Question about Zenith B25A02Z TV

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Tv still dim after adjusting

When I turned my tv on after an electrical storm the picture was very dark, I went to the menu and adjusted the brightness, the picture was dim and out of focus.

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Re: tv still dim after adjusting

Sounds like you may have gotten a pwer surge and blew out the regulator in the set. If you know how to trouble shoot regulator curcuitds then it could be as simple as the str type regulator. If you dont then open the set and see what module the set has it would start with a 9-something as it should be inside the back cover and then contact and see what they charge to repair the entire pcb or the exchange of the module. As Zenith sets are made to be repaired in house by quilifyed repair stations IN hOUSE. Good luck to ya.

Posted on Apr 27, 2006

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Some channels on my tv are dark and tinted orange, I used the menu button to display the menue and scrolled down to picture but I did not know how to select picture.

Adjust colour control to zero, and check for a pure black/white picture. Adjust contrast and brightness control to minimum and check whether the picture goes completly off or a slight picture prevails. If the picture goes out when you turn down brightness control to 1/3 position, that is about 20 points, your TVs screen voltage is very low, and it can be adjustable. If the picture does not go out and more brightness prevails, screen voltage is high. If the screen voltage is high, there will be some fine lines across the screen at about an inch apart; on the whole screen from top to bottom.
Screen voltage adjustment is critical for the clarity of the picture. If it is low, no proper colour will be dispayed. If it is high, it is harmful to both picture tube and your eyes.
Never try to adjust it without proper knowledge about it. The screen control can be located alongwith the LOT [Line Output Transformer], of your tv. There will have two adjustable controls there, one is for Focus, and the other is for Screen. Both are interactive, that is adjusting one will effect an other.

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1 Answer

Dark picture cannot be adjusted. I use the menu. Go to picture. Adjust the "lines" TV does not respond

try you contrast and brightness levels, if that doesnt work maybe your AV jacks arent all the way connected, check your connections on the back of the tv

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I have a JVC tv only 1 year old and the picture is getting dark.

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The Contrast and Brightness on tv appears to be dark.

If this is a CRT-based TV and it's been played most of the time, you may have a bad picture tube, especially if strong red colors bleed to the right. CRT's dim with use, unlike LCD or plasma. But it could also be trouble in the video circuits - none of this falls into the DIY category, unfortunately. High voltage involved, unless you're comfortable around it and want to try turning up the screen controls inside the TV. If you do, let me know - but "no response at all" from the external adjustments points to a more serious problem.

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Picture is too dark

How many years is your TV now? Usually TV has its life span, there comes a time that it happens. And need to look for a technicians, cause some of theme can still be repair by adjusting the brightness inside your TV.

Oct 19, 2008 | JVC AV-27530 27" TV

1 Answer

Picture very dark

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1 Answer

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Aug 01, 2008 | JVC AV-27D302 27" TV

1 Answer

No picture

you may have turned down the screen control
It is the lower one on the flyback transformer
Just advance it enough to get the pix back. If you advance it too much it may get retrace lines in the pix or shut down.
turn very slowly.
Thanks Guy

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Fixing Tilt



Apr 24, 2008 | Panasonic CT-27SX11 27" TV

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Picture is dark

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

Feb 14, 2008 | Zenith C27A24T 27" TV

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