Question about Mitsubishi WT-46805 46" Rear Projection Television

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PCBs/Fluid OK, so, where are the PCBs and if I see fluid, what do I do about it? Are there replacements and how much $ do you think we're talking about? Thanks! Rudy

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THE BOARDS ARE NOT FOR SALE, YOU HAVE TO REPAIR OR CAN SEND TO FACTORY FOR REPAIR.....TIME.....MONEY!

FLUID / ELECTRONICS.......... BAD NEWS.

BUT DO HAVE THIS CONDITION???

Posted on Aug 07, 2008

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Posted on Jan 02, 2017

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THE COLOR ON THE TV IS STARTING TO GET ORANGE


The picture is formed from three lamps in the base of the TV. These lamps have a fluid filled lens on each of them and the Glycol in this fluid degrades after time. This fluid can also have a mold or algae growing in it. Check the lamps visually first BUT DON'T touch the driver circuits ( this would be very bad for you) with them turned on and off. If you need to change the fluid, be very careful as leaks happen very easily. If you get any of this fluid onto the driver board it will damage the tracks etc VERY QUICKLY. You must replace the fluid with the correct fluid at the correct level and amount and wash your hands afterwards as Glycol is a poison. I do not think that this is an electronic fault as the orange tinting leads me towards a fluid issue.

Nov 30, 2009 | Akai PT4298HD Rear Projection Television

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Oil leaked from rear projector tv's central projector


The substance that you are looking at is ethylene glycol, which is better known as anti-freeze, but it is optically clear. If it leaked on to a circuit board, this is not a good sign. I have not been able to repair a set that has been contaminated with this fluid. If your set still works you can replace the fluid and the set will be fine, do not run the set without this fluid as it will cause the CRT to overheat and may crack.

I usually order my parts from Andrews Electronics in California, they will have the OEM components that you will need.
Their site is http://www.andrewselectronics.com/welcome.aspx
And their phone number is a 24-Hour Order Desk: (800) 274-4666
I recommend the phone order so you can talk to the person about type of fluid that you need. I think it is referred to as CRT coolant, and is sold by the bottle.
I hope that this helps
Thanks for using fixya
If you need any further assistance please respond to this post.
asnowman

Oct 05, 2009 | Televison & Video

2 Answers

I was just given a samsung hcp4752wx/xaa. The


OK, Its always best to replace the lens assembly if its not preforming well. never dump the fluid. just replace the lens. As for the double images and the misalignment of the blue convergence line, this is caused by a faulty convergence chip that is located on the convergence board. you will need to replace this board in order to restore proper convergence performance.

May 16, 2009 | Samsung Televison & Video

4 Answers

Red CRT board not working. Blue seems to be going also.


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

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TV set after fluid change

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2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Jan 30, 2009 | Philips 55PW9363 55" Rear Projection...

1 Answer

I think I have the same TV darker color not as sharp


the fluids do need to be changed occasionally.hes right about that.if you allow him to do it he will clean everything associated with the tubes

Dec 29, 2008 | Philips 60PP9202 60" Rear Projection...

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What are they talking about when they say you need to change the fuild in your tv. I have 60" philips magnvox that is about 10 years old


The projection TV sets have a coolant that surrounds the CRT picture tubes. It is used to keep them cool when they are lit up. After 5 or so years the fluid gets cloudy and needs to be drained and replaced. If you do it correcly your set will have the best picture you have seen in a long time. Check with the site www.TvRepairKits.com for the fluid and a photo instruction guide.

Dec 25, 2008 | Philips Magnavox 9P6034C 60" Rear...

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Foggy picture


That is your coolant projection fluid make sure you clean up any that may have went on chassis ect.....refill fluid in lense make sure it does not leak and try again, tube should be same as before, when chaning fluid in lenses always turn set on look into lenses if clear it is ok if dirty looking then change fluid.

Dec 24, 2008 | Philips Magnavox 51MP392H Rear Projection...

2 Answers

Blue convergence


SINCE YOU HAVE REPLACED THE CIRCUIT BOARD,THE NEXT STEP WOULD BE CHECKING VOLTAGES GOING TO THE CONV. BOARD COMING FROM THE POWER SUPPLY CIR. BOARD.....IF NO VOLTAGE METER,,SOMETIMES, THERE ARE FUSES ON THE POWER SUPPLY CIRCUIT BOARD THAT SUPPLY THE NEEDED VOLTAGES FOR THE NEW BOARD YOU JUST REPALCED...UNPLUG THE SET,,CHECK FOR A BLOWN FUSE----I THINK THERE IS 2 OF THEM--ONE FOR A NEGATIVE VOLTAGE AND ONE FOR A POSTIVE VOLTAGE FOR THE CONVERGENCE BOARD..GOOD LUCK--SORRY, MIGHT NEED A TECH...TUNICA

Oct 30, 2008 | Samsung HCN653W 65" Rear Projection...

1 Answer

Replacement of fluid in green gun of Mitsubishi vs5043


Fluid is CRT coolant fluid, you can purchase from sites like MCMelectronics, tritronics, bluestar-online, etc. You will have to know what you are doing to change, I can help in live chat!

Oct 08, 2007 | Mitsubishi VS-60609 60" Rear Projection...

2 Answers

Maintanence question obout my Sony rear projection.


i,m not a tech but i,ve been told by a techinican that those tubes do have fluid and it,s not an easy fix to change the fluid i was told the tube has to be removed and a tech told me it would run around 200.00 by the time the tech removes it puts the fluid back in and reinstalls it and after it,s reinstalled the convergance has to be reset that,s what realigns the colors back to their correct position and i,ve heard this isn,t an easy job so i,d probably get a techinican to fix it but that,s up to you someone might have an easier opinion but the tech i talked to is one of the best thanks and maybe you can help me i have a blue tube on my big screen tv that wont light upcould you give me some insite as to what you know about a projection light that you said that may need changed think that may be my problem your welcomed to call me about this at 270-566-4327 anytime soon as possible thanks

Nov 26, 2006 | Sony KP-51HW40 51" Rear Projection...

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