Question about Philips 50P8341 50" Rear Projection Television

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I was on the inside of the tv trying to adjust the color and now a line comes down the screen. How do I remove it?

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Well if you are inside you would be famous or dead
jokes apart you may have switched the switch to adjust mode or vertical as you usually do this to check if the tv is ok and to install video
you do this in video to make sure it is ok and tuned to tv set
restep what tou have done and undo this you will locate the switch
if it continues than you will have to readjust tv set and reprogram it
not sure if line is black and without visual or with oicture on as you did not state this

Posted on Sep 27, 2009

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1 Answer

Picture red can not fix


Step 1:

The problem you have is the grayscale tracking needs to be reset.
First, This looks like a philips tv. In order to set the grayscale tracking remove the back of the set. There should be rectangular shaped box that is marked screen and focus on it with 6 knobs coming out of it.

Step 2:

NOTE: DO NOT TOUCH ANYTHING INSIDE THE SET-YOU WITH BE SHOCKED! WITH THE TV TURNED ON, WITH THE REMOTE, TURN DOWN THE COLOR TO ZERO. ON THE CONTROLS I PREVIOUSLY MMENTIONED, THERE ARE RED,GREEN AND BLUE ADJUSTMENT POTS.

Step 3:

TRY TURNING DOWN THE RED UNTIL YOU SEE A NORMAL GRAY PICTURE. YOU MAY HAVE TO ADD MORE GREEN OR BLUE AS NEEDED. IF THIS DOESNT LOOK RIGHT ,TURN ALL 3 R.G ANDB ALL THE WAY DOWN, THEN ADJUST THEM UNTIL THE COLOR IS JUST APPEARING ON THE SCREEN, MAKE THE PICTURE AS GRAY AS POSSIBLE. iF THIS DOESNT WORK,YOU WILL NEED A SERVICE PERSON TO REPAIR YOUR TV.

Jan 20, 2013 | Televison & Video

1 Answer

My Sony KP-57WS500 TV has curved horizontal white lines. You only see them when there is something dark on the screen. Any ideas?


You have 3 CRTs inside of your TV that create image. Blue, Green and Red. Looks like one of them need adjustment due aging.
Remove front grille. Than remove center "shielding" piece held by 4-5 screws. Behind this cover you will find little black plastic box that have 6 rotating buttons on it. Take you time to study them. There is three columns and two rows. Columns represent color, rows - "Focus" or "Screen". You need to locate "Screen" row of three rotating buttons. They will be marked "B', "G", and "R" for colors accordingly. Turn on TV let it warm up and try to figure out witch color is dominating others on your screen. Then carefully turn rotating adjuster counterclockwise using Philips screwdriver. Try to muscle-remember original position of screwdriver so you can turn it back to it.
Eventually you will find the right one, you will see lines dissapear when you reduce voltage and reappear when you turn rotating shaft back. Sometimes more than one have to be adjusted.
Try to have all three color to be present and visible but with no over saturating and no horizontal lines.
Put cover and grill back - and that's should do it!
Regards.
Russ.

Apr 06, 2010 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Color projection tv


Adjust the top left knob back down till the color comes back

Feb 25, 2010 | Philips Televison & Video

2 Answers

Screen fades to blue.


The Blue SCREEN setting is too high. These adjustments are located inside the TV behind the front panel. There are two screws behind covers and then a wooden panel to remove to access the adjustments. The leftmost set are for BLUE, the middle are GREEN, and the right are RED. The top row are FOCUS and the bottom are SCREEN. Focus will focus/unfocus the tube and Screen will adjust the power of that tube (there are 3 tubes, one for each color). If Screen is adjusted too high, horizontal lines will appear (my TV had red lines, but I played around with the knobs and saw that it could happen on any of the colors). Additionally, if SCREEN is set even higher than that, the tube could go so high that it turns the whole screen that color (in your case, blue). If this happens the TV will shut down, probably due to either overheating or overvolting. To fix this issue, turn the appropriate SCREEN dial down until the lines go away. In your case, you want to turn the lower left dial down. Don't turn it too far down, if you turn it more than necessary the TV can give you an AKB error (noted by the STANDBY light flashing a sequence of 5 blinks).

