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If it's a old style projection screen pry off front grid, you,ll see a trapezoidal mirror this often becomes hazed smoke, dirt, ect. Make sure set is unplugged DO NOT ASSUME THEIR IS NO SHOCK HAZZARD BECAUSE SET IS UNPLUGGED(see capacitors) be careful and clean mirror with damp cloth and glass cleaner try not to spray as safety percotion, their are 3 tubes red , green, blue, green is th dominaent color if you know how turn blue HVU UP 1st( CLEAN picture tube lens 1st) These type of picture tube have clear poly glycol ( anti freeze) in lens unit to cool and is part of the optical system. I this fluid becomes contaminated then cost of repair may exceed value of unit, then increase red value I just thought you may bee able to do the color via menu not sure, if picture has a green tent at start this should help good luck , lot me know what you see.
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.
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
You have one of two problems based on your description.
1.) Go to a channel that is in black and white and turn the color on the set all the way off.
Examine the screen and picture from several feet back----if the picture is mostly red and looks somewhat yellow in the main part of the screen you have a GLYCOL problem.
These sets have on each picture tube a sealed unit full of Glycol to cool the face of each tube (set has a red, green, blue picture tube)
If you find the yellow/orange look with the color off you most likely have bad Glycol in the blue picture tube---it never happens to the red--bacteria gets into the glycol and eventually there is no picture coming from (in most cases) the blue tube.
Loss of blue will leave you with Red and Green--mix those two and you usually get a orange/red affect.
There is a way to also confirm this with your eyes--it involves getting the back cover off of the set and holding a small mirror (with the set turned on--you have to be careful not to touch anything)
If you look in each lens you should see a fine picture--one red, one green and one blue--if as I suspect the blue tube is contaminated it will not have a picture and will look like a blue floodlight.
IF THIS IS NOT YOUR PROBLEM--GO into the customer menu and select convergence--what you are looking for is will red and blue adjust or not--are they skewed and will not move.
If this is the case you have a convergence problem--I can tell you what is involved to fix in either case.
Let me know what you find--I am here to help people.
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THIS TV HAS KNOWN PROBLEMS WITH PICTURE TUBE FAILURES AND I WILL PREDICT THAT AT SOME TIME IN THE FUTURE EVEN IF YOU GET IT REPAIRED NOW, ONE OF THE REMAINING TUBES WILL START GIVING YOU PROBLEMS. YOU HAVE THREE TUBES IN THIS UNIT (RED,GREEN & BLUE) AND THE RED TUBE IS DEFECTIVE. SORRY FOR THE NEWS BUT JUST TRYING TO SAVE YOU THE ULTIMATE COST FOR REPAIRS, FOR A PICTURE TUBE REPLACEMENT AND SUBSEQUENT SET UP IS A MAJOR & COSTLY REPAIR. HOPE THIS HELPS
As is typical with all Philips projection sets the cooling fluid has become contaminated in the blue and green picture tube assemblies. The red is almost never affected with this as whatever bacterial growth is discoloring the fluid in the blue and green tubes can't seem to survive in red light. The blue and green light is shining up through muddly cooling fluid and that is why the red is predominating. A reputable tv repair shop can pull the tube assemblies and dismantle them and clean and reassemble and refill and do all the necessary adjustments for around $300 to $400.
can you look into the blue lens when the set is playing using a hand held mirror and see if there is a picture in the blue CRT. If not you will need a new tube for the blue. If you do need a tube let me know as I have a source for good used tubes that are very reasonably priced.
In picture number 2, I saw some blue also. So I'd guess that the red gun is not firing. This could be a transistor on the board on the back of the picture tube, or it could be a bad picture tube. I would replace all three transistors on the PC board, if the problem remains, it's probably the tube.
Yes,try cleaning your mirror inside of tv they do get real dirty, also clean dirt off of tube lenses there are 3 of them red,green,blue. these are your picture tubes. Thank You for using FixYa and Have a nice Day.