Question about Toshiba 50HX81 50" Rear Projection Television

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Toshiba 50hx81 Squiglly Lines

When you first turn on the TV the top half of the screen is squiglly. After the unit warms up (2 to 3 mins) the picture is normal. This occurs on all inputs.

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  • JCannon Dec 20, 2007

    Same problem. How much to have a technician fix? TV is from 2002, is hyperboard available

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Bad hyper board = Needs rebuilt, technician skill level high....

Posted on Nov 05, 2007

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Sony pfm-42x1 flickering screen when turning tv on


OKAY I found the Problem!! Bad Caps Compositors. I Proved this in 2 ways. First I took off the Back(always make sure the TV is UNPLUG) In the photo above I put my finger on the capacitors. I found some that where NOT FLAT ON TOP(You can kinda see in the photo too). I could feel a little nipple on top.(Some times you can see if their busted open but not in this case) so I felt them and the bottom right and top left area in red in the photo where not flat. I took my dryer(My wife really) and warmed them up for about 2 minuets each then another minuet rotating back then forth. I leaned the t.v. up to lean on the frame and plug it in. I continued warming the capacitors up and in about 2 Min the T.V. has stop blinking. Much better then the 20-30 min. So the hunt for the Capacitors is on. It will be some work to get the boards out. If everything is done delicately The Soldor job is easy for me. I am going to buy the 8 but replace 1 board at a time until the TV works and put the other on the side for next time or put them up on E-bay. I hope this helped Please like if this helped you. ea0a96a3-fb82-4ec0-89f4-76b4080e9c6e.jpg 1b190ebd-5d69-4553-a009-840d29ab4c87.jpg ab9b51d0-6e1d-4cce-b822-e80d0fde9163.jpg

Oct 13, 2013 | Sony PFM-42X1 Plasma TV

1 Answer

Tv takes up to half hour to turn on


Check for swollen caps, That is a big problem

Dec 22, 2012 | Sony BRAVIA KDL-40V3000 Television

1 Answer

When we 1st turn on the tv the left half of the screen is black right down the middle of the screen,,,,then 15 mins or so it starts to slowly regain strips of color and finally it has a full picture! Then...


When tv it does have a full picture,the tv it work ok?Yes,tv it is repairable.This tv problems are only have two possible electronic boards causes.1 the tv board that call the T-CON decoders board it is dying,this board sit in the middle of the bottom of the LCD screen panel,it control and decoding all the picture dots pixels before it gose into the LCD screen panel.2 worst cases the main board the tv Tuner signal board is it dying,this board control everythings.Like it take in the outside incomming signals sources,like the tv incomming broadcasting signal cable wire and all the external electronic unit divices plug it into the tv.80-90% this tv problems it is the causes by the tv T-CON decoders board only.Tries websites like Shopjimmy.com,Ebay.com to buy a reburbish T-CON decorders board and the tv main board Tuner signal board for the replacement.

May 07, 2011 | LG 42LC2D 42 in. LCD HDTV

2 Answers

When you turn the TV on the screen splits in two,


it sounds like one of your buffer boards are going bad. these are the boards that help put the picture on the screen. there are 2 boards an upper and a lower board. if you remove one and turn the tv on you will get half a screen. see then if you get the lines. please leave rating after you check.

May 10, 2010 | Hitachi P50H401 50 in. Plasma HDTV

1 Answer

Vertical colour bars


The problem is in the LCD controller board is overheated because the power supply unit is at the bottomof the TV and the heat rises upward to the vent on the top of the TV. You can verify that is hest problrm by running TV with the back removed and have a small fan blowing on the top secdtion of the TV where the LCD controller is. This how I fixed my scrambled picture after warm up (I added heat sinks to the IC on the LCD controller board) : http://s807.photobucket.com/albums/yy352/budm/LTV-32W3HD/
You can try it if the board was not badly damaged already by the heat. My has been running great for over a month now.

Feb 04, 2010 | Westinghouse LTV-32w1 32 in. HD-Ready LCD...

1 Answer

I'm trying to improve the picture- seems to be TOO DARK- tv is 10 yr old ser3 935351541- ihave tried color adj etc


Rca Screen Control These sets have screen control adjustment usually located behind the speaker grill(pops off -velcro or press tabs) and convergence front board. There are 6 contols on a black molded assembly about 31/2"x21/2" square. adjust only the top controls marked "Screen R G B" the bottom ones are focus
Method:
-turn on set and let warm up for 30 min at least
-switch tv to blank unused video input channel
-adjust each control in turn until you see the picture glow (with the corresponding color) and slightly back off the control - repeat for each color - this will increase screen brightness and ballance your color
Hope this helped.

Oct 18, 2009 | RCA P52945 52" Rear Projection Television

1 Answer

SONY TV PICTURE TURN GREEN WITHOUT RETRACE


Picture goes to high green with retrace lines that shows picture tube is defective and requires replacement.
Usually in above symptom, TV goes to standby mode and standby light blinks when green raster problem occurred.
New TV is better option because picture tube of KV-34XBR960 would not be available any more.
Thanks.

Aug 14, 2009 | Sony Televison & Video

2 Answers

Plasma "warm up" is now up to 30 minutes and climbing


put a towel across the top of the tv so it can heat up faster and you will get your picture. be carefull!!

Jan 26, 2009 | Televison & Video

1 Answer

Model 42mf231d/17 42" plasma


If the loss of picture is either on top half or bottom half of screen. there are y buffer boards that go from top to bottom on left side of screen when looking at back that control those sections. when there is loss of half of picture then buffer associated with that area would be at fault and would need to be replaced. when i see a degrading symptom such as loss of picture on top half or bottom half leading to no picture issue normally you would check heat syncs on y sustain board and if not heating up after a few minutes of being turned on would recommend replacing y main and both y upper and lower y buffer boards as they complete a circuit

Jun 04, 2008 | Philips Magnavox 27MS343S 27" TV

1 Answer

Vertical Green/Purple Lines on lower half of screen


I would contact RCA if the repair center dosent know how to troubleshoot this set. But I bet its an eeprom or ground issue. Contact RCA here at 580-634-0151 or At https://www.rca.com/secure/service/contactrca/1,,,00.html Good Luck

Jun 15, 2006 | RCA Scenium HD65W20 65" Rear Projection...

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