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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Projection TV coolant?
I have a Barco Vision II video projector that is really fuzzy, probably due
to cloudy coolant. Does anyone know where to get the stuff, and how much one needs for a typical set of 3 CRT's? |
#2
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Projection TV coolant?
MCM they are on the net.
"George R. Gonzalez" wrote in message ... I have a Barco Vision II video projector that is really fuzzy, probably due to cloudy coolant. Does anyone know where to get the stuff, and how much one needs for a typical set of 3 CRT's? |
#3
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Projection TV coolant?
This is no joke! You can use "standard" non-perfumed baby-oil.
Works 100% and is cheap. regards: -Serge- "Art" wrote in message ... MCM they are on the net. "George R. Gonzalez" wrote in message ... I have a Barco Vision II video projector that is really fuzzy, probably due to cloudy coolant. Does anyone know where to get the stuff, and how much one needs for a typical set of 3 CRT's? |
#4
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Projection TV coolant?
I pulled a 1988 Magnavox 47" PTV from alongside the dumpster at a thirft
store about a year ago. Although the set was old, it was in rather good shape for the age and had never been serviced apparently from the condition of the coolant. The coolant wasn't cloudy... it was filfthy! Like looking into a petri dish with all sorts of things growing in it. Not expecting the best picture even with new coolant since the set was so old, I tore into the CRTs and refilled them with mineral oil after cleaning so I could see how CRTs would do. There was quite a bit of burn in from the normal raster, so everything took on a "warmer" yellowish tint, but still a usable picture for a free set. I didn't bother ordering proper coolant and left the set running with mineral oil since I was going to trash it eventually A year later the set is still running with mineral oil as coolant. No leaks, no overheating, no clouding or bacterial growth yet. The CRTs are very weak now, but it still runs! "Serge Simon" wrote in message om... This is no joke! You can use "standard" non-perfumed baby-oil. Works 100% and is cheap. regards: -Serge- "Art" wrote in message ... MCM they are on the net. "George R. Gonzalez" wrote in message ... I have a Barco Vision II video projector that is really fuzzy, probably due to cloudy coolant. Does anyone know where to get the stuff, and how much one needs for a typical set of 3 CRT's? --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.605 / Virus Database: 385 - Release Date: 3/2/2004 |
#5
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Projection TV coolant?
While we have been successful in using both baby oil and mineral oil over the
years, especially when the coolant was hard to get at any price, it is not recommended as it is a heavier liquid and really has very little cooling properties. The important thing is to remember what makes the coolant go bad in the first place. "Heat" creates a type of bacteria infection which is what you are seeing in a bad Liquid Coupler. If you simply replace it you will have the problem again. Always best to open it up completely and wash everything out with 91% Alcohol available from your local drug store. Clean the rubber gasket carefully also. Once cleaned completely, simply put it back together, being careful that it is exactly the same way and pay close attention to torquing the nuts properly and keeping them even. We do suggest you then use the proper coolant which is exactly what you use in your car, except it is a hi-grade, pure form of antifreeze. It is made up with 70% Ethylene Glycol and 30% Glycerin, so if you want to put your chem. experties to the test just make it yourself. However, we would suggest MAT Electronics in Ohio (800-628-1118) or HBF Electronics in PA. (800-426-4230). They seem to have the best price on the stuff, at about $6.00 a bottle. You will use about two bottles in order to do all three guns. The exact RCA replacement number for the fluid is #212072. Use it when ordering from any source supplier. We completely rebuild about 10 to 14 pro-jo's a week. If we can be of any assistance, don't hesitate to contact us. Later, Jim Middletown Electronics Steve Reinis wrote: I pulled a 1988 Magnavox 47" PTV from alongside the dumpster at a thirft store about a year ago. Although the set was old, it was in rather good shape for the age and had never been serviced apparently from the condition of the coolant. The coolant wasn't cloudy... it was filfthy! Like looking into a petri dish with all sorts of things growing in it. Not expecting the best picture even with new coolant since the set was so old, I tore into the CRTs and refilled them with mineral oil after cleaning so I could see how CRTs would do. There was quite a bit of burn in from the normal raster, so everything took on a "warmer" yellowish tint, but still a usable picture for a free set. I didn't bother ordering proper coolant and left the set running with mineral oil since I was going to trash it eventually A year later the set is still running with mineral oil as coolant. No leaks, no overheating, no clouding or bacterial growth yet. The CRTs are very weak now, but it still runs! "Serge Simon" wrote in message om... This is no joke! You can use "standard" non-perfumed baby-oil. Works 100% and is cheap. regards: -Serge- "Art" wrote in message ... MCM they are on the net. "George R. Gonzalez" wrote in message ... I have a Barco Vision II video projector that is really fuzzy, probably due to cloudy coolant. Does anyone know where to get the stuff, and how much one needs for a typical set of 3 CRT's? --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.605 / Virus Database: 385 - Release Date: 3/2/2004 |
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