Question about Akai PT5598HD 55" Rear Projection HDTV-Ready Television

1 Answer

Change CRT coolant in AKAI Pt5598HD

Is it necessary to discharge the CRT in an AKAI PT 5598HD in order to remove the blue tube, clean and change the coolant? The set has been unplugged 2 weeks

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 184 Answers

The CRTs in modern TVs do not hold a charge because the HV circuit shunts it to ground whenever you power down the TV. You can clean the lens of the CRTs but you can't change the coolant or should you even try. You'll notice that its sealed from the factory. If you suspect a problem with the coolant or that it has dried up or leaked out, you must replace that CRT.

michtech

Posted on Feb 20, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

The color goes out on my panasonic PT-47WX49E TV.


Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
  • 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.
  • TV shuts off after powering on. The power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg
69189a5.pngSOLUTION #1

What you will need to do is convergence. You can get a repair kit from TvRepairKits.com . It includes replacement parts,step by step instructions, support, etc.

Common 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

69189a5.pngSOLUTION

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

May 11, 2012 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

PT51HX40B seeing shadow


Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
  • 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.
  • TV shuts off after powering on. The power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg
69189a5.pngSOLUTION #1

What you will need to do is convergence. You can get a repair kit from TvRepairKits.com . It includes replacement parts,step by step instructions, support, etc.

Common 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

69189a5.pngSOLUTION

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

Feb 12, 2012 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

I have no blue adjustment and my picture looks very funny


Please do us a favor and rate this by cliking the thumps up icon located here >>>>>>

Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....



  • 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.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg
69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Common 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

69189a5.pngSOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Please do us a favor and rate this solution after reading

May 19, 2011 | Akai PT5598HD 55" Rear Projection...

1 Answer

The convergence board has a +20V & -20V input. The +20V is OK, but the -20V measures about 4.5V when the cable is disconnected from the convergence board. I could not find any blown fuses but R858...


Replace R858 and R859...They also go bad frequently when the STK chips fail.

For everyone else...

All projection TV sets have two very common problems. One is convergence ( 3D/Warped video or dead set) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. In some cases the TV will also not show any video. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....


  • 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.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg

Common 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

69189a5.pngSOLUTION

You can get the correct parts, step by step photo instruction guides, and support from www.TvRepairKits.com or click here

Feb 23, 2011 | Akai PT5598HD 55" Rear Projection...

1 Answer

Where are the convergence ic's located on a Panasonic pt-56hx40?


On the board on the left...

All projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

  • 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.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg

Common 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

69189a5.pngSOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jan 09, 2011 | Panasonic PT-56HX40 56" Rear Projection...

1 Answer

How do i change the


Order a copy of the service manual from Philips. It is not practical to write up such a procedure in an email.

After changing the coolant the projection tubes will require a complete alignment. You will require the necessary test generator, training, and tools.

Jerry G.

Jun 07, 2008 | Projection Televisions

1 Answer

Green picture


The red tube is bad . There are three crt tubes in set red green and blue. your red tube is bad. cost if you where to bring it in to tv shop would be around 450.00 and tubes
are sometime not in stock anymore..


i hope this helps doctor video

Apr 21, 2008 | Akai PT5598HD 55" Rear Projection...

1 Answer

No image in blue gun assembly


the fluid in the bule gun is cloudy therefor the image you need to replace the fluid (coolant) inside the gun. the fluid is toxic (eytholene glycol). so have a tech do this for you. the repair may cost $ 325.00 or so.

Feb 22, 2008 | Akai PT5598HD 55" Rear Projection...

2 Answers

Projection tube relpacement gel


Here is a link where you can order the CRT coolant for your Projection tubes,
http://www.matelectronics.com/cgi-bin/ss000001.pl?SS=coolant&PR=-1&TB=A&SHOP=&ACTION.x=23&ACTION.y=14
heres how you change the coolant,
It's best advised to change the fluid with the tube out of the set. Some guys in the shop like to do it on-board but personally I can do it just as fast by pulling the tube. Removing the tube is no big deal, after removing the front screens and back cover you'll have to pull the crt socket board off. This is probably the hardest part since Philips puts a glob of RTV between the socket and the tube, as you're pulling down, gently wiggle the board, it will pop off. You'll have to pull the HV anode lead out of the HV block on the LSB board in the back. Unplug the convergence plug for the particular tube you're changing as well as the Yoke plug. There are normally 2 ground wires connected to the backside of the CRT metal shielding. Those have to come out. After removing the 4 1/4" screws holding the crt down, slowly remove the CRT. BE very careful that you don't bang or bump the certering rings when you remove the tube. Those are a pair of rings around the neck of the crt with tabs on them. They're usually RTV'd down but they can be moved. If you move them you'll have to recenter the tube.

You'll find the plug on the top of the coolant chamber, twisting 180 degrees loosens it so you can remove it. Careful, there's a small white washer you must keep and it tends to fall and can get lost. Drain your coolant into a container like a kitty litter container. After the fluid is drained, removed the 4 screws holding the lens on and clean the inside of both the lens and CRT coolant chamber with a rag. Reinstall the lens. Sit the tube upright, begin slowly filling the chamber back up with the replacement fluid until it reaches the very top. Reinstall the cap with rubber gasket washer and tighten 180 degrees. Clean any coolant on the outside of the tube off, you don't want any of this stuff dripping down into the set.

Reinstall tube the same way you removed it. As long as you didn't move those centering rings, any convergence adj. should be very minor. Proceed to do the same to the rest of the tubes.

Normally the blue tube dirties the worst and fastest. The glycol based coolant is extremely sticky and corrosive as well as conductive. If you do the coolant change in the set and you spill any coolant on the PC boards, STOP WHAT YOU'RE DOING AND CLEAN UP THE SPILL IMMEDIATELY! AS I said, this stuff is conductive and will short circuit the boards it's spilled on quickly.

If you're not comfortable doing this call a pro.

Jan 23, 2008 | Philips 55PW9363 55" Rear Projection...

Not finding what you are looking for?
Akai PT5598HD 55" Rear Projection HDTV-Ready Television Logo

Related Topics:

311 people viewed this question

Ask a Question

Usually answered in minutes!

Top Akai Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

seerads

Level 2 Expert

77 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

Are you an Akai Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...