Question about Televison & Video
Color cloudy out of focus
You can do it yourself. You can get the coolant from mcmelectronics.com they are 6.99 apiece and you need three bottles to change all three but the red may not need it. I did all three anyway. After reading many post on this site I found it easier to remove each crt form the tv and do the change in my garage. I couldn't see risking spilling the coolant all over the circuit boards. You can find post on site on how to do it. Couple things though I couldn't find that I found easier. I pulled the drain plug and poured coolant into a coffee can then removed the lens and expansion valve. No need for a turkey baster. Also the drain plug only turns one way. Do not force it or will break off one side and then your going to have to replace it or rig it somehow. I did have to rig one by putting a small screw it the side that broke. It did work like a champ but I wouldn't recommend it. Remove the crt one at a time then put them back. Tag each wire on where it goes . The red wires that on connect to triple bridge/ flyback (going to each crt) looks like there is a disconnect they just need to be pulled straight up fairly hard. There is two rings around the end the show you how far they go back in. They just push back in place. it does looks like you may have pulled the connection off but it does reconnect. They circuit boards push straight down from the tubes and only the grounds should need to be disconnected, The green crt does have a few more connects. I also pulled the screen off, You need a wide blade putty knife to remove the trim then there are just screws. It took about 4 hrs although most of it was just firguring out how to remove everything once I did one crt the others took twenty minutes start to finish.
Posted on Mar 28, 2009
I find it most productive to remove effective tubes, lights, from the unit. Unplug ground wires, cables,(yoke/conv yoke) & crt socket. Drain fluid, via plug, take chamber apart, clean & disinfect. if this a phillips or mag you will probally only need to do the blue& green tubes. for more detatailed info respond. CAUTION THIS IS NOT WATER; it is: Ethylene Glycol. A coolant like anti freeze in your auto. Remove so wont spill on pc boards. Good luck.
Posted on Apr 02, 2008
I suggest doing 1 tube at a time so you won't have to do a major re-convergence adjustment. Remove the green crt first. remove the high voltage lead from the splitter, then the yoke and convergence plugs then the ground wires going from the crt ground strap to the crt board.Lay the assembly down with the drain plug facing up( you will have to support the crt neck with a block of wood)I use a turkey baster with a plastic straw taped to the end. Remove the drain plug and suck out the coolant and empty into a plastic container.I use an old milk carton. When most of the coolant is removed remove the lens assembly. Then remove the half moon shaped plastic from the reservoir . suck out the remaining cooland and use a paper towel to sop up the remaining debris. Reinstall the half moon and lens. Fill the reservoir allowing a litle room for expansion.Reinstall the tube then do the customer convergence adjustment. Do the blue tube the same way. good luck
Posted on May 24, 2008
I documented the procedure I did on the link above. For convergence issues try this link:
Posted on Jun 28, 2009
My tv tech examined my mitsibishi 65 inch rear projection tv and said it would be cost effective to fix because coolant had leaked onto the pc board is there a way to fix it?
Posted on Feb 24, 2009
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Posted on Jan 02, 2017
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