Question about Samsung HCN653W 65" Rear Projection Television

1 Answer

Placement of crt coils on HCN653W

I removed one crt at a time to replace coolant, marked coil positions with silver pencil, cleaning removed pencil marks, so I used nest tube as reference, did this with all three crt's, now nothing aligns, colors are tilted away from each other and above or below each other, repair manual alignment procedure with remote won't line them up, so I suspect coil placement is problem.

thanks
TomT

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Unless you are real good at this you will be treading on thin ice you always have 1 as a reference
you replace or service 2 tubes then realign them to the reference once done you replace the third and align to the first 2. you never need to replace the coolant and it is only a job for an expert as a bad seal here will cause the coolant to leak out onto the neck and then down to the crt socket.. this will short out the high voltage and your troubles will have just begun. you will need to realign this from scratch now.

Posted on Oct 08, 2008

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1 Answer

I had to adjust the convergence. But if I turn the TV off, the convergence is off again when I turn the TV back on.


Your TV most likely has one of two 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
77ea520.jpg
f0900cb.jpg
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.

578ba6c.jpg
TV set after fluid change

65af323.jpg

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

Dec 24, 2010 | Samsung HCN653W 65" Rear Projection...

1 Answer

There is a green hue around the objects and people on the screen how do i fix this


Hope it is just cleaning take off the front screen. I think on that model remove the speaker covers, and a row of screws holding the bottom of the screen remove them. Watch the wires to the front buttons there may be a connector or two to undo. Carefully lift up and toward you WATCH THE WIRES. With a dry clean cloth wipe off the three CRT tops and the back mirror. Put back together and see.
If you still have a green hue.
Remove the screen again. With a flash light look down the CRT's if they a real cruddy down in the coolant yes there is liquid coolant in them. The red doesn't have this trouble but the blue and green can get contaminated. Also look for leaking of the coolant down on the boards. There are procedures to clean and repair leaks. Let me know.
There are a couple of focus procedures which I don't think is your issue.
Good luck Mark

Oct 02, 2010 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

I have a bacterial growth in the blue bulb heat sink fluid container. can i get replacement fluid and change it out?


Go to either newark .com or MCM.com and order projection TV coolant to replace the ethylene glycol that has become contaminated. Good luck this is a very difficult and time consuming procedure.

Jun 15, 2010 | Samsung HCN653W 65" Rear Projection...

1 Answer

Wavey picture


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
77ea520.jpg
f0900cb.jpg
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.

578ba6c.jpg
TV set after fluid change

65af323.jpg

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.

Apr 03, 2009 | Samsung HCN653W 65" Rear Projection...

2 Answers

White looks blue


usually there's a HUE setting for color problems. try to go and play with the HUE whih is usually beside the contrast, brightness....etc.

if that didnt work, then there's a problem with the deflection coils focusing, either from shipping or a hard hit. if its still under warranty send it back for repair.

let me know if that helped, good luck :)

Jan 05, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

I have a Philips Magnovox 8P6044 C101 60" rear projection tv that appears dim and slightly blurry. Waht are the suggested fixes and what would be a range of repair costs?


as far as the foggy / blurry appearance goes, you more than lkely have contaminated CRT coolant. This coolant (inside the lenses) should be crystal clear, and normally over time, with heat and time the crt's will grow a sort of bacteria in the coolant. I have drained crt's and the coolant has looked like applesauce before. Once you clean the crt's and replace the coolant with new coolant, the pic should be just as good as new!

Nov 29, 2008 | Philips Magnavox 51MP392H Rear Projection...

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...

4 Answers

Procedure for replacing fluid in our rear projection television


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.
Or if you find this difficult remove all 3 CRT tubes from the metal cradle they are screwed to & lift each tube completely out you will need to unplug & disconect all leads from the crt.
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 the exact
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 CRT
housing.
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. Go
really slow when it is almost full to minimize overflow. Wipe up any overflow immediately. There will be a small air pocket in
the 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
Ensure you use only the coolant made specificaly for projection CRTs

http://dysonmanuals.llc.nu/

Chris..

Jan 12, 2008 | Projection Televisions

1 Answer

HCN653W Yellow tint and perfect focus.


yellow tinting is a indication of browning or alge growing in what is known as crt fluid also know as glycol. although this can occur in any of the three tubes blue is your most likely tube. dirty gylcol can be changed. but is a involved repair. you have to remove the tube. remove glycol disassembel tube clean thoughly with denatured alchol. reassemble fill with clean fluid ..replace tube then align and reconverge. as a tech aournd a 2 hour job
the dirty glycol can also cause the perfect focus to fail as the sensors cant "see" through the fluid. this is a very common problem on these units

Jan 08, 2008 | Samsung HCN653W 65" Rear Projection...

2 Answers

Blury picture, convergance problem


What you're describing is probably contaminated coolant in the crts. Between the outer part of the crt and the lens is a chamber filled with a coolant (ethyl-glycol) which can become contaminated and cause blurred picture. I'd strongly recommend taking this to a shop the procedure for changing these is a bit beyond the layman level.
Remove Crt assembly. Mark the Crt lens position for accurate reasssembly.
Mark the centering ring's postions to make easier realignment and carefully remove lens assembly by removing the four torx screws. Keep Crt assembly vertical so you won't leak the fluid...
Remove the inner lens by carefully prying up on the edge of it.
Dump out the fluid in the sink and wash the face of the Crt and chamber with water to remove all the fungus and crud. Flush the chamber with isopropyl alcohol to kill all the fungus and dry thoroughly.
Reassemble inner lens and outer lens and tighten all four torx screws.
Remove side filler plug and fill chamber with approved new Crt coolant, reinstall and converge.
Repeat this procedure for the other two Crts. It will need this done whether it looks clear or not !! The green and blue Crts in this unit are prone to this failure.
Hope this helps
Bill

Nov 14, 2007 | Philips Magnavox 51MP392H Rear Projection...

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