Question about Sony KP-51HW40 51" Rear Projection Television

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Sony kp51hw40 i don't have green color on picture,i tried color adjust ,and checked tubes, all 3 crts are on red,green and blue.can you give me some instructions please thank you

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Did you adjust the green screen control .

Posted on Oct 24, 2007

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Have a Sanyo big screen tv but need need to adjust the color, to yellow!


Need to know if older set with picture tubes---turn color off--if yellow screen you have a loss of blue of some sort--red and green will give you a yellow screen. If set has the 3 picture tubes look inside in the lens to see if all 3 have a image---little or no blue means a problem there.

Oct 15, 2012 | Sanyo Televison & Video

2 Answers

I took the back of the tv off and the blue lamp is not bright like the red and green. Could this be a coolant problem or lamp. I have the PT5492S Akai rear projection TV.


The blue is usually dimmer than the other two lens; what I would suggest is try to look into the lens with the set on; BE CAREFUL AND NOT TOUCH ANYTHING INSIDE THE SET.

If the red and green show a picture but the blue looks like a floodlight you have bad Glycol in the blue tube (common in these sets).

If all have a normal picture remember to wipe the lens clean at the top; do not try to take the lens etc apart.

Before you rate this information let me know what you find.

SD TECH

Aug 15, 2011 | Akai PT5492S 54" Rear Projection...

2 Answers

Turns on for 30 sec then goes bright blue and goes back into standby. turn back on it does it agian


This is blue CRT problem in tv as it is rear projection tv that has three CRTs red-green-blue inside to project color picture on front screen.
Blue CRT (tube) will be replaced to fix the issue and it is job of Pro because lots of adjustments are required after replacement of tube.
Local tv repair shop will help you for that.
Thanks

Oct 02, 2010 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Sony kp51hw40 has green shadows and on edges in pictures and blue flickers on and off, tried all adjustments including screen, focus, and menu??? no luck


The CRTs in this model of TV had a problem with internal leakage. The blue was usually the first to show the symptom (flicker). Because all 3 CRTs are connected to the same high voltage source, when 1 acts up, the other 2 suffer as well. You need to replace the Blue CRT. However, this TV has some age on it... 1 tube will lead to 2 tubes, and 2 tubes to 3... They only last about 7 years. If you love the TV, replace all 3 (about $200 each). I recommend replacing the Red and Blue first, adjusting the geometry and convergence to the original Green. Then replace the Green, adjusting the geometry and convergence to the new Blue and Red.

Mar 15, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Faint lines show up when i get dark screens in movies


First check what color of faint lines comes then reduce Screen Volts in TV of that CRT (tube)
Take off lower front cover, speaker grille of TV, there you will see focus control block that has 6 control knobs, upper 3 knobs are focus adjustment of red-green-blue CRTs and lower 3 knobs are screen volt controls for red-green-blue CRTs. Turn screen volt control knob CCW to reduce screen volts of desired CRT.
Put TV on any free AV input so screen will be dark enough to adjust screen volts.
Thanks.

Aug 28, 2009 | Sony KP-57WS500 57" Rear Projection...

2 Answers

Screen goes all blue


if it is a KP65ws500 it is one of a group of sets made by Sony where all the picture Tubes(set has a RED, Green, and Blue Tube.) ARE BAD. Most of these sets had all three tubes replaced during a program Sony had. The tubes are NO LONGER AVAILABLE---the only way to get one is remove the tube and send it out for rebuild---most of these cost about 250-300 just for the tube.

The set is shutting down because when the screen goes bright blue it detects one of the CRT's(tubes) is pulling way to much current.

The problem with Replacing your Blue Tube is cost and----sooner or later the other two(red and green) are going to fail also.

best advice is maybe not to fix it.

I replaced dozens of the tubes in these sets when Sony had a recall and provided the tubes for free and paid for the labor etc.

I know I am not giving you good news but I do this here for free and if this has been helpful give me a vote here. Thanks!

Aug 20, 2009 | Sony KP-65WS500 65" Rear Projection...

2 Answers

Magnavox PTV910. The picture is good but color is bad


the coolant in the blue and green crts has congealed which is causing the red tube to become dominate. The coolant can be changed at home. You can get the phillips coolant replacement kit at the following link which contains the coolant and the CD with instructions.
http://www.tvrepairworld.com/

Jul 15, 2009 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

TV picture is red.


Normal color picture is composed with 3 colors R-G-B (Red-Green-Blue). Picture turns Red means: Missing Green and Blue colors (many reasons: bad contacts, projector tubes dead, and other...). Try to give some "tabs" to diagnose ... I don't know what is the type of your Projection TV, how long you owned it, to have more idea.

May 15, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

Blue hue


This might denote a problem with the CRTs (Red and Green). I would suggest having them checked with a CRT analyzer and if they are bad, having the technician perform a picture tube rejuvenation on all three CRTs. Now this will cut the tube life down to about 2 years, but if the CRTs are bad you really don't lose anything by doing this.

I hope this helps
Thank you
Shuttle83

Dec 19, 2007 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Green Picture.


i suggest to have it check by a qualified service technician. there seems to be a problem with your crt (cathode ray tube). because inside this projection tv are 3 crt guns responsible for color red, green and blue, which only qualified technician can adjust it and replace if it is necessary.

Jan 15, 2007 | Philips 55PP9701 55" Rear Projection...

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