Question about Hitachi 57F500 57" Rear Projection HDTV-Ready Television

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How do I open the CRT guns to add/replace coolant?

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Tries websites like, to buy a complete kit to replaces all three R,G,B CRTS guns coolant chemical replacement the kit also have a tutoring dvd,websites also sell the tutoring dvd alone too.

Posted on Apr 02, 2011


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1 Answer

Coolant boiling after short drives but not showing any change on temp gauge or using any water

you could have a faulty temp gauge(air in the system) was my problem let it cooldown all the radiator cap turn your heater on so water circulates all around the engine add coolant if needed it helps to gun the engine a little watch for flow of coolant then cap it.a closed thermosthat would also cause you car to overheat.

Mar 22, 2013 | 1998 Holden VT Commodore

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Projector tv color is all wrong I need help

That can either be the Guns are out of adjustment or the CRT coolant needs replacement. You can verify if the guns are balanced properly by simply turning the color level down to zero. The picture should appear all gray like the old black and white Tvs. Any color tint would indicate the guns need to be balanced properly. If they wont balance out then its usually because CRT coolant has failed and that can be verified by looking into the lens of each CRt as its playing you will see bad crt coolant instantly if its present because the image will not be clear and you will see bacterial growth inside the lens if its bad Coolant.

Dec 09, 2012 | Televison & Video

1 Answer

I replaced the crt coolant in my 62 inch phillips rear projection tv and the green and red are perfect but the blue is still out of focus when I go to the convergence the cross is perfect but the blue is...

try to change the crt base socket of blue gun and then try. i will suggest if you replace the base socket change all the three at the same time.
crt base


Jan 20, 2011 | Televison & Video

2 Answers


Picture are blurry and have a hollow effect?But Convergence pictures R,G,B colors lines are all alignments up?Need CRT coolant replacement for the green CRT TUBE gun.Tries websites like, to buy a CRT coolant kit for the replacement.

Dec 08, 2010 | Hitachi 53FDX20B 53" Rear Projection...

1 Answer

Color is bad especially colors like orange and the white on peoples teeth is black most of the time andthe picture is not clear

HI, thank you for visit fixya.
Common problem on this set .
Picture tube liquid is dirty.
Mostly in crt green and crt blue.
Do you have electronics skills?. If so, open the TV ( back cover), you will see green,blue and red gun. After turn on your tv, select any channel or video signal, cover with piece a paper two guns at the top ( any), and see how look the picture in the front, try one at time, ( press menu on remote control and see leters-clear). I am sure the green and blue will be no clear. all the time red tube is fine.
I will be here for any quetions.
Thank you

Dec 01, 2009 | Philips 60PP9352 60" Rear Projection...

1 Answer

Blue fuzzy haze. guns need to be pulled and cleaned

Need to replace the CRT coolant. You can get the phillips CRT coolant kit at the following link. The kit contains instructions plus the coolant.

Sep 30, 2009 | Philips Magnavox 9P6034C 60" Rear...

1 Answer


You can get the coolant kit at the following link which has the instructions on CD for replacing the coolant in the CRTs ( Guns)

Apr 22, 2009 | Televison & Video

1 Answer

Yellow tinge in picture how do I change the coolant fluid?

you need to remove the CRT from the set. the problem CRT is the blue CRT. after removing the gun leave the yolk inside. there is a drain plug on the side of the CRT remove it and drain into a hazard waist container and dispose of it as hazard waist according to your local regulations (ethylene glycol) very dangerous if ingested. use rubber gloves and becarefull of the CRT it can implode. after its drained you must take the lens assembly off the clean the CRT face. use 95% rubbing alcohol to clean the face and lenes of the gun. replace the lens assembly and refill the chamber with fresh fluid. replace the CRT assembly in the set. alien according to the service manual. check for leaks after warm up. if leaks accure remove the CRT and repeat the process but save and re-use the fluid reseat and clean all gaskets and make sure the screws are tight.

Feb 17, 2008 | Philips Magnavox 51MP392H Rear Projection...

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 | Televison & Video

2 Answers

Replace the green projection gun

I have almost the same problem, but it was with the blue CRT tube. The coolant leaked onto the underlying PCB and caused short-circuits and sparking or arking. I purchased an exact replacement PCB for the CRT, but I suspected most of its coolant had gone, so I need to re-fill the coolant for the blue CRT to stay cool.

Dec 01, 2006 | RCA Scenium HD65W20 65" Rear Projection...

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