20 Most Recent Sony BRAVIA KDL-52W4100 52 in. LCD HDTV - Page 8 Questions & Answers


Most probably the vertical deflection amplifier is failing. The most common part that fails is the vertical output transistor.
The set is too old to find documentation on part numbers and descriptions. Probably the part is no longer available and you will need the assistance of someone who can help you find an equivalent transistor that will do the job.
Of course, without testing we cannot be certain the failure is the output transistor. It could be from something else such as the voltage regulator that feeds the dc line to the vertical section. Could be the vertical synchronous level that goes too low to trigger the vertical sweep generator.

Other bad parts in vertical deflection circuit though there are not that many parts that would kill the deflection entirely.

Loss of power to vertical deflection circuits. Check for blown fusable resistors/fuses and bad connections.

Loss of vertical oscillator or vertical drive signals
Good luck.

Sony BRAVIA... | Answered on Jun 01, 2010

Ensure that the TV plug connected firmly to the mains power supply, if nothing happens,
It is require of you to open the cover of the TV to check for blown fuses, if found, do replace with a new one of the same current rating.
if otherwise your power supply board is dead, u know basic electronics’ and soldering? Most of the times, the power suppply board just have dead leakages gases capacitors.These capacitors alway bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get ur tv power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole rerfurbish power supply board for the replacement.

Sony BRAVIA... | Answered on May 31, 2010

buzzing is a symptom of the power transformer going out. if not repaired it will smoke then at times catch fire. have fixed/replace the transformer.

Sony BRAVIA... | Answered on May 29, 2010

I suggest you do firmware update first. Go to http://esupport.sony.com/US/perl/swu-list.pl?mdl=KDL42V4100&LOC=3#div_pos_30 download the software. If not work, replaced the main board.

Sony BRAVIA... | Answered on May 28, 2010

hi, that was a good television, go for it that price

Sony BRAVIA... | Answered on May 20, 2010

Press "wide mode" on TV remote until it is on "full". Check for same on set-top box.

Sony BRAVIA... | Answered on May 02, 2010

Sony BRAVIA KDL-52W4100 52 in. HDTV LCD TV
We need our Sony 52W4100 Bravia screen replaced. What is the cost?
Part # 1-802-791-12, cost approx $2,251.54 + core
Parts reference: Andrews electronics, 800 289 0300.

Sony BRAVIA... | Answered on May 02, 2010

If lines at 1/4 of bottom part of screen are across the screen then it could be T-Con or LCD Panel problem and if lines stop in halfway then its confirmed LCD panel problem.
Below exploded view (taken from service manual) shows T-Con board location in this tv.
Hope this info will help you.
Let me know if you have additional question.


Sony BRAVIA... | Answered on Apr 29, 2010

14 blinks is a high frame rate error, you can check the LVDS cable connections first, if not work replace the T-con board, if still not work, replace the panel, but it is not worth the money to repair.
There are two different t-con boards for this model, part # 1-857-132-11 cost $270, and 1-857-240-11cost $200. It depends on the serial #, you need to make sure which one is for your TV.

Sony BRAVIA... | Answered on Apr 29, 2010

  1. hook up your cable box to another TV check it.
  2. reset the TV by press and hold the [^] on the remote and press [power] on the TV.
  3. Do software update.
  4. replaced the main board,

Sony BRAVIA... | Answered on Apr 27, 2010

Check the transformers,and the capacitors.Zoom in the website picture of the board u going to buy,and ur power board.If these commponnents are the same vale's the board should have the same functions.

Sony BRAVIA... | Answered on Apr 26, 2010


Look into getting the main power supply replaced

Check the web for someone near you

Sony BRAVIA... | Answered on Apr 26, 2010

Replace the main board (BU board), there are two Part# A-1641-948-A and A-1547-091-A depends on the serial#, cost around $300.

Sony BRAVIA... | Answered on Apr 25, 2010

Unplug the tv about an hour to let it reset itself.Replug,reset everythings in ur tv menu back to factory setting.All ur functions on the Tuner board should work again.Not than,ur Tuner board is defective,have all those shorted HDMI input Hubs.The only way now it to replaced the Tuner board.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Tuner board for the replacement.

Sony BRAVIA... | Answered on Apr 21, 2010

Press the "WIDE" button on the TV remote a few times to change the TV wide mode settings until you get it to "FULL". If that does not fix it, look on your Cable box remote for an "Aspect" or "Format" button and press it a few times. I hope this helps.

Sony BRAVIA... | Answered on Apr 19, 2010

NOT unless it is a DUAL frequency Standard, as Europe is PAL & SECAM, USA is NTSC. Also the HERTZ is different too 50Hz Europe, 60Hz USA, so really NO. IF it would work, it would have an international power supply, meaning it was usable any where in the world. and also it would have a multi tuner. Otherwise it will NOT go.

Sony BRAVIA... | Answered on Mar 15, 2010

The only answer is to trade your TV with my old 13" RCA with the rotary channel selector knob. You obviously were not prepared for the incredible performance and effects today's technology can provide.

Let me know when you are ready to swap.


Sony BRAVIA... | Answered on Mar 09, 2010

Not finding what you are looking for?
Sony BRAVIA KDL-52W4100 52 in. LCD HDTV Logo

318 questions posted

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76416 Answers

Muntejaya Ginting
Muntejaya Ginting

Level 3 Expert

10422 Answers

Nasir Muhammad
Nasir Muhammad

Level 2 Expert

229 Answers

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

Answer questions

Manuals & User Guides

View Most Popular


  • BRAVIA Sony

Most Popular Question

anyone know stand off sony bravia tv

  • Televison & Video