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October 14, 2007 02:41 PM

Categories: Televisions and Projectors

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amberaudrey

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Joined: 10/14/2007

I just was given a Magnovox Rear projection tv.   I put it in my daughter's room, and it looks crazy.  The focus is not right, and all the colors are not blending together at all.  Can someone help?  I read an article posted about changing the fluid.  Should I do that? 

model-  fp5251g104

 chasis-  ptv711ah01

Discussion:    Add a Comment | Comments 1-25 of 79 | Latest Comment | 1 2 3 4 Next »

October 14, 2007 8:18 PM

What you have is a convergence issue, and also Phillips tv's are notorious for fluid problems with primarily the blue tube and secondarily on the green tube. the red tube never seems to have a problem with fluid. If the blue or green colored picture (Since the convergence is off) is severely smeared hazy looking you need a fluid change, also i will look down into the tubes with the tv on to see if the fluid is clear, look in the red tube so you can what a good fluid looks like, then look down in to the green and blue tubes.At least you will have to replace the STk convergence ic's. If you have to change the fluid, this could be a huge repair with allot of expense, if you have a professional do it. 

October 15, 2007 5:33 AM

I read the instructions for one to do it themselves, if careful would someone like me with no to little knowledge about these tv's be successful?

October 15, 2007 5:48 AM

The stk's are easier to change than the fluid, i would attempt this first and verify that you need to change the fluid. if even one tiny drop of the fluid gets onto the boards it can cause the tv to severely malfunction and damage the boards. I have not read the instructions here on how to change the fluid, i am not sure where you read this from. I really don't know if you can do this repair, i will be honest it is one of the more involved repairs that can be done, usually requiring allot of adjustments after the repair is done. And you will be dealing with the crt's. they will possibly have 30,000 volts on them even with the set unplugged.

October 15, 2007 6:23 AM

well that sounds like fun :)   Do you suggest that first then?  changing the crts?  is it cheap to get parts?  Thank you for all your help by the way :)

October 15, 2007 7:30 AM

Check to make sure you need to change the fluid, like i said above. The stk repair is a given, The cost of the stk's are not that bad although avoid the really cheap ones, because there are allot of poorly manufactured ic's out there. MCM electronics is one place you can go. there are other places Larry seems to have some good sources. 

October 15, 2007 11:40 AM

I have the directions to change the fluid, and I have done this many many times. It goes like this:

Changing Projection TV Coolant

1. Tip the TV set so the expansion chambers are pointed up. The expansion chamber is a small white/clear plastic bulb-like thing that is attached to one side of each of the CRT's up near the top lens. In some TVs, the expansion chambers are already pointed up - In this case you don't have to tip the TV

2. Cover the circuit boards below the CRT's with several paper towels to prevent accidentally spilling any coolant onto the boards.The coolant is corrosive and will destroy the circuit boards. Don't skimp on the paper towels here - they are cheap!!!

3. Remove the four screws that hold on the focusing lens assembly and remove the focusing lens assembly.

4. Note the position of the expansion chamber then remove the expansion chamber. It will need to be reinstalled in basically the same position so remember the position or take a picture if you need to. There is a small o-ring on the neck of the expansion chamber where it threads onto the CRT housing - Don't loose it!

5. Use the baster and tube to suck the fluid out from the hole where the expansion chamber was removed. This hole is fairly small...maybe 5/16" or so.

6. Once most of the fluid is out, remove the four screws that hold on the lens cover plate.

7. Remove the lens cover plate, the lens & the large o-ring. (be gentle with the o-rings!!!)

8. Clean the CRT chamber & lens with denatured alcohol. Use 100% cotton balls so you don't scratch anything.

9. Clean the CRT chamber and lens with distilled water. Again, use 100% cotton balls so you don't scratch anything. This will rinse out the alcohol residue. You need to use distilled water for this so there is no mineral residue.

10. Gently clean the large o-ring with distilled water (don't use the alcohol because it might eat the o-ring) Dry off the o-ring and lightly coat it with 100% pure silicone (not siliconized acrylic caulking or acrylic latex caulking - ONLY USE 100% SILICONE).Use your fingers to rub a thin layer of silicone all over the surface of the o-ring. Then place the o-ring in the groove in the CRThousing.

11. Place the lens in its position on the o-ring.

12. Place the lens cover plate over the lens and install the four screws.

13. Clean your baster and tubing with denatured alcohol then rinse with distilled water.

14. Use the baster and tube to suck clean fluid from the bottle and install it into the CRT through the expansion chamber hole. Goreally slow when it is almost full to minimize overflow. Wipe up any overflow immediately. There will be a small air pocket inthe CRT when you are done - you will not be able to fill the chamber 100% - This is O.K. Just be sure to fill it as far as possible so the fluid is just up to the edge of the expansion chamber hole.

