Question about Sony BRAVIA XBR 52 in. LCD Flat-Panel HDTV

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XBR 4 vertical black band, ghosting/smearing, getting worse.

At a year and 2 months from new, my KDL52XBR4 developed problems. About 3 weeks ago on startup, there was a shrill whistle for about 2-5 minutes then gone - noise never came back. About 7 minute after this first morning startup and thereafter, a fuzzy black band instantly appears in middle of screen, 1 foot wide. Rest of screen gets darker. Perimeter starts to go black. A few days later, also started smearing, ghosting, not refreshing on right perimter, overlapping images. So it's gradually getting worse. After 5 minutes, TV snaps to perfect, no problems at all for the rest of the many hours the TV is on. Qualified technician looked at malfunction for 5 minutes, said LCD screen with attached `TCON(?)" needs to be replaced. Cost $2900, Sony will only help $900, so I'm out $2000, with only a 90 day warranty !! In my past experience (I'm retired mech./chem engineer), power supplies provide different voltage levels to radio/TV's. If voltage levels are off until defective power supply is replaced, warms up, or starts working right, won't that throw off flourescent back light starter and voltages running circuitry ? I've had only one diagnosis, and hate to spend $2000 on a 10 minute diagnosis. He didn't hook up any analysis machines, and was adamant about problem. What's a TCON ? Please advise. Thank you, Jeff

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  • murchison Apr 24, 2009

    mine is has the same problem. upon cold start up, the left side of the screen is blurry, ghosting/smearing, flickering. JUST the left side. problem started out doing this for about a minute or two, now takes 20 minutes to come out of it. once it does, it is fine. AND, if i turn it off and then immediately back on, the picture comes up fine. seems like once things are heated up thers no problems. i bought mine in january '08 and problems started 13 months later. anyone have any more input?

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Hi, I have a similar issue which is progressively getting worse. My TV is on a sliding mount, and interestingly enough, sometimes I can "jilt" it by hitting it and it clears. This seems to me to be a connector problem, where heat (thermal expansions, electrical resistances) can introduce degrading signal. Now if I could find a manual on how to take this damn thing apart.......Certainly does't solve the warranty issue, but at least gives a reason for one to kick their TV.

Posted on Jun 18, 2010

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Print problem sir in 2420L


In the process used printer, will be inevitable printed page by your printer have the bad quality prints. For example: Toner specks, Light image, Vertical line, Dropouts, background, Toner smear, Vertical black line and band, Vertical white line, Background scatter, Black pages, Loose toner, Horizontal stripes, Ghost, Uneven Density, poor fusing.

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Canon irc4580i print dark problem


In the process used printer, will be inevitable printed page by your printer have the bad quality prints. For example: Toner specks, Light image, Vertical line, Dropouts, background, Toner smear, Vertical black line and band, Vertical white line, Background scatter, Black pages, Loose toner, Horizontal stripes, Ghost, Uneven Density, poor fusing ...
The common print quality problem Canon IRC-4580 printer
Currently, The Canon IRC-4580 is the laser printer have high speed, easy to use, friendly for user and printing clear text.
However, we can not avoid the damage of some components of the printer when used.
In this article, I will introduce some basic errors with printing quality problems of Canon IRC-4580 printer and "How to fix it".
After viewed artical, you know:
- How to fix (repair/solve) Vertical line (black or white) in Canon IRC-4580 printer
- How to fix (repair/solve) Poor fusing (loose toner) in Canon IRC-4580 printer
- How to fix (repair/solve) Uneven Density in Canon IRC-4580 printer
- How to fix (repair/solve) Light image in Canon IRC-4580 printer
- How to fix (repair/solve) Ghost in Canon IRC-4580 printer
1. Fix print quality problem "Vertical line" for Canon IRC-4580 printer How to fix print quality problem Vertical line
This plobrem "Vertical line" is usally error of Canon IRC-4580 printer. For this "Vertical line" error, technicians divided into two smaller error are: Vertical black line and band and Vertical white line.
Description:
- Vertical line and band: On the printed image appear some straight thin black vertical.
- Vertical white line: On the printed image appear some white vertical voids.
Error location:
- Surface of the charge roller
- OPC drum
- Cleaning blade
- LSU unit
- Developing roller

Cause of error "Vertical line" on the printed page:

- May be surface of charge roller scratched or dirty by toner powder.
- May be have some grooves on the OPC drum.
- May be cleaning blade is damaged.
- May be LSU window or LSU lense has dirty.
- May be surface of developing roller has scratched.

