Question about Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Sony warms up - picture slowly becomes dark

Have had a Sony KP46WT510 for about 4 years. Now after it has been running for several minutes, the picture will progressively darken. Bright scenes and white background images continue to be well illuminated, but darker or muted images become almost black with very little brightness or contrast. When it is turned back on following a cool down period a normal picture is displayed and the cycle repeats. I've performed the standard resets, refocus and confirmed the picture and brightness settings. Any ideas? thanks! Scott

Posted by on

  • 1 more comment 
  • jatadek Dec 31, 2007

    Having the same problem. Had it serviced a year ago, and problem is returning again.

  • Anonymous Jan 21, 2009

    having the same problem. on my kp46wt510.. help please..picture getting darker and darker....

  • help-09 Jan 21, 2009

    same problem..

×

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.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 3,130 Answers

You are losing screen voltage or whats called the boast voltage most likely. This is probably being caused by a bad capacitor in the sweep power supply. You will need to get a service manual as well as use an ESR type capacitor meter to find the bad capacitor(s). Good Luck

Posted on Jun 05, 2007

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

Why is the picture on my RCA tv goes slowly darker as i watch it?


Contact any service technician. Its CRT base connector socket, or, LOT is faulty. This is not a user repairable fault. Replacement to any one among component stated above, or both, might need replacement. Gopakumar Gopalan Google

Mar 05, 2014 | RCA Televison & Video

1 Answer

I have Vizio XVT3D474SV I bought a year ago, in the last week while watching TV, the screen start to flash, display becaome white with 3 black lines and after a while it becomes black (the all time the...


When the picture is dark, show a torch light on the screen from a safe distance. If you can see the picture, the backlight is the problem. Anyhow, it is better to show it to a qualified service technician.

Aug 01, 2012 | Vizio XVT3D474SV 47 in. 3D LCD TV

1 Answer

Sony Bravia model #KDL52WL130 worked fine for first year then picture went very dark for the 1st 30 minutes it was on but eventually cleared up. Now it takes longer and screen is completely blank. Sound...


I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years, some sooner, because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Dec 09, 2010 | Sony BRAVIA KDL-40S2010 40 in. LCD...

5 Answers

3 horizontal lines through screen and distortion


Yes this thing start happening to my tv too about 4weeks ago and this goes away in about 15 minutes. TV is only 18 month old and I donot have extende warranty. Please post the solution if someone has got it repaired. Thanks

Dec 28, 2009 | Sony BRAVIA KDL-52W3000 52 in. LCD...

1 Answer

Picture is dark


Adjust video settings:
  1. Press Wega Gate
  2. Select Settings
  3. Highlight Video
  4. Press + to select
  5. Adjust/increase the brightness.
  6. Press Wega gate to exit.
If picture is still dark, you need to replace the lamp again. Sony recommends that you replace the lamp:
  1. After approximately 8,000 hours of use.
  2. When the screen becomes dark or the color becomes unusual.
  3. When the lamp indicator on the front of the TV flashes.

Aug 22, 2009 | Sony Grand WEGA KF60XBR800 60" Rear...

1 Answer

Sony KV-32XB25 Distorted Picture


In most of the case, the problem is a defective LCD panel, if is it, there is not worth to fix.

Aug 02, 2017 | Sony KV-32XBR250 TV

1 Answer

Sony 60"


Sounds like your TV is not getting the right voltage. U need to get a power supply filter and then
all should be good. Not promising that it defo will, but everyone iknow who has this problem on a
widerange of makes and models have tryed this method and it has worked.
Let me know how you get on.

Oct 30, 2008 | Sony KDF-E60A20 60 in. LCD HDTV

1 Answer

Sony KP-51WS510 51 in. Dark Picture


These sets have been known to have loose welds in the picture tubes. Most likely your tubes are showing this problem.

Apr 17, 2008 | Sony KP-51WS510 51" Rear Projection...

Not finding what you are looking for?
Sony KP-46WT510 46" Rear Projection HDTV Logo

Related Topics:

112 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...