15. Install the expansion chamber. Be sure to install it in the same position as it was before you removed it. Also be sure that the small o-ring is on the neck of the chamber before you thread it on. The chamber is just plastic so don't over-tighten it or you might damage it. Screw it on as tight as you can go by hand and then give it about 1/8 of a turn with pliers. (you might have to use needle-nose pliers to get a good grip on it.)

16. Place the focusing lens assembly into position and install the four screws.

17. Turn on the TV and check for leaks over the next 20 minutes. Remember, you have not yet removed all the paper towels from inside the TV. Remove these once you know there are no leaks.

Other things that should be done after replacing the fluid include...

1. Clean the mirror

2. Clean the top lenses of the focusing assemblies

3. Focus the CRT's

4. Adjust the convergence

Here is a list of things you will need:

1. Turkey baster

2. Vinyl tube

3. Cooling Fluid

4. 100% cotton balls

5. Paper towels

6. Denatured alcohol

7. Distilled water

8. Pliers

9. Screw driver

Ordering Coolant:

www.mcminone.com Part #483531067032, This is the original Philips fluid.

"Those who do not know their opponent's arguments, do not completely understand their own".**For complete TV repair kits including parts goto www.TvRepairKits.com

October 15, 2007 12:11 PM

Wow, that is not how we do it, although what you are suggesting will work fine.  We remove the crt assembly from the tv and then separate the crt from the lens assy.

October 15, 2007 12:16 PM

Doing it that way , or the way you do it, I have found messes up the convergence. I have done this in the home a few times with no trouble at all.

"Those who do not know their opponent's arguments, do not completely understand their own".**For complete TV repair kits including parts goto www.TvRepairKits.com

October 15, 2007 12:16 PM

The newer crt's will not have the white expansion chambers, they have changed this to be a rubber expansion located under a plastic dome integrated as part of the crt housing sitting on top you can see a black dome. on this type there is a black plug.

October 15, 2007 12:17 PM

I have not had to do any fluid changes recently on Magnavox or Philips, as This was several years ago, when we were authorized. Thanks for the tip!

"Those who do not know their opponent's arguments, do not completely understand their own".**For complete TV repair kits including parts goto www.TvRepairKits.com

October 15, 2007 12:22 PM

Larry Dillon said: Doing it that way , or the way you do it, I have found messes up the convergence. I have done this in the home a few times with no trouble at all.
Yes, it does affect convergence, most of it can be adjusted out with the convergence rings, then with a touchup on the edges in the digital convergence.  but again it is just how you do it. What you are doing is fine. My fear has been getting a drop of fluid in the set causing me more trouble.

October 15, 2007 12:25 PM

Thats why you cover the boards. I generally go through a couple of rolls of paper towels, as you buy them bulk and they are cheaper. i have, in the past, did not use anything to cover the boards, and I have spilled fluid on the boards but did not damage it as I washed the board with the power wash in the spray can. Works great. Leaves no residue.

"Those who do not know their opponent's arguments, do not completely understand their own".**For complete TV repair kits including parts goto www.TvRepairKits.com

October 26, 2007 10:45 PM

Hey I have done that to both my green and blue crts but now the convergence is off can you guys please help?!

October 29, 2007 8:15 AM

There are two ways to work this, if you did not remove the crt's and are having convergence trouble, you may have bumped the rings on the crts, actually on Philips they are on the yokes, two ring tabs, try moving them to align them up. If this does not work completely, leave the rings in the best  convergence that they will go in, then do a factory convergence. To get into factory convergence mode is slightly different on different models. it always starts out with pressing the keys 062597 then either status, menu, or enter. it is different on each tv. And on some models it is 062596, then the other key options i have mentioned.

February 4, 2008 10:26 PM

Hi everybody,

   A quick question regarding changing the fluid (and any projection TV repair in general)..what dangers should  a novice be aware of when working on a project like this? I just bought a 50" Philips (50P8342) TV from a neighbor for $30 and it seems like the convergence ICs have failed, so I am going to try to replace them.

Thanks for all your help!