How to fix(repair) "Vertical black Line and Band" for {{SPkey1}} machine:

- Replace the charge roller of toner cartridge.
- Replace the OCP drum.
- Replace the cleaning blade
If printed page are not improved
- Clean the LSU unit by soft cotton cloth and try to print. If Vertical line is not clear on the printed page you should replace LSU unit.
- Replace new axis developer and try to print
2. Solve print quality problem "Poor fusing (loose toner)" for Canon IRC-4580 printer. How to fix print quality problem loose toner
Description loose toner: Toner is not properly fixed on paper, use to hand rubbing lightly on the printed image toner powder may be stick in hand
Error location: toner cartridge or fuser unit

Cause of error "Dark Image or black" on the printed page:

When toner cartridge is empty. You toner refilled by toner powder ware not compatible. This is makes toner cartridge components demaged and temperature of fuser unit is not enough melt to toner powder

How to fix(repair)"Poor fusing (loose toner)" on the printed page for Canon IRC-4580 printer:

With this error, you should replace toner cartridge or fuser unit to fix it.
3. How to fix print quality problem "Uneven Density" for Canon IRC-4580 printe How to fix print quality problem Uneven Density
Description: The printed page has one half light and one half clear.
Error location: Toner cartridge, transfer roller, springs, doctor blade

Cause of error "Uneven Density":

- The pressure force on the left and right springs of the transfer roller is not even.
- May be toner low also causes this error
- Doctor blade has bent
How to repair error "Uneven Density" on the printed page for Canon IRC-4580 printer:
- Replace springs and transfer roller.
- Toner refill toner cartridge Canon IRC-4580 and reset toner cartridge chip (replace new chip) or replace new genuine toner cartridge.
- Replace doctor blade.
4. How to solve print quality problem "Light image" for Canon IRC-4580 printer How to fix print quality problem light image
Description: The printed image is all light and no Ghost.
Error location: Toner cartridge, Developer, HVPS board

Cause of error "Light image" on the printed page

- Enabled toner save.
- Toner cartridge is low
- OPC drum may be faulty by strong light intensity
- Temperature in room is below than 10*C
- Bad contact caused by the toner dirty between the high voltage terminal in the HVPS and the one in the set
- Abnormalities output from the HVPS

How to fix(repair) error "Light image" on the printed page for Canon IRC-4580 printer:

- Disable toner save by change in printer driver.
- Toner refill toner cartridge Canon IRC-4580 and reset toner cartridge chip (replace new chip) or replace new genuine toner cartridge.
- Replace the OPC drum.
- Replace developer.
- After printer is power on, wait 30 minutes then start printing
- Clean up the contact between the high voltage terminal in the HVPS and the one in the se- Replace the new HVPS if the problems are not solved by 4 away above.
5. How to fix print quality problem "Ghost" for Canon IRC-4580 printer How to fix print quality problem Ghost
Description: Ghost occurs intervals of the OPC drum or transfer roller.
Error location: Toner cartridge, Developer, HVPS board

Cause of error "Light image" on the printed page

- OPC drum has fauty.
- The life of the transfer roller has been expired
- The high voltage terminal is contaminated by toner powder or

How to fix(repair) error "Light image" on the printed page for Canon IRC-4580 printer:

- Replace OPC drum
- Replace transfer roller
- If performed 2 away and the error does not clear, you should replace ganuine toner cartridge .
- Replacce HVPS board.

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Its a TAB bond Problem with the LCD. You can take apart the TV and install a rubber Bumper to put pressure on the TAB. TAB bonds always get worse... I dont know how long it will solve the issue... but u can get a little more life out of it.
Rember when working with the TV the voltages can kill!!
Heres a link to see someone fixing.
I have the same TV...same problem...common problem...unless u ask Sony.

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1 Answer

My 52inch xbr4 tv is 2 years old. Intermitently over past 2 months, when I first turned it on, I get thin vertical lines and double imaging especially over left half of screen. After a few minutes it would...


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1 Answer

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