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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Re: picture tube - Panasonic PT-51HX41 51" Rear Projection Television Projection Televisions

Power supply problem take to repair shop.

Posted on Jan 27, 2008

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Picture Dark with brightness at maximum

No lamp as set has 3 picture tubes. You might be able to find the access on the net to the tech mode where sub bright etc can be adjusted.

Did problem happen instantly or gradually over a period of time?

Aug 30, 2012 | Panasonic PT-47WX42 47" Rear Projection...

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...

1 Answer

We recently adopted a Akai TV model PT50DL24 and the sound and the picture is fine but very very dark. I tried adjusting contrast, colour,and brightness but remains a very dark picture. Please help!!

Tv have a word "LAMP" on it front face frame bazel?Yes,than this tv model have a projection lamp it is dying requirement of the projection lamp replacement.Tv can be save.Not no "LAMP" word on it the front bazel frame.Not repairable,because it is using CRTS-tv tubes tech.Sorry it is garbage tv time,those CRTS tubes are dying,not worth replacing and cost almost the same as a new tv itself,if u can buy it refurbish CRTS tubes anymore all.

Jun 07, 2011 | Akai PT50DL24 Television

1 Answer

Dark Picture no brightness

Sorry But your TV is Not DLP,it is projection it has 3 Tubes Red/Green/Blue Deflection Board for this
TV cost $508.35 {Encompass Parts Distrubtion} Has the Boards for this TV 1-800-638-3328

Jan 21, 2010 | Hitachi 51F59 51" HDTV Projection...

1 Answer

TV is dark

you can fix this problem. remove your tv back cover, there is a part called Flyback. attaching to picture tube. it has two probs for adjesting focus and brightness.adjust your brightness porbe.

Aug 16, 2009 | Projection Televisions

1 Answer

I have a Philips Magnavox ptv843 and it has a red tint. The picture is really dark, I can hardly see anything in dark seens. I tried to adjust the contrast and brightness but no help. Thanks

These TV's are known for polluted coolant in the picture tubes.The coolant is between the lense and the tube. The factory has a Service Bulletin about this problem and they say to change the coolant in each picture tube. This will make the TV look like it did when it was new.

Aug 02, 2009 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

RCA D52W20 Too Dark :(

you may need the tubes cleaned and setup

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

1 Answer

Sony KP-51WS510 51 in. Dark Picture

These sets have been known to have loose welds in the picture tubes. Most likely your tubes are showing this problem.

Apr 17, 2008 | Sony KP-51WS510 51" Rear Projection...

1 Answer

Colors glowing to bright

The coolant liquid ,that is inside the picture tube lenses need to be replaced. this helps to keep the internal picture tube temperature cool down. and the focus quality. the cost to replace it could be around 250.00 dependin on the tech . in repair shop 350.00 any questions Jus ask I'm glad to help you

Jun 12, 2007 | Philips 60P8341 60" Rear Projection...

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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