Mo 

March 6, 2009 10:08 AM

zapdbf said: There are two ways to work this, if you did not remove the crt's and are having convergence trouble, you may have bumped the rings on the crts, actually on Philips they are on the yokes, two ring tabs, try moving them to align them up. If this does not work completely, leave the rings in the best  convergence that they will go in, then do a factory convergence. To get into factory convergence mode is slightly different on different models. it always starts out with pressing the keys 062597 then either status, menu, or enter. it is different on each tv. And on some models it is 062596, then the other key options i have mentioned.
I have tried going into this menu and there are so many functions in there if I go to the 062596 how do I know when my adjustments have been set do i have to hit ok , I have really screwed up my magnavox..  I changed the coolant in all chambers, the set worked fine and I was just trying to get the blue fringe out of my picture.  Do you have any tips for getting my good picture back.  thanks in advance for any help you can give me..

March 6, 2009 10:17 AM

try "7" as the last digit instedt of "6" this might bring up the convergence menu. Diffrent models use diffrent edning numbers for the convergence menu, the convergence is pritty stright forward and easy to figure out once you brougt it up, by hitting "6" as the last number you were probibly in the factory setup menu you saw things like akb and other such 3 letter minomic codes. If this is what you saw then you were not in the convervence mode. try the "7" as the last digit. THE CONVERGENCE MENU IS SIMPLE, THE TV SETUP MENU IS MORE COMPLEX, ALL MODELS ARE THIS WAY. TRY THE "STATUS" KEY OR THE "MENU" KEY, THIS WILL ALSO CHANGE ENDRY MODE

March 6, 2009 12:40 PM

zapdbf said: try "7" as the last digit instedt of "6" this might bring up the convergence menu. Diffrent models use diffrent edning numbers for the convergence menu, the convergence is pritty stright forward and easy to figure out once you brougt it up, by hitting "6" as the last number you were probibly in the factory setup menu you saw things like akb and other such 3 letter minomic codes. If this is what you saw then you were not in the convervence mode. try the "7" as the last digit. THE CONVERGENCE MENU IS SIMPLE, THE TV SETUP MENU IS MORE COMPLEX, ALL MODELS ARE THIS WAY. TRY THE "STATUS" KEY OR THE "MENU" KEY, THIS WILL ALSO CHANGE ENDRY MODE
Thanks for your help, I did go into the 7 but didn't seem to be any help with all the different color issues I'm having, I am willing to try anything to fix this..could it possibly be the adjustments for the 3 colors in the back of the t.v. Do I need the manual for this t.v. to be able to go into the "6"?  thanks

March 6, 2009 12:53 PM

post a picture of your trouble, let me see how it looks

May 9, 2009 8:05 AM updated: May 9, 2009 8:16 AM

I have a 8p6044 c101 that I did a fluid change on. 062597 + Menu got me to the convergence menu. It was real easy to finish after that. Amazingly it worked on a sony universal remote I have. I wanted to thank you zapdbf for putting the codes out there. I had a hard time finding them and position rings will only get you so far.

10 Print "END OF LINE"

June 27, 2009 11:34 AM updated: June 27, 2009 11:45 AM

I have a 60" model# 9p6040 the boards inside have like an in of dust on them can i use a compressor to clean these with out damage and my picture has a haze to it like cloudy can someone answer these ? ?

June 27, 2009 1:22 PM

yes sir sounds like you have contaminated cooling fluid inside the tubes, very common problem. you can go to tvrepairkits.com and order the fluid change kit for your model or chassis, not hard to do as it comes with easy to follow directions and everything needed for this repair.
Larry, if you had a 3-D looking picture in the past or now, you will need the convergence repair kit also.
Larry

"Those who do not know their opponent's arguments, do not completely understand their own".**For complete TV repair kits including parts goto www.TvRepairKits.com

June 28, 2009 5:23 PM

CRT coolant change and advanced convergence - how to


I documented the procedure I did on a Philips 55" rear projection 55p916

http://tinyurl.com/lmp6eu
CRT coolant change procedure

http://tinyurl.com/l7bd7r
basic and advanced convergence

August 6, 2009 10:08 AM updated: August 9, 2009 3:22 PM

I have the same reddish-orange picture on my Philips Magnavox 60". I bought a fluid kit, but was wondering why everyone says the red fluid doesn't need changed. Thanks for posting the instructions to help with the fluid change... I hope I can do it without any problems!

August 25, 2009 9:06 PM

The problem is with bacteria growth in the fluid, the bacteria does not like the red light, i likes the blue tube the best so it will be the worst, green will need it sometimes, but it is a good idea to change both.

Discussion:    Add a Comment | Back to Top | Comments 1-25 of 79 | Latest Comment | 1 2 3 4 Next »

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