JVC AV-27D303 27" TV Logo

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jes jes Posted on Sep 08, 2006
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Dark picture The picture has gotten so dark that it is very hard to see. None of the adjustments on the menu seem to work. This problem started about a month ago but by adjusting the brightness the picture was watchable. No more. Thanks, Jes

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  • Expert 275 Answers
  • Posted on Sep 08, 2006
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Joined: Jun 26, 2006
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How old is the TV? More than 6-7 yrs? Then it's time to do a trade in. But if you are very attached to it, get a Technician to recondition the Picture Tube. This may give it life for another couple of years. You could also ask a technician to check the DC filter Capacitor for the HT line to the Video Drive circuits. Over time this capacitor dries out and also causes a darkening of the picture. It is normaslly a 100 mfd 160V capacitor.

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Westinghouse WD55UW4620 no picture

Before you replace the power board, there are a few things you can try to troubleshoot the issue with your Westinghouse WD55UW4620 TV:
  1. Adjust the picture settings: It's possible that the picture settings on your TV have been accidentally adjusted, resulting in a dark picture. Try going into the TV's menu and adjusting the brightness, contrast, and other picture settings to see if that helps.
  2. Check the backlight: The backlight is responsible for illuminating the pixels on your TV screen, and if it's not working properly, it can result in a dark or dim picture. You can check the backlight by shining a flashlight on the screen and seeing if you can make out any images. If you can see images, then the backlight is likely the issue.
  3. Check the cables: Make sure that all the cables connecting your TV to external devices are securely plugged in and not damaged.
If none of these troubleshooting steps work, then it's possible that the power board is the issue. In that case, replacing the power board may fix the problem.
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I have a Dark picture, so it is hard to see Darker scenes...Can I or How can I Adjust...?

Yes you can. Go into your menu system, picture adjustments, and adjust the brightness level.
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My mitsubishi 72 inch tv has gotten a very dark picture. What can I do to fix this?

adjust the color go to the menu and change the color meter to darker or lighter and your welcome
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This set like most of these has 3 hidden Menu's=

1. Adjustments (stay out of that one)
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3. Option Menu**************

It will not correct the convergence circuit problem as those adjustments are stored in the Digital Convergence unit on the main board.

What it will do is a hard reset of the TV---everything back to factory original--can cure odd issues: no sound, video issues, you name it.

If you want I have found a site that has this for each of these sets--IT CAN ONLY BE DONE WITH THE ORIGINAL MITSUBISHI REMOTE.

I can get you a link to the site and manual for this set--since I never trust certain sites I do not download that manual but you can look at every page and copy paste to your computer the information needed for the OPTION menu and how to do it----stay out of adjustment menu as one wrong move and poof!

use the make a comment button to let me know what you want to do and I will help.
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try going into the menu and boosting the brightness.
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I have the same problem. I was able to temorarily fix the issue by taking the back cover off and blowing all of the dust out. But this only worked for two days. Now the problem is back. Did you fix the issue with your tv? Thanks.
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Picture getting dark

My jvc 27" tv was so dark I could hardly see any night scenes, even with the bright all the way on. If you push the sleep button, let go, then hold down the video and display (together), the service menu will come on. Scroll down to #7 (too dark) and adjust the brightness there. Works immediately. Good luck.
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sitnlisten - yes it does appear your pix tube is getting weak,but we may be able to turn up the flyback alittle to brighten up the picture.If you take the back off you will see the flyback-large black unit with a wire going to the round rubber cap on the back of the pix tube.Look at the flyback there are usually 2 adjusters one marked focus the other screen,just turn up the screen a little bit at a time.If you turn this up too much you will wind up with retrace lines on the screen.You may also want to check the pcboard ass'y for a sub bright adjust,and same thing small adjustments.If this don't help your pix tube may be too far gone.I hope this helps. cooltek Feb.1/08
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use the advanced options page and reset the factor blue and red convergence defaults then do re apply the auto color defaults color at first it seemed very red (which is good because red was the missing factor in the green picture) but after reseting all the color and tints to the normal ranges I then reset the color auto correct again and all seems fine.
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Hi there!
The knobs you refer to, are those perhaps the knobs on the board or knobs on the flyback transformer? None of these knobs should be turned. They are preset to the factory standard and if a fault occurs the fault should be addressed, not adjustments to pots. I would suggest checking all the caps in the power supply, Line stage and video section. It may also be the video processor(in the area of the tuner section). Check for caps which are rounded at the top. This is common for dark picture. Please note: There is on average about 15000V running through a TV when switched on, please be careful and unplug when changing components or refer to a repair technician. Good Luck, Jus004
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