Question about Sony KV-27XBR45 27" TV

1 Answer

Sony 27XBR45 picture blue at first and then later goes to color

I suspect a power supply problem since the tube still goes to full color after a while, but is blue for a long time at first and is taking longer and longer to go to full color. And now when it does it still goes blue from time to time for a few seconds. A, I correct and if so do you know where I can get a power supply

Posted by on

  • 1 more comment 
  • SteveinMD Nov 13, 2007

    Hey thanks, it is blue all of the time now unless I switch channels, then it is full color for an instant and then back to blue. So a bad blue gun will work when you switch channels? Please let me know!

  • SteveinMD Nov 14, 2007

    You are great for helping, thanks. So, it looks like I need to get this fixed or buy another tv, do you think it's worth it on this tv as it is 12 years old?

  • SteveinMD Nov 14, 2007

    Hi I called a tv repair shop and they said the XBR does not have seperate guns, they are all enclosed inside the picture tube - and then said it does not sound like that is the problem but he was vague, some other issue he said may be the reason...

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,694 Answers

Sounds more like bad blue gun in CRT. A tv shop with a
good quality pix tube checker / rejuvenator may give some
temporary help......................T.

Please rate this solution..........

Posted on Nov 13, 2007

  • 1 more comment 
  • Vista Electronics Nov 14, 2007

    When you switch channels,the video is momentarily interrupted,

    or blanked, allowing normal pix / color......There is also a blue

    video driver circuit but w/o actual voltage readings from CRT

    pins........................?.............................T.

  • Vista Electronics Nov 14, 2007

    I think it is time to part company with ol' faithful !......



    Please rate this solution.......Fixed!

  • Vista Electronics Nov 14, 2007

    I quote Myself = "Sounds like a bad blue gun IN CRT"=====

    There are three "guns" INSIDE CRT= red,green and BLUE.



    I quote myself again=" There is also a blue video driver circuit

    but w/o actual voltage readings from CRT pins.......??"



    ALSO,the video MIGHT be cutting out, then tv goes to blue

    screen......



    IF YOU WANT MORE INFO, my recommendation is PAY a

    reputable shop for a written diagnosis of facts, not educated

    guesses based on experience,which is the true definitionof an



    ESTIMATE ! Sign me Turned BLUE, out..T.

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Sony trinitron KV-32S26 While watching the tv it went POP and the picture went pop. Is the picture tube shot?


not really..maybe an overloading of the secondary power supply could create this problem..check first the horizontal stage circuit for shorted component..before suspecting the picture tube

Jul 17, 2011 | Sony Televison & Video

1 Answer

The tv is at least 17 years old.The blinking red light blinks 5 times ,then the tv picture goes off . The voice is still on


Five blinks is the error code for an AKB (auto kine bias) error. What this means is that the set isn't able to balance the three color guns (red, green and blue) of the picture tube properly, and it's blanking out the screen.

To get the proper colors, the signals for the three colors need to be balanced, and Sony sets have circuitry to do this automatically. Other brands don't, and when they go out of balance you see a picture that starts to show tinting or colors that are off. As the picture tube ages, it gets harder to adjust the balance until finally the AKB circuit can't anymore, and poof, the picture goes away. With a 17-year-old tube, it's not surprising.

There isn't anything that can be done to fix the picture tube, it would need to be replaced. But the cost of the tube and the work required to get it set up after installation makes it completely uneconomical to repair this TV. A new picture tube is nearly $200. Then special tools are required to set the tube up (a process called convergence), so you'd need to find someone to put it in, and possibly pay to have the old one disposed of. A new 32-inch LCD set is around $350 now. Treat yourself to a new one.

Jan 01, 2011 | Sony FD Trinitron WEGA KV-27FS120 27" TV

2 Answers

Turns on for 30 sec then goes bright blue and goes back into standby. turn back on it does it agian


This is blue CRT problem in tv as it is rear projection tv that has three CRTs red-green-blue inside to project color picture on front screen.
Blue CRT (tube) will be replaced to fix the issue and it is job of Pro because lots of adjustments are required after replacement of tube.
Local tv repair shop will help you for that.
Thanks

Oct 02, 2010 | Sony KP-51WS500 51" Rear Projection...

2 Answers

Tv keeps turning itself off and the white in the picture looks alittle off.


To get the right colors, especially a plain white, requires the right mix of red, green and blue from the picture tube. Sony TV sets have a circuit called AKB that automatically keeps the picture tube balanced by adjusting the signals to it. If that balance can't be achieved it shuts off the picture. This may due to tube aging so one of the color guns is too weak to adjust, or failure of parts in the AKB circuit itself. If the sound stays on and the power light starts blinking when the picture goes off, this is likely why.

