Question about Projection Televisions

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After 2hrs, TV shuts off. Around center of screen turns to grennish color when TV was turns back right after shuts down. TV turns back normal right after TV was left kept off 3-4 hrs.

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Replaced YDRVTP & YSUS CBA's. Worked.

Posted on Aug 22, 2008

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The color was off on the tv i took the bottom back off and there was a box with three screws on top and three screws on bottom that adjusted the colors when i turned the top left screw a little the three...


turn the center dial ( for green) down slightly then turn the other two the red and the blue up slightly to get the best screen without a dominate color screen.

Sep 02, 2011 | Philips 50P8341 50" Rear Projection...

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K957ws500 stays on for about 30 minutes then the screen shuts off the light blinks on the display


You have a bad convergence board, or the TV processor has garbage in ti, and if you leave the TV unplugged from the wall, for 40 MIN. that will reset it back to normal. If that don;t work then it is the convergence board, unless if it turns real blue, or green before shutting down, then that color , the screen voltage needs turn down, then it will stay on. Or the red, blue, or green CRT is sorting out, then it is time to buy a new LCD, if it is a bad CRT. for a service call it will run around 70 dollars to find out. Take care.

Jan 09, 2011 | Sony KP-57WS500 57" Rear Projection...

1 Answer

I replaced the color wheele in my Samsung HLN617W and when I got it put back together the picture was not centered in the screen The TV is a 61" DLP and it is a samsung.


When you replaced the color wheel it sounds like you took the DMD board out or you bumped it? Either way the DMD board will need to be realigned and that involves reaching into the TV while it is in normal operation. The DMD board in the one sitting right behind the digital bard and has a small fan facing the heat sink on it. There are three screws 2 on the left side on one on the lower right that need to be loosened just a bit and then with the set on you will have to move the board back and forth to achieve dead center. Remember from the back moving the board to the left moves the picture to the right and pushing down on that board will shift the picture upwards.

Oct 14, 2009 | Samsung HLN617W 61" Rear Projection HDTV

1 Answer

Color and Image are Bad!


Convergence IC's are bad or poor solder connection, IC's are large chips with heatsink mounted to them, re solder them to board, if not fixed replace IC's, should be 392-110s, but check them number is on the IC itself.

Aug 09, 2009 | Hitachi 46F500 46" Rear Projection...

1 Answer

Samsung HCN4727W Rear Projection TV, green screen, audio works


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,Akai2_bing.gif,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...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*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

Jul 10, 2009 | Samsung HL-R4667W Rear Projection...

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

Color adjust


Greetings!

Adjusting the picture tubes is a scary proposition, but since you have already done it...
The easiest way to balance the gray scale is to turn the color all the way down on the set. The next part is easier with two people if the screen controls are on the back of the set. This is the part you saw that has six small knobs on it. There are control for the focus of the red, gree and blue and for the screen level of the red, green and blue. You will want to adjust the screen controls in an effort to get the picture black and white (this is why you turn the color down), hence the term "gray scale". Just make slight adjustments, take your and be patient. It will take some time, but you will get your picture balanced back out in time.

Hope this helps!
Rob

Jan 15, 2009 | Philips 50P8341 50" Rear Projection...

1 Answer

Toshiba TP50H15


You can adjust the lines and make them straight. You can also in the same process, make them line up.
1. With the TV on, press the mute button the remote control so that you have picture but no sound.
2. With remote in one hand (holding it as far from the TV as you can but still be able to reach the TV with your other hand), press and hold the mute button again, with the other hand, using the control panel underneath the screen, press the menu button on the TV set.
You will notice an "S" on the screen on the right hand side about 2/3 from the left, halfway up the screen (If you did this right).
This means you are in service mode.
With the remote, curse right only once and you will have some information displayed in the upper left. The top line is Item, the one underneath is Data.
Press "7." This will display the built in cross hatch pattern. You can move the line around with the directional circle located at the center of the remote. Using the "3" button, you can decide which color to move. To move the curser to a new location, The number pad doubles as a direction key pad. (2-up), (4-left), (6-right), (8-down). To simplify the process, you can eliminate the red or blue or green lines and only focus on one color at a time. "0" will shut on/off the green line. "100 button" will shut on/off the red line. "CH RTN or Enter will shut on/off the blue line.
"7" will exit the process as well as get you there.
Power off when you are done and turn back on.
Repeat as needed.

Jul 05, 2008 | Toshiba 50HX81 50" 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

Tv problems


Unplug the three red-blue-green plugs nest to the convergence amps. If the unit powers up and stays on the picture will look bad but will confirm that the convergence amps have failed...
Replacing the amps and one or more resistors in the yoke return will restore the set to normal operation..
Use only Sanyo original Ics..
Bill

Oct 11, 2007 | Panasonic PT-47WX49 47" Rear Projection...

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