both of your STK ICs /IF STK392-110s use 180s.

Posted on Aug 06, 2009

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Repaired the convergence and now the image quality is good but the TV seems to be over projecting the screen. The top, bottom and sides of the image are cut off slightly. is there a way to adjust?


Hey! its me again. I think what your experiencing is called overscan. This website might help but if not just google how to fix overscan on a projection tv.
http://www.cnet.com/news/overscan-youre-not-seeing-the-whole-picture-on-your-tv/

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Convergence should be found in the setup or video menu.

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Overscan is a staple in all CRT triple gun RPTV tech. It has to be taken in, if you want to see all of the picture possible in this medium. On ceiling mount front projection they have equipped them with all they need, they didn't need to do overscan, but with RPTVs this was not possible at the given price points. Overscan was necessary, to hide all the flaws out there at the edges, and they could not afford to pay their factory calibration techs to do it right, at the price points of the RPTV marketplace.

Unfortunately, when you take in that overscan, the picture gets hosed beyond belief, and then needs to be completely redone. It takes several hours and has quite a learning curve, a different one for each brand.

It is always available in my calibrations on all brands, but as an extra, at extra fees, to cover the extra time and experience/expertise required.


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................................T.

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Try the auto convergence feature of the TV. Press the button on the front of the tv and wait about 5 minutes....

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