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

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The screen gets red with no picture. so i openned up the back and noticed that the green bulb or picture tube whent iut out after 5 minutes.

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Yes u have bad picture tube but is not the green is the red , the red picture tube id over voltege , thats way u had red picture ,

Posted on Aug 26, 2010

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Green light bulb that projects light to my screen I believe is leaking and shuts down the tv after 20 minutes


That is not a light bulb. That is a Cathode Ray tube. You are leaking tube coolant and that means the seals on all 3 cathode ray tubes are going bad. This is something that can be repaired but you need a qualified tech to do so or the TV can be easily ruined.

Jul 11, 2015 | Mitsubishi WS-65413 65" Rear Projection...

1 Answer

Tv is yellow orange color what is problem


The model indicated does not have a "bulb" as it uses 3 picture tubes.

Examine the picture with color set at zero---stand back and look= if the screen has a mostly yellow (all or part of the screen) you have bad Glycol in the blue picture tube(if need explanation ask) and a look in the lens of the Blue tube will confirm this.

If able with back off and a small mirror look in each lens--red picture, green picture and blue picture.

If the Blue looks like a floodlight with little or no image--bad glycol in that tube.

Jun 16, 2012 | Samsung HCN5527W 55" Rear Projection...

1 Answer

The screen turns blue after about 2 minutes of turning on the TV


Sony TVs has an Optical Block issue. If there is an issue with the optical block, then there will be green, blue patches or tint on the TV display. Try resetting the TV to the factory settings and try Power resetting the TV. Turn Off the TV and remove the power plug from the wall outlet for 1 minute and reconnect it and check the operation. If the issue still persists, then TV may require service. You can contact the Customer relations team and check for the available options. Sony had repaired free of cost for such issues. Hence, contact the customer relations.

Jul 25, 2010 | Sony KP-57HW40 57" Rear Projection...

1 Answer

I have a hitachi rptv model #43FWX20B and the picture has a red tint to it. Opened back up and red green and blue bulbs light up. red bulb stays bright while blue and green go dim to bright as tv plays....


Howdy;
Since you don't have any white lines with the red screen/picture I would say that the red bulb (CRT) is conducting too much. There is an adjustment control for that. The 'sceen' control is behind the speaker cover and service cover. Turn red screen control slightly to the left until you get a good black and white picture.

Good Luck, Big Irish.

Nov 22, 2009 | Hitachi 43FWX20B 43" Rear Projection...

1 Answer

I have the same problem(redish screen with no green at all)


Does Tube Light up? with TV on Look down into Tubes and see if picture is clear or you can bearly see picture or not at all Your Projection fliuld may need changing Ive seen where tubes are still lighting but No picture showing inside tube---- Bad Coolant Fuild Call Mats for fuild and for Tube if thats what it is Call Encompass 1-800-638-3328

Oct 05, 2009 | Panasonic PT-47WXC43 47" Rear Projection...

2 Answers

On our Sony KP-51WS510 projector television (with HD cable box) when we turn it on the screen goes green and the turns the cable box off and goes blank. Also I noticed the light on the front of the...


when it goes green, your green picture tube is shorting out, replaceing the green tube costs alot of money. these sony's had alot of bad tubes, the red and blue are probably going out too, it will cost alot to fix this, at least $500 even if you find good used picture tubes to put in it.

Sep 19, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

My picture was prodominately green/red. I took the back of the TV off and looked into the bulbs. I could see a picture in the red and green, but in the blue it was barely there. Blue light was there, but...


1.) It means the Glycol in the blue tube is bad--usually contaminated by bacteria--each of the 3 picture tubes has a sealed area between the face of the tube and the lens above.

2.) If you see a picture in Green and RED but blue looks like a floodlight--the blue tube would have to be removed, drained, and the area with the Glycol washed out---new glycol added and the tube resealed and installed back into the set.

3.) This is a fairly major repair--the Glycol is very toxic---like antifreeze but much more concentrated---unless you have done it before I would not suggest it as a do it yourself job.

4.) The bacteria never affects the RED(it does not seem to like that color) and only sometimes the Green.

5.) It may not be worth repairing as most shops charge 200-300 or more for this kind of repair---not to mention that after it is done quite a lot of adjustment to the convergence will be needed from removing and reinstalling the tube.

6.) I know I am not giving you good news but you actually found your problem yourself! If you need any advice or help reply to this post and I will try to assist you.

I do this here for free so if this information helped you please take a minute to give me a vote here.

REGARDS, SD TECH

Sep 15, 2009 | Akai PTH5498 54" Rear Projection...

1 Answer

FADING TO BLUE SCREEN


Sounds like you have a problem with the blue gun in your picture tube or its drive circuit. You might remove the back cover and gently tap on the neck of the picture tube using a plastic screwdriver handle while watching the screen in a mirrow. If the picture flashes back on or on and off then the picture tube is the problem. If this is a projection tv you have three separate tubes : red, green & blue. you'd need to tap the blut one.Gently!!!! Stargazer

Feb 13, 2007 | Sony KP-53HS20 TV

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