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Picture tube gel leak

In my attempt to replace the picture tube gel, quite a bit of the gel from on tube leaked onto the boards. Is there a good way to clean this up so it doesn't cause a short or did I just ruin my tv?

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  • apostello Aug 18, 2008

    thanks for the advice. I was impatient and went ahead without a response. It turned out ok. I cleaned everything with watered down ammonia then dried it with a hairdryer. Picture looked great, I have surround do I didn't even bother plugging the sound amp back wife sound? Then it started to bug me, so I tried to clean the connector for that and plugged it in. I turned the tv and heard loud crunchy static sounds so I unplugged it. when I turnes the thing back on it still worked ok but now the tubes project jumpy lines in a few select places. It did this once before real bad the first time I tried to reconverge it. Any ideas how to make these lines go away. By the way, thanks for the response. Maybe I need to go ahead and take the boards out and them a good cleaning still. Also the tube are very slowly leaking a bit of gel from the two i opened and refilled. Is there a certain type of sealant to put on the o ring before I tighten it?



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The best way to clean it is to remove the board completely and wipe up as much as possible, then use qtips with rubbing alcohol to remove the left over residule the alcohol will dry quickly, but still allow the board to air day a full 24 hrs before reinstalling it in the TV.

Posted on Aug 17, 2008


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Model listed here is rather old so first suspect would be bad solder connections on power board or elsewhere. Some of these are also prone to Glycol issues, coolant from the picture tubes leaks and gets onto a board and causes failures of almost any kind depending where it leaks.

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1 Answer

Coolant is leaking onto circuit board and shorting it out

Glycol leaks can be a problem. How bad is the leak is it dripping on the boards. This stuff that s leaking is called glycol conductive anc corrosive. keep the set upluged. The seals in the crts have failed. they would have to be replaced. Very involed repair. it involves removing the tube and removing the glycol removing the seal cleaning the tube replaceing the seal refilling the tube putting the tube back in and aligning. at the shop such a repair is about 2 to three hours..if THE GLYCOL has leaked on the board then the board could have been damaged. AT this point you have to ask if it is worth it. always get a profesional to do this type of repair. i dont say this often but this is not a fix it yourself

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Well, it could be true that that is your problem, but see what kind of estimate they will give you for fixing it, a big tv like this will cost quite a bit to fix. You could attempt to fix it yourself but I don't want to be the one to tell you how as I don't want to be the reason if you should get hurt from working on this. If it costs too much to fix, then projection tvs are not for your parents and you should try something cheaper and get an lcd tv. Circuit city has a 32 in for under $500. Basically if the gel leaked all over the tv, it may cost quite a bit and this isn't fun for them or for you. If you have any other questions, let me know

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I am not aware of this model having the pip bypass procedure . Older models Yes . I have though seen some of these sets were the picture tube leaked onto the cicuit board causing this problem. With the tv unplugged and the back removed , Use a flash light and look at the board on the left to see if there is any liquid on this board . It is usually below the metal brackets where the picture tubes are mounted . Sometimes you can swipe your fingers on the under side and fill the fluid coolant . Then look right below that area and you'll see it on the board . Use paper towels to dry up well . Then plug back in to see if your problem is resolved. Now if it leaked that is telling me your seals are leaky and need to be replaced and coolant added to that picture tube that was the problem . This can be very tricky to do . If that was your problem call around to get your best price to repair your set without them telling you , you'll need to get the picture tube replaced . Good luck

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1 Answer

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this model is famous for fluid leaks. each projector tube has a reservoir on the front of it with a fluid in it. this keeps the face of the tube cool.
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Once you
take the tube out you will see where it leaked. The problem is that the
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We remove the CRT, clean it all up, add a very small amount of RTV sealer to
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Clean the boards carefully and repair any corrosion damage. The coolant is
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