Question about Sharp Aquos Lc-40c37u 37" 720p Lcd Flat-panel Hdtv

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Screen periodically blacks out. Usually if I scroll through the input settings, it will come back on. This last time, it wouldn't work. I didn't use the tv for 24 hrs & when I turned it on it worked. What is the problem?

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Nothing is on at all

Posted on Oct 13, 2013

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Posted on Jan 02, 2017

  • 8457 Answers

SOURCE: I cannot watch cable TV on Input 1 when Input 2 is activated.

Tries to reset the tv Tuner board back to factory setting.By go into the tv menu.Go to PICTURE,go down to reset the Tuner board.All the HDMI ports should work now.Not,than the HDMI port 2 is shorted and dead,don't used the HDMI port 2.The tv should work fine,or tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Tuner board for the replacement.

Posted on Jun 16, 2010

fosg2000
  • 229 Answers

SOURCE: sharp tv keeps changing the source channel on its own

you may fave a faulty switch in the key controller, may best advice is replace it


Part numbers:
KC792
XC792WJ


Fred

Posted on Jun 18, 2012

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1 Answer

Screen goes black unless it's on charge, even though it's fully charged


Right click on the battery icon in the taskbar (Normally located near the clock, bottom right corner of the screen).

In the sub-menu that pops up, select "Power Options".

Next to the power plan you are running, to the right of it, click on "Change plan settings".

Scroll down to and click on "Display" and you will see the computers setting options for both "On battery" and "Plugged in" with the screen turn off time in drop down boxes.

You need to select what time the screen turns off in when no user input is detected for that time. I usually select 5 mins for battery.

Hope this helps, and wishing you a Merry Christmas. ;)

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1 Answer

Screen goes black unless the comuter is on charge, although it's fully charged


Right click on the battery icon in the taskbar (Normally located near he clock, bottom right corner of the screen).

In the sub-menu that pops up, select "Power Options".

Next to the power plan you are running, to the right of it, click on "Change plan settings".

Scroll down to and click on "Display" and you will see the computers setting options for both "On battery" and "Plugged in" with the screen turn off time in drop down boxes.

You need to select what time the screen turns off in when no user input is detected for that time. I usually select 5 mins for battery.

Hope this helps, and wishing you a Merry Christmas. ;)

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Have you unplugged this set for any period of time? Many of their older sets had a soft restore Menu, 1,2,3 enter which may or may not work for this set-----if fails check with Mitsubishi to see if the set has a reset or restore(usually done with the remote) that puts the set back to new in the box setting wise.

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Try changing your input choices until you get a picture. This usually means that the tv is on and functioning properly but the input method you have chosen is not the right one. what I mean by input choices are aux, cable, input one or two ect. check to see where the antenna is connected to your tv by which input method you are using on the back of the tv. Then change that input method to match by clicking the button on the remote that changes it.

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After the tv is turned on it turns off 3 or 4 times after turning it back on and the screen turns blue for a few minutes before becoming clear. It lasts longer each day.


Many of these sets had problems with bad picture Tubes--they use a red, green and blue crt. Most commonly the blue gives troubles--The tubes are now only available on a rebuild basis--usually not worth doing as the cost is very high.

You may have a bad blue picture tube but there is a way to deal with this first----the set has a black plastic block with six controls---three are Focus(red,green,blue) the other 3 controls are Screen controls(red, green, blue)

Someone has to remove the entire piece on the front of the set below the screen(usually a plastic part) most of the time it is secured with 3 screws on either side of the set in the back; once you remove the screws the entire piece should pull out(pull from right to left(it will not fall off or come out easy--it is held in with several large plastic pegs) With it removed there is an inspection plate with 4 screws-----the screen/focus block is behind it.

You need to look very closely at the block to identify the focus versus screen controls----one row left to right will be marked Focus and the other row left to right will be marked screen------YOU need to locate the Blue Screen control (they are black like the block) With the set on(be careful) go to a video input clip_image001.gif with nothing connected---if you see a blue screen as well as the input number turn the BLUE SCREEN CONTROL SLOWLY TO THE LEFT UNTIL THE BLUE is gone.

If this cures the problem you may only be buying yourself some time----if the blue picture tube is bad sooner or later this trouble may return----I have seen sets where this was adjusted and the set worked for a year or more with no repeat of the trouble----replacing the blue tube would likely cost you 400 -500 parts and labor.

I do this here for free so if this has helped you rate this solution.


SD TECH

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1 Answer

Hitachi 53fdx20b picture is red


This is a set first made in 2002. I have seen a few of them with too much red.

Most likely what is wrong is the RED SCREEN CONTROL. It is located behind the front grill assembly at the front of the set. Screws usually secure it from the back on either side and then it pulls off--held by pegs usually.

Behind it is an inspection plate with several screws. Behind that is a BLACK block about 3 inches square with six controls(everything is black) One row of three will be marked FOCUS--stay away from those. The other row will be marked SCREEN.

With a flashlight you will have to look closely at the two rows of controls--they will have r,g,b marked next to them. (red, green, blue)

If you go to a Black and white program and the background is redish etc--take the set to a unused Video input2_bing.gif and after you locate the RED SCREEN CONTROL turn it slowly (less than 1/8 of a turn) to the left---the idea is to adjust just until the screen does not show red---on a blank input it should be black.

Double check it on a Black and White program and then if it was the problem the color should now be normal.

These sets did have some problems with that Screen /Focus block going bad--the entire block costs under 25 dollars and all the wires on the back of it plug in; if you have to keep adjusting it over a short period of time replace it or live with it.

I do this here for free so if this has helped you rate this solution as I do this here for Free.

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1 Answer

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This is a set first made in 2005. I have seen a few of them with too much red.

Most likely what was adjusted is the RED SCREEN CONTROL. It is located behind the front grill assembly at the front of the set. Screws usually secure it from the back on either side and then it pulls off--held by pegs usually.

Behind it is an inspection plate with several screws. Behind that is a BLACK block about 3 inches square with six controls(everything is black) One row of three will be marked FOCUS--stay away from those. The other row will be marked SCREEN.

With a flashlight you will have to look closely at the two rows of controls--they will have r,g,b marked next to them. (red, green, blue)

If you go to a Black and white program and the background is redish etc--take the set to a unused Video input and after you locate the RED SCREEN CONTROL turn it slowly (less than 1/8 of a turn) to the left---the idea is to adjust just until the screen does not show red---on a blank input it should be black.

Double check it on a Black and White program and then if it was the problem the color should now be normal.

These sets did have some problems with that Screen /Focus block going bad--the entire block costs under 25 dollars and all the wires on the back of it plug in; if you have to keep adjusting it over a short period of time replace it or live with it.

I do this here for free so if this has helped you rate this solution as I do this here for Free.

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I called Firedog and paid them $80 to come out and fix it.

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