Question about Sony KV-40XBR700 40" TV

1 Answer

Sony KV-40XBR700 I have a Sony KV-40XBR700 TV. The problem is that the TV screen is black, but the volume is ok. Once in a while the tv will turn on, but once we turn it off than it wont work for a couple of days. What seems to be the problem?

Posted by on

  • Anonymous Mar 26, 2014

    tv has no picture. worked fine yesterday.

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Sony Master
  • 5,568 Answers

If the display seems normal when present, you may have what is called a 'cold solder joint,' possibly in the area of the horizontal power supply. This can be caused by normal heating and cooling of a particular spot on the circuit board that finally fractures the solder and making the joint thermally sensitive.
Most component failures, even when intermittant, would affect the display in some obvious way such as distortion, contrast, brightness, etc.    

Posted on Feb 11, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Tv input doesnt work


  1. Replace the tuner with exact type and number. After replacement, in some cases, you might have to enter its service mode options to set the AGC voltage properly. If you are no experienced to do this, contact any experienced service technician to do this work.

Jul 29, 2012 | Sony KV-40XBR700 40" TV

1 Answer

Sony KV-40XBR700 40" CRT WEGA


I too would like to know the solution to this question...we are having the identical problem and Sony doesn't seem to know how to fix it. Although, the picture from the DVD player is perfect, the pictures for cable & video games are terrible. Very frustrating!

Aug 24, 2011 | Sony KV-40XBR700 40" TV

2 Answers

KV-40XBR700, won't come on, standby light blinks 7 times.


sony KV40XBR700 tv no picture but sound is on, standby light blinks 6 times

Jul 20, 2009 | Sony KV-40XBR700 40" TV

1 Answer

Sony kv40xbr700 board bad


Part Store is good place to buy required board of KV-40XBR700

If you feel difficulty in board purchase, let me know to help you more.

Feb 28, 2009 | Sony KV-40XBR700 40" TV

1 Answer

KV-40XBR700 turns itself off, standby blinks 5 times continuously


http://esupport.sony.com/US/perl/model-home.pl?mdl=KV40XBR700&LOC=3 Ok this isn't the best answer in the world but from here you can find a service tech in your area that works on Sony products. Good luck!!!

Nov 19, 2008 | Sony KV-32V40 32" TV

1 Answer

Sony tv picture problems


plz contect me we repair lcd plasma and projection tvs
Yogesh-9811440932

Oct 25, 2008 | Sony KV-40XBR700 40" TV

1 Answer

40XBR700 picture problem.


the problem is loose contact on the pc board try to resold the cold part of the tv

Sep 28, 2007 | Sony KV-40XBR700 40" TV

1 Answer

Sony KV-35S42 35" TV


Check first for bad solder on the vertical IC, Im not sure for your set as I do not have the service manual, but it may be location IC301. If after resoldering it does not fix it you may have to replace it and you should replace the electrolytic capacitors in the vertical section. Hope this helps. Don

Jul 31, 2007 | Sony KV-35S42 35" TV

1 Answer

Picture takes hours to appear


Spounds like the b+ feed filter capacitor off the flyback that supplys voltage to the three drive transistors on the crt board is bad.

Apr 16, 2006 | Sony KV-32V16 TV

Not finding what you are looking for?
Sony KV-40XBR700 40" TV Logo

Related Topics:

201 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Standard (CRT) Televisions Experts

The Knight
The Knight

Level 3 Expert

68323 Answers

Jaime Hernandez

Level 3 Expert

2267 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

Are you a Sony Standard (CRT) Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...