Philips Magnavox Cooling Fluid Headache

[John Marinello]

If you're lucky, the smoke came from a wet power resister, or another component that normally operates hot. I wash stuff regular with heavily-deluted dish soap, or Windex, but it has to be bone-dry before power is applied. I had to replace contaminated coolant in a Phillips set years ago.
Blue also. That was back when a local TV shop sold the coolant over the counter. They told me that the blue was the first to fail, and the theory was
that the blue CRT assembly area was closest to the cabinet assembly area.
Hence, more dust & contaminants in the air.
Freak accident years ago... A full can of beer was batted off of a counter, and landed upside-down inside of a computer, while the computer was in use.
You had to see it to believe it. What a shot! Entire mother board & every card in the expansion slots was frothing like a rabid dog. I immediately unplugged it and sprayed everything down in the kitchen sink. I blew as much water out that I could, put it on the heating register, covered it with a blanket, and let it sit for a few hours. The clock lost 15 minutes, but otherwise it worked fine.

[crtfool]

Originally Posted by YamahaFreak

This is not encouraging. I needed to use water because the coolant was everywhere, and probably would have been near impossible to completely remove otherwise. I'm not sure where the smoke came from, but I will take a closer look tomorrow. It seemed to emanate from the general vicinity of the audio amplifier. Hopefully, it's something simple(capacitor, resistor, etc.).

Does anyone know of a place where I might find schematics for this set?

P.S.--Is that a CRT from a video camcorder viewfinder in your avatar?

Yes - that is a 1/2 inch B&W CRT from a camcorder. I collect mini TV sets and micro CRTs and EVF units. I would love a 1/2 inch COLOR CRT, but the smallest ever made was 1.5 inches.

BTW - I was not chastising anyone for suggesting using water on circuit boards, but I have seen what damage water can do, especially to solder joints, and I would never use it - I would use isopropyl alcohol instead in an emergency situation because it evaporates very quickly.

At the very least, you will get some very good experience working on a set that you got for free - and if you do get it working properly, it will give you lots of satisfaction. Again, just be careful - regular CRT sets have lots of very high voltage in and around the CRT, but these projection sets have triple the amount.

[YamahaFreak]

Originally Posted by John Marinello

If you're lucky, the smoke came from a wet power resister, or another component that normally operates hot. I wash stuff regular with heavily-deluted dish soap, or Windex, but it has to be bone-dry before power is applied. I had to replace contaminated coolant in a Phillips set years ago.
Blue also. That was back when a local TV shop sold the coolant over the counter. They told me that the blue was the first to fail, and the theory was
that the blue CRT assembly area was closest to the cabinet assembly area.
Hence, more dust & contaminants in the air.
Freak accident years ago... A full can of beer was batted off of a counter, and landed upside-down inside of a computer, while the computer was in use.
You had to see it to believe it. What a shot! Entire mother board & every card in the expansion slots was frothing like a rabid dog. I immediately unplugged it and sprayed everything down in the kitchen sink. I blew as much water out that I could, put it on the heating register, covered it with a blanket, and let it sit for a few hours. The clock lost 15 minutes, but otherwise it worked fine.

Now THAT is encouraging! I think that you might be right about the smoke, as it never really smelled. I'm letting the board dry for a few days; should I put it in the sun?

[freakaftr8]

This happened to my parents set last year with a Samsung 65" RP HDTV. You might be okay still, but having smoke come up is never good... The intermittant issues you are having I hate so say will most likely be there for a long time.. Mine still glitches and the remote wont operate the set and it turns on and off on its own.. And blue convergence tweaks out and comes back.. Thats a convergence IC for sure. Mine was the blue gun too. They were heavy smokers in the house. The smoke nicotine affects the blue coolant for some reason..YOurs might have come from a smokers house as well. Good luck.. Just use windex and dry the boards for like a few days, couple hours under a heat lamp couple hours w/o the lamp, and back and fourth. Hopefully youll be ok. Good luck, that glycol is hell on circuitry and it takes a long time for the circuitry to dry out, transformers including the flyback can retain moisture especially under it where you cant access the traces.

[YamahaFreak]

Originally Posted by freakaftr8

This happened to my parents set last year with a Samsung 65" RP HDTV. You might be okay still, but having smoke come up is never good... The intermittant issues you are having I hate so say will most likely be there for a long time.. Mine still glitches and the remote wont operate the set and it turns on and off on its own.. And blue convergence tweaks out and comes back.. Thats a convergence IC for sure. Mine was the blue gun too. They were heavy smokers in the house. The smoke nicotine affects the blue coolant for some reason..YOurs might have come from a smokers house as well. Good luck.. Just use windex and dry the boards for like a few days, couple hours under a heat lamp couple hours w/o the lamp, and back and fourth. Hopefully youll be ok. Good luck, that glycol is hell on circuitry and it takes a long time for the circuitry to dry out, transformers including the flyback can retain moisture especially under it where you cant access the traces.

At this point, all I can really do is wait and hope for the best. I managed to procure the original remote from the folks that tossed it. BTW, I know them personally and the TV was never smoked around, so nicotine smoke isn't a problem.

[YamahaFreak]

Well, the book has been closed on this set, apparently the parents thought it would be a good idea to curb it while I was away from home. I was going to maybe get the speakers and some other things out of it, but of course I can't do that now. It's a damn good thing I hadn't put any money into it yet!