Apr 02, 2009 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Sony, tv comes on color fine, then turns red


I had the same problem with my TV, but the hue was blue. I was told that not only did I have to replace the picture tube that wasn't staying on, but I would have to replace them all because they would not mix properly. After much investigation, I found that there is an adjustment for a variable power supply to each tube that can brighten and lighten each tube. I adjusted the RED pot and my picture color issue was resolved! To access this adjustment you must remove the front panel on the TV. At the bottom corners there are two small screw covers that you must remove. Then un-screw the screws under the covers. Then pull the front panel off of the TV, (it hooks under the top near the screen so it will swing out from the bottom). Now remove the wooden panel in the center, (four screws). The pot adjustments are at the bottom of the TV. They are marked for Red, Blue, and Green. They are extremely sensitive, don't turn them much! If you over adjust you will get red, green, or blue lines on your screen. Adjust back down to remove these, (this is also the remedy for removing these lines that can appear over time). Good Luck and God Bless!

Mar 17, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

I have a KP-65WV700 and the screen looks a lil to green


OK, I'm the guy that was having the same problem, but had a blue tint to the screen. I also had blue lines running across the screen, and when I followed the steps below that were posted by another user not only did the lines disappear, but the blue haze vanished as well. My tv looks like it's new again, so you may want to try this:

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I have fixed this several times on my KP 65WV700

As Slinteriors posted if it is a thin curved line you need to adjust the screen control, it's sorta like a brightness for each color, and if one color is too high it will produce a thin curved line.

The best way I have found to get to the controls is by removing the lower grey speaker cover front the front of the TV. There are 6 screws if i remember, 3 on each side. Then it snaps off, seems like its going to break but you have to pop it off pretty good.

Once its loose you have to remove a cardboard like cover plate in the center that will give you access to the small controller board.

Now be very careful while experimenting on which knob controls which colors. Turn them very slow, if you turn to fast you will cause your TV to shut down. If this happens, turn the adjustment back to original spot and turn TV back on and take it slow.

Adjust the correct color until the line just goes away. Its easiest to do this with a black screen.

Nov 18, 2008 | Sony KP-65WV700 65" Rear Projection HDTV

1 Answer

Setting color and focus inside case


The only way to do that is by eye. To Adjust the screen controls the best thing to do is turn them all down then slowly adjust one up until you get retrace lines (arched lines across the tv) then turn it down until the lines re not visible then go about 1/4 turn more, repeat this for the 2 remaining colors, after that its just done to eye for the best color. if you are still having trouble getting the color right you can go in the menu to the video settings and turn the color all the way down then you will have a black and white picture and you can adjust for a perfect black and white picture then turn the color back up in the menu.
As for the focus controls its best done by covering 2 of the tubes so you only have one color on the screen then adjusting to the best looking focus for that color. then repeat this for the other 2 tubes.
If you need more help or clarification please let me know

Tim

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2 Answers

Sony kp-51hw40


blue CRT is most likely shorted. When the blus screen comes up are there concave lines in the screen as well?

Sep 07, 2008 | Sony KP-51HW40 51" Rear Projection...

3 Answers

Sony kp-65wv700


I followed GuestUser/ Slinteriors advice and I fixed it. Open the front of the TV and there are 6 little nobs in the front. The botton 3 are what you need to adjust. from left to right the color controls are BLUE, RED GREEN. For the blue lines, slightly (I really mean very slightly) turn the botton left nob clockwise (right).

Mar 21, 2008 | Sony KP-65WV700 65" Rear Projection HDTV

1 Answer

Toshiba 43A9UE convergence problem


Check the resistors right next to the Convergence ICs often 1 or 2 of them go oen when the ICs fail.

Feb 09, 2008 | Televison & Video

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