On the other hand, if the set is turning off completely with no picture, sound or power light, the set may have power supply problems or defective parts in the picture tube high voltage circuits.

Since there are several possible causes, this set needs to be checked by a technician who can diagnose the problem and decide what needs to be done. It's not a simple thing I can point to and say "change this part". If the picture tube is the cause, it's better to replace the set. Otherwise get an estimate, then decide whether to fix or replace.

Apr 04, 2010 | Sony FD Trinitron WEGA KV-36HS20 36" TV

2 Answers

Screen goes all blue


if it is a KP65ws500 it is one of a group of sets made by Sony where all the picture Tubes(set has a RED, Green, and Blue Tube.) ARE BAD. Most of these sets had all three tubes replaced during a program Sony had. The tubes are NO LONGER AVAILABLE---the only way to get one is remove the tube and send it out for rebuild---most of these cost about 250-300 just for the tube.

The set is shutting down because when the screen goes bright blue it detects one of the CRT's(tubes) is pulling way to much current.

The problem with Replacing your Blue Tube is cost and----sooner or later the other two(red and green) are going to fail also.

best advice is maybe not to fix it.

I replaced dozens of the tubes in these sets when Sony had a recall and provided the tubes for free and paid for the labor etc.

I know I am not giving you good news but I do this here for free and if this has been helpful give me a vote here. Thanks!

Aug 20, 2009 | Sony KP-65WS500 65" Rear Projection...

1 Answer

Sony, tv comes on color fine, then turns red


I had the same problem with my TV, but the hue was blue. I was told that not only did I have to replace the picture tube that wasn't staying on, but I would have to replace them all because they would not mix properly. After much investigation, I found that there is an adjustment for a variable power supply to each tube that can brighten and lighten each tube. I adjusted the RED pot and my picture color issue was resolved! To access this adjustment you must remove the front panel on the TV. At the bottom corners there are two small screw covers that you must remove. Then un-screw the screws under the covers. Then pull the front panel off of the TV, (it hooks under the top near the screen so it will swing out from the bottom). Now remove the wooden panel in the center, (four screws). The pot adjustments are at the bottom of the TV. They are marked for Red, Blue, and Green. They are extremely sensitive, don't turn them much! If you over adjust you will get red, green, or blue lines on your screen. Adjust back down to remove these, (this is also the remedy for removing these lines that can appear over time). Good Luck and God Bless!

Mar 17, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Is this fixable??


Unfortunately, this sounds familiar. Many of these sony projections had bad crt's.(picture tubes). Now here is a secret I learned along the way. The short in the picture tubes is in the filament, causing that color to overpower all others and sometimes causing pix to disappear until set is shut off and back on. If you are very careful and use an insulated screwdriver, you can sometimes tap on neck of picture tube and knock debris from filament causing extended tube life. This is dangerous and must be performed with set turned on. From front of set gently tap on neck of tube(s) in question using insulated handle of screwdriver to make contact with picture tube neck. Picture will probably flash whichever color tube is contacted. Eventually, if picture stops flashing that color as much, you can sometimes get several more months out of your set without any problems. Only alternative is to try a crt rejuvinator or replace tubes at a cost of 200.00 each if avail. plus labor. Good luck, Russmann.

May 26, 2008 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Bad picture color. red LED blinks 5 times. Replace picture tube?


Definitely bad picture tube==not worth fixing......T.

Oct 11, 2007 | Sony KV-36FS16 36" TV

1 Answer

Tv picture blinks off and on


The on and off conditions is repairable and is not the tube,you should have it check out for loose conections and try not to use it or it will go bad for good and the repair will become expensive,Check power supply,horizontal driver transformer and crt board,If you are not familiar with tv service be safe and call for help.

Sep 24, 2006 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

Picture Fades


It isn't clear if the picture just loses color or the screen goes blank. If you are just losing color (picture goes to B/W) there is a problem in the color circuit and from your description it could easily be a bad solder connection on the board which decodes the color portion of the picture. If you are capable with a soldering iron and know TV HV safety, unplug the set, and remove the circuit boards and inspect (with a high powered magnifier)and resolder all suspect looking connections on the boards. You could also resolder all the connections which is more work but assures that solder joints are not the problem. If your problem is not solved at this point you are probably going to need a technician to look at it as it could be just about anything and probably would be beyond your expertise. Good luck and be safe.

Jul 12, 2006 | Sony KP-57WS500 57" Rear Projection...

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

53 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts

The Knight
The Knight

Level 3 Expert

75178 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1689 Answers

Are you a Sony Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...