Question about Panasonic PT-50LC13 50" Rear Projection HDTV

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The picture is off.

The red and blue out line everything on the tv and we tried adjusting the lights in the back but they wont ever correctly match up.

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Sounds like you have a convergence problem with the set. Usually will need amplifiers and possibly some resistors replaced. Should be $300 or less to repair by a professional.

Posted on Jan 29, 2009

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My KP-51HW40 clicks off after running for a period. The red power light blinks when it goes off but screen stays dark. When TV is shut off for a while it restarts and runs fine. The "On"...


Hi,
KP-51HW40 shuts off due to incorrect white balance and blue arch lines is an evidence of that incorrect white balance. I hope tv standby red light would flashing 5 times then 3 seconds pause and again 5 times when tv shuts down.
This is rear projection tv that has three picture tubes (red-green-blue) inside to generate picture that projected at front screen. These three picture tubes must be drive with correct drive voltage to produce good picture of each color.
Solution for your tv problem is Screen Voltage adjustment that can be done easily if you are handy with electronics stuff repair.
Let me know your expertise level to guide you more and if you feel unconformable by tv repair then local tv repairman will help you to adjust white balance in tv.
Hope these info will help you.
Let me know if you have additional questions.
Thanks.

Nov 05, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Color was bad couldn't adjust it better , then last week red curvy lines showed up on the bottom om screen . opened the back and found 6 adjustment knobs slowly turned one and screen went dark. repowered...


sorry but those adjustment are not the right one , to correct the color problem u have frist , u need to hire a tv tech , tv would has to adjust the screen and focus back to normal after that , need to replace the oil on green and blue picture tube

Apr 12, 2010 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Red, Green convergence lines are wavy


Projection TV sets have two very common problems listed below.

Problem #1) Convergence


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Sep 16, 2009 | Akai PT4298HD Rear Projection Television

1 Answer

Lines on the screen


Are they thin, white lines running east to west? If so, they are called retrace lines and indicate that the screen settings for the picture tubes is set too high or there may be a mal-function of the CRT driver circuitry. Try adjusting the screen controls which are located behind the front grill of the TV behind an access panel. Once you remove the grill and access panel, you'll see a small control assembly the has two sets of controls. Three for adjusting the red, green, and blue focus, the other, the red, blue, and green screen controls. To adjust correctly, put the TV on an unused input(dark, blank picture) and adjust until there are no visable retrace lines or color in the image.

michtech

Feb 14, 2009 | Panasonic PT-51HX41 51" Rear Projection...

1 Answer

Rca tv r52wh73 the picture is bowed at the top and bottom also the colors red green and blue wont match together as one picture


rca t v r52wh73 the picture is bowed at the top and bottom also the colors red green and blue wont match together as one picture

Apr 05, 2008 | RCA Projection Televisions

1 Answer

43FDX15B has blue lines on the screen somtimes


Try this procedure:

Adjust the green & blue CRT screens to match the red. Go into your picture menu adjust, turn color all the way down to a black & white picture. Now adjust each CRT screen so that you end up with a true black & white picture. Then adjust each focus control to get a sharp picture, and adjust each CRT focus one at a time for clarity by covering the other two up. Then go back into picture adjust and turn color half way up, you should see a better picture.

If you cannot get the blue & green to even out to a black & white screen you have other problems such as faulty CRT card on back of tube or it could even be that the video IC is faulty. If this is the case, then you may have to get a competent local technician to check the TV and get the necessary parts replaced. It could set you back between $200-$400, depending upon how many components need replacing.

You can also try a hard reset..Unplug all cables, including power from the back of TV. Wait for 4 hrs and reconnect them. Try and see if it works now.

Hope that helps...Should you have any further questions, please feel free to post them here.

P.S. Before you assign a rating, please make sure that the issue is resolved or you are satisfied. If not, please post back as to what you did, and/or any other questions you may have, and I will try to assist you as best I can. Please do not assign an ‘Inappropriate’ or ‘Thanks for trying’ rating if your issue is not resolved after the first response itself, as sometimes a bit of to and fro dialogue may be necessary before we can find a fix or an answer to your query.

If you find that the solution/answer I provided led you to, or resulted in a fix, please close the ticket with a FixYa! or Helpful rating. I would be very grateful for your show of appreciation.

Thank you for using FIXYA!

Cheers!
IrishDruid

Jan 14, 2008 | Hitachi 43FDX15B 43" Rear Projection...

1 Answer

Screen


What you may have needed to do was adjust the green & blue crt screens to match the red. Go into your picture menu adjust, turn color all the way down to a black & white px. Now adjust each crt screen so that you end up with a true black & white px. Then adjust each focus control to get a sharp px, have your tv on a channel like the home shopping network so you can adjust each crt focus one at a time for clarity by cover the other 2 up. Then go back into picure adjust & turn color ahlf way up, you should see a better px.

Jul 01, 2007 | Philips 60P8341 60" Rear Projection...

1 Answer

Sony KP-57WS500 Pictures problem


Your Convergence Correction Amplifier ICs have gone bad (STK329-110) They must be replaced along with the biasing resistors

www.electronix.com has the parts you will need plus I would suggest that you have a qualified TV repair person do the installation for you.

Make sure the traces on the circuitboard are good and that the solder connections are good.

But the ICs and resistors need to be replaced.

Thank you,
Shuttle83

Oct 30, 2006 | Sony KP-46WT500 46" Rear Projection...

2 Answers

No picture coming from red lamp


Sounds like you have two differant problems. A red drive or red picture tube is bad and the conbvergence IC's are bad. To test the red drive disconnect the green picture tube socket BUT MAKE SURE THE SET IS UNPLUGGED!!Then remove the red socket and move over to the green tube. Then turn on the set. If you get the same out of the green then you have a drive problem that needs to be trouble shot for a bad componet. If you do get a picture with the red connected to the green then the red tube is shot. If you know how to read a schematic, get one and then you should have no problem troubleshooting the red drive and the convergence problem. If you dont then there is no easy or quick fix as this is a solid state set and there are no user replaceable parts inside this.,. Your going to need, for safetys sake, call in a trained tech to assist you with this repair

Sep 15, 2006 | Philips Magnavox 51MP392H Rear Projection...

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