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How to drain coolant from tubes on magnavox and refill with new to get good picture back

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Click here to find all the info needed to put new coolant in the CRTs.

Posted on Dec 01, 2008

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1 Answer

What is the coolant??


Coollant fluid is in all 3 tubes when it becomes bad you will not see a picture comong from tube Blue tube and Green usally are the one you have to put in New projection Fluid Call Mats 1-800-628-1118 With Front screen Plate removed turn TV on look down into Each tube you should be able to see picture clearly in each Tube if not replace coolant fluid in the ones that are not .

Sep 20, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

I have a Philips Magnavox ptv843 and it has a red tint. The picture is really dark, I can hardly see anything in dark seens. I tried to adjust the contrast and brightness but no help. Thanks


These TV's are known for polluted coolant in the picture tubes.The coolant is between the lense and the tube. The factory has a Service Bulletin about this problem and they say to change the coolant in each picture tube. This will make the TV look like it did when it was new.

Aug 02, 2009 | Philips Magnavox 9P6034C 60" Rear...

2 Answers

Magnavox PTV910. The picture is good but color is bad


the coolant in the blue and green crts has congealed which is causing the red tube to become dominate. The coolant can be changed at home. You can get the phillips coolant replacement kit at the following link which contains the coolant and the CD with instructions.
http://www.tvrepairworld.com/

Jul 15, 2009 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Convergence bowed


Hi

the coming out is glycol oil (coolant). If still under warranty or if you have no electronic repair experience you should take the set back to the shop or to a repair person. Some of the solutions described below can be dangerous, TV's are very hazardous to service. Even when plugged out, TV's can store very high voltages.

Looks like a picture tube problem.
Try to reduce the contrast, maybe it will be better.

Look into the three tubes while the TV is running, and observe the
picture quality of the three. If the red and green are crisper and clearer, and the blue's all hazy from bacteria growing in the coolant, then the fluid needs to be replaced. The CRTs of the colors that seem hazy need to be removed from the light box to be
serviced. The coolant needs to be drained, the CRT assemblies
disassembled and totally scrubbed clean and refilled, then reinstalled and converged. If the coolant is
clear, it can be a weak CRT.

Also the convergence STK ships might need to be replaced, and the soldering checked.

Good luck

Jul 08, 2009 | Samsung PCJ612R 61" Rear Projection...

1 Answer

My picture on my philips rear projection 51PP9100D/37 is awful and very hard to see...what do I need to fix?


HELLO: I HAVE REPAIRED MANY OF THE PHILLIPS AND MAGNAVOX PROJECTION TVS BY SIMPLY EXCHANGING THE PICTURE TUBE COOLANT INBETWEEN THE TUBES AND THE LENS THERE ARE SEALED CONTAINERS THAT HAVE A MINERAL OIL COOLANT IN THEM THEY GET CONTAMINATED BY SOME KIND OF POSSIBLE BACTERIA OF SOME KIND ESPECIALLY THE BLUE LEAVING YOU WITH A SOMEWHAT FUZZY PICTURE REDISH YELLOW USUALLY. YOU WILL SEE WHAT I MEAN IF YOU REMOVE THE FRONT OF THE TELEVISION SCREEN AND LOOK INTO THE TUBES WHILE THEY ARE RUNNING. TO PROPERLY REPAIR THIS PROBLEM YOU HAVE TO REMOVE THE TUBES IN MOST CASES OR CARFULLY SPLIT THEM FROM THE LENS ASSY BEING CAREFUL OF THE OLD FLUIDS INSIDE. CLEAN THE INSIDES WITH WINDEX AND RE ASSY WITH NEW FLUID . I HAVE USED CLEAR MINERAL OIL FROM THE DRUG STORE TO REFILL COOLANT. I HOPE THIS HELPS FROM RUSTY AT RVANS@NETZERO.NET

Jun 07, 2009 | Philips Projection Televisions

1 Answer

How to change crtfluid


Only a qualified service tech should replace coolant fluid. I've serviced TV's for a good while, and I would not attempt this repair without a co-worker showing me precisely what to do. You have to remove the Picture Tube(s) to do this, and if they leak after assembly, your TV circuit boards could be totalled out. The coolant is similar to anti-freeze and is corrosive.

Apr 13, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Adjust picture


If it's a Magnavox, That's what your post is under, then good chance the picture tubes are getting a fungus growing inside the blue and green tubes. The sharpness will be lost as well. Need the tubes cleaned inside and then new fluid replaced. Take a minute to search 51MP392H magnavox, I answered this problem several times the past few days.

Dec 08, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Philips Magnavox 9P6034C 60... Problem


You need to change the coolant in the CRts ( picture tubes) you can get the Phillips coolant replacment kit at the following link with the coolant and the instruction CD with step by step instructions on how to do the replacment with pictures. Its listed under the repair kit category. Heres the link.
http://servicemanuals.vstore.ca/

Aug 08, 2008 | Philips Magnavox 9P6034C 60" Rear...

2 Answers

Magnovox 9P5531 C102


you need to change the coolant in the CRTs. Thats a common problem with the blue and green CRT in phillips magnavox rear projectionsIt makes the color and clarity as good as new after the coolant has been changed. If you need more info let me know, as there is a kit that has the coolant for all 3 tubes and CD with the step by step instructions with pictures available.

Jul 07, 2008 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Fluid Mold


yes it more than likely is related to the spill.
this model is famous for fluid leaks. each projector1.gif tube has a reservoir on the front of it with a fluid in it. this keeps the face of the tube cool.
this depends on how bad the damage is in the tv. in most cases we can reseal the tube and clean up the fluid 400-600.
Once you
take the tube out you will see where it leaked. The problem is that the
frame on the CRT that the heavy screws with springs are mounted on (that
hold the lens coupled to the CRT) is weak and they can bend. We have seen
several that have leaked after the customer moved the set. You can only
tighten them down so much because the frame bends. It is just stamped metal
and not welded at the corners to support the bend.

We remove the CRT, clean it all up, add a very small amount of RTV sealer to
the gasket, reassemble, let the RTV cure thoroughly and refill with coolant.
The extra sealer should prevent future leaks. Haven't had a recall yet.
Mits says replace the CRT...too costly.

You msut check the yokes carefully as well. If any coolant gets into them
you can end up with shorts there and a mess.

Clean the boards carefully and repair any corrosion damage. The coolant is
ethylene glycol and glycerine which is water soluable.

Feb 08, 2008 | Projection Televisions

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