Question about JVC AV-48WP74 48" Rear Projection HDTV-Ready Television

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Red Lines Bouncing on my Screen

I read a few solutions on how to fix this problem but how should I go about fixing them. I am not a handyman or TV tech. Should I buy the parts online like suggested and get a TV tech to my house or what? Thanks in advance.

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  • 4,402 Answers

What is the fix? there is high voltage inside a tv if your not careful you could get hurt,
the other problem i have with DIY is they make it worse then what it had to be so i have to charge them double of what would have been a simple repair, or not repairable at all.

Posted on Jan 06, 2008

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Posted on Jan 02, 2017

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1 Answer

I have a 55 in Hitachi rear prjection tv and the horizontal and vertical lines wont go straight. How do I fix this problem


Please do us a favor and rate this solution after reading.

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. Repair kits with instructions are also avail from 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

Feb 19, 2011 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

I have a large sony hd read projection / a few days ago - i started getting faint green lines that are arched - higher in the center - symmetrical, an about 1.5 inches apart - a few times , the tv has...


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 | Sony KP-57WV700 57" Rear Projection HDTV

1 Answer

Red lines, blurry picture


try this link. It fixed my sony.
www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html

Sep 29, 2009 | Sony KP-51HW40 51" Rear Projection...

2 Answers

Red green lines across my screen on 51 inch tv hdtv


If you cannot align those crosses, then the convergence section is damaged. should be repaired by a qualified technician, its a big job.

Jul 20, 2009 | Philips 51PW9363 51" Rear Projection...

2 Answers

Red lines on Sony KP51HW40 Rear projection TV


Yeah, seen that more times than I shoulda in the last 4 years. The red picture tube has a cathode to heater short. That means it's no good. That red picture tube is no longer availible. But all is not lost. There is a company that rebuilds those tubes reasonably. Most reputable tv shops will know this. The ones I've done cost around $450 out the door. One minor hitch is that with all the shipping involved the job usually takes about three weeks. That can be expidited but then the price goes up.

May 28, 2009 | Sony KP-51HW40 51" Rear Projection...

5 Answers

Panasonic PT-47WX53 does not turn on


Yes, I did try to use the power button on the TV itself. That did not work too. Yes, there is blinking red light too. I searched through several sights and found out that it is an issue with the IC 4511. I could not find a place to buy the chip.


By the way, our local TV dealer asked for $400 to fix this issue. I had already spent $400 on a different repair on this TV, 6 months ago.

Any suggestion/advice would be very helpful. Thank you again for your response.

Feb 18, 2008 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Horizontal lines and screen bounce


These sets have capacitors that will go bad, but without a good ERS meater that tests these in curcuit you could be spending a lot of time doing nothing, But the most common is to find the 9 volt reg on the signal board and change all within a 2 inches of that regulator

Feb 07, 2008 | Mitsubishi VS-50605 50" Rear Projection...

1 Answer

My big screen...


I think your convergance ic are going...
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

or you can send in to prtcorp.com to have repaired

Jan 03, 2008 | JVC AV-48WP74 48" Rear Projection...

5 Answers

Red lines on Sony KP51HW40 Rear projection TV


cold solder on yhe red crt drive.u can find it at the back of red crt try to solder cold joint..or much better if u can refresh all the solder joint. also ,a corrosive terminal of red yoke might also be the culprit. hope this help u...

May 10, 2007 | Sony KP-51HW40 51" Rear Projection...

7 Answers

Light blinks 8 times


Best Solution by Guest worked!!! Great job and Thank you!

Nov 14, 2006 | Sony KP-51HW40 51" Rear Projection...

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