Question about Panasonic PT-51HX41 51" Rear Projection Television

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Picture tube is dark and i cannot get it bright by using the remote

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Power supply problem take to repair shop.

Posted on Jan 27, 2008


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Brightness adjustment

There will be a control panel on the TV, usually on the side of the TV. You can use these buttons to enter the menu and adjust picture brightness. You can find an inexpensive universal remote easily.

Nov 04, 2013 | Sharp Aquos Televison & Video

1 Answer

I have an old Orion TV134R . The picture is so dark on it that I need night-vision goggles to watch it . How can I brighten it up? I don't have the original remote control. Thank you.

how about in the menu button you can not get an adjustment in brightness control. if the display in the screen is too dark either in any channel or even watching a movie from an input source like dvd player, then i may say that the picture tube need now replacement.

Aug 12, 2012 | Televison & Video

2 Answers

I have a phillip magnavox big screen tv it works fine but the color is too dark i think i need a picture tube

If its the one indicated here or one like it :

The picture tube type (CRT) rear projection tubes require annual cleaning.

With set off and back removed locate the three large black lens atop the chassis--hard to miss them.

The are the red, green, and blue tubes and are your light source for the picture---------if dark and they are dirty or dusty the picture will be darker and not as sharp or clear as it once was..

spray some glass cleaner on a paper towel and wipe them clean.

Do not touch anything else in set and do it with set unplugged.

put back cover on and see if picture is noticeably improved; if so do it once a year or more if in a dusty place.

Let me know if you have questions.

Mar 16, 2012 | Philips Magnavox 51MP392H Rear Projection...

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Hi Guys, I have a JVC 32T55EKS TV & the picture is overly dark. When the picture goes through the set-top box the picture gets even darker. The brightness is turned up fully & I have accessed the...

U turn on the contrast level to the max,if still not watchable,tv cathoray tube is dying,radiaton is disappearing.Time to buy another tv.

Feb 14, 2011 | JVC AV-27230 27" TV

1 Answer

My 21 inches lg tv produces sound but a very dark

Check resistors in the small PCB connected to picture tube. Check picture tube grid voltages. Check brightness control swing on the IC out put. Note down the IC no and search in the Google for pin configuration.

Jul 06, 2010 | Televison & Video

1 Answer

RCA D52W20 Too Dark :(

you may need the tubes cleaned and setup

Jan 29, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

2 Answers

Picture is dark

Does not seem like a bad tube alone. Could also be that the Video output Transistors Supply Filter capacitor having dried out. It is a 100mfd 160V capacitor, which on replacement will improve the brightness of the immage. And yes, you could also try increasing the heater voltage (Filament Voltage)of the Pictuire tube, this will definitely increase brightness, but will reduce the life of the Picture tube. You gotta think - 10 year old TV, should I repair or exchange and get a new one???

Mar 03, 2007 | Zenith Z27X22D 27" TV

1 Answer

Darkening tv picture

The Picture tubes(not bulbs) do and probably are weak. There replace should only be done by a trained service person. One reason would be the hI Voltage issues related to the crt's, as these tubes store alot of HI voltage even after its unplugged for a while, and another reason would be that these tube can very easy implode then explode and that wouldnt be a pretty sight. Third would be the alighnment involved after all three tubes are replace. There ba cross hatch generator and alot of time involved with the alighnment. Please seek a pro to assit you when your ready to spend at least 900 TO 1000 bucks. Good Luck

Jun 30, 2006 | Hitachi 53FDX20B 53" Rear Projection...

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