Help i got this tv from a friend for free of course and the reason why is because he was cleaning the lenses and pulled one of the completely of and he said he spilled some kind of liquid . i replaced the boards that the stuff fell on. i'm wondering what that stuff is and do i need it because now it clicks i get a light then it clicks it self off.
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Re: rear projection tv doesn't work
The liguid is the coolant for the CRTs. It definately need s coolant or the CRTs will crack. Anywhere the coolant splashed to will cause Board and solder corrosion even if a drop. Its also glycol which is poisonous so be careful if you get any on your hands wash your hands right away. Whats the model of your set?
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Sony rear-projection TVs provide a large-screened entertainment solution for your home or office. Unfortunately, color problems and yellow and blue spots and saturation can occur on the face of the Sony rear-projection TV. These problems can be the effect of damaged cables, electronic interference from other devices or dirty lenses on the inside of the rear of the television set. You can troubleshoot for these problems and make satisfactory repairs without the help of a repairman. No experience with Sony rear-projection TVs is necessary.Step 1
Check the audio/video cable that connects the Sony rear-projection TV to the cable or satellite receiver. This black cable has a number of multi-colored plugs on each of its ends. Ensure that this cable is not visibly damaged in any way, and that each of the plugs is in good shape and is not bent. A damaged audio/video cable will negatively affect the quality of your rear-projection TV's display and may lead to yellow and blue saturation problems and various other display irregularities.
Ensure that there are no other high-powered electronics in the close vicinity of your Sony TV. Speakers, computers and other similar electronic devices use a large amount of power and in turn may give off a lot of electronic interference. This interference can cause problems for your rear-projection TV's screen, such as color blurring and similar color issues. Move any such potential devices to an area that isn't as close to your Sony TV. The color blurring and yellow and blue saturation problems should then decrease over time.
Unplug the TV if problems persist. Ensure that the Sony is completely disconnected from all power sources. This is for your safety.
Place a towel on the floor of the area where you are going to operate on the TV. Carefully turn the TV facedown on the towel, so that the rear of the TV is facing upward.
Remove all the screws from the back cover of the television set using a Phillips screwdriver. Remove the back cover piece by working around the edges with your fingers and gently prying the piece off.
There will be three upright lenses in the back of the television. Cleaning these lenses can alleviate picture quality problems and color blurring. Use a soft cloth and soap and water to clean the lenses of the television. Avoid using any other cleaning solutions, as soap and water is the only universally recommended cleaner from rear-projection manufacturers like Sony.
Ensure that the lenses are dried. Replace the back cover of the rear-projection TV and reinsert all screws using the Phillips screwdriver.
Clean the small front projection mirror. That mirror can get dust on it and will cause the projected image to appear dull and dim and cleaning that mirror will usually restore the brightness and crisp details in the image.
It sounds like something has fallen or crawled into your tv. Unplug unit and remove the panel on the rear bottom. Now remove the upper part of the rear cabinet if you cannot see the problem. You will probably find something on the lense blocking the light. This would be a good time to clean the lenses. Using a soft cloth and windex, spray the cloth then gently clean each lense using a circular motion. Do not wipe until dry as you may scratch the lense. Do not spray the lense as you will cover critical components with corrosive cleaner. Do not push hard or disturb any lense adjustments. Reassemble unit and your tv should look as good as new. Let me know how this works out. firstname.lastname@example.org .
the three guns that the lenses drive operate at 28kv.
there are very high and dangerous voltages in a tv set.
you can look for the fuse main pc board by the power cord..if it is black,there is a major short.if it is just barely blown,change it.
the fuses are 3ag glass type and just pop in. use a set of rubber gloves and insulated pliers.. tvs are DANGEROUS
no its not true, you can lay them flat to move, it sounds like the convergence is out of whack, download the owners manual and redo the convergence manually for the red and blue, then go back and do the same for the multi point convergence for the red and blue, also if the color looks muted or flat, the projector lenses might need to be cleaned as well as the mirror in side of the unit.... very easy to do, just use caution and DO NOT SPRAY ANY LIQUIDS INSIDE THE UNIT.... spray the cleaning rag outside the unit the wipe off the mirror and lenses....i got this same TV free from craigs list here in pa, put a new mirror in because the original was shattered and re did the convergence and this TV pic is AWSOME.... very crisp and clear...hope this helps you
I had the exact same problem and the fix is easy to do. Unplug the TV first of all and wheel it out so you can easily get to all of the rear screws.
Remove the screws from the ventilated back panel (the piece of wood with a bunch of holes in it surrounding the AV connection panel.
Remove the wood panel you just unscrewed.
Remove all screws from the upper plastic case on the back.
Remove the back plastic case carefully. This is a little tricky due to two metal pins that it hangs on. Lift it upwards and you should be able to free it from these pins
At this point you should be able to see the entire workings of the TV, and consequently the massive amount of dust that has accumulated.
Carefully take a vacuum and remove all the cobwebs, taking care not to bump the mirror or the lenses.
First, I used some compressed air to clean off the lenses and then used a clean microfiber towel to remove all the dust from the lenses, the mirror, and the screen on the inside. Make sure the part you are wiping the mirror and lenses off with is free from any dust or dirt or you will risk scratching them.
Reverse the dissasembly process to put the case back together.
I went through the convergance settings at this point and found that they were all out of calibration and as such recalibrated them. Use the mulitpoint calibration for best results.