20 Most Recent Sony BRAVIA KDL-55NX720 55" 3D LED-LCD TV - 16:9 - KDL-55NX720 Questions & Answers


Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here. ..

Sony BRAVIA... | Answered on Dec 02, 2016


The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electro-medical.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Sony BRAVIA... | Answered on Nov 30, 2016


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electro-medical.blogspot.com/

If blinks continue without any pause, the main board is faulty.

Sony BRAVIA... | Answered on Jun 15, 2016


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.

Sony BRAVIA... | Answered on Oct 11, 2014


These blinks [flashes] are fault indication (Error Codes).From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it.This will make repair easy.These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times.Count it carefully.If you wish to get some details, check the site linked here.It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.Viewing it in "Mosaic" or "Sidebar" will make surf easy.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given.Surf the site with patience.

Sony BRAVIA... | Answered on Aug 09, 2014


Normally yes. Blinking twice is power protection trip. Look first for open resistor, broken fuses (and short circuits or broken transistors / ICS if thats the case).

Sony BRAVIA... | Answered on Oct 12, 2013


Hi Sherry, you can test your remote control to see if all the keys work correctly
Take your cell phone, put in camera mode and point the emitting LED of the remote control towards the camera,
press the keys, one at a time and see if the emitting LED is illuminated, if so, try the volume up key, if the light does not turn on, you could carefully disassemble the remote control and clean the contacts and the keyboard internally rubber,
Do not use alcohol to clean
the rubber keyboard, you can clean it with warm water and detergent then let it dry very well,
the contact plate, you can use a cloth with some liquid to clean the glass,
the idea is to remove the rubber residue on the contacts
then arm again and test, but you have results consult a specialized technical service
I hope you find the suggestion useful
Greetings Franco Dosil

Hola Sherry, puedes probar tu control remoto para saber si todas la teclas funcionan correctamente
Toma tu celular, pon en modo camara y apunta el Led emisor del control remoto hacia la camara,
presiona las teclas, una por vez y fijate si se ilumina el Led emisor, si es asi, prueba la tecla de subir el volumen, si no se prende la luz, podrias desarmar con cuidado el control remoto y limpiar internamente los contacto y el teclado de goma,
No Uses Alcohol para limpiar
el teclado de goma, lo puedes limpiar con agua tibia y detergente luego dejalo secar muy bien,
la placa de los contactos, puedes usar un pa?o con un poco de liquido para limpiar los vidrios,
la idea es sacar el residuo de goma que hay sobre los contactos
luego arma nuevamente y prueba, sino tienes resultados consulta a un servicio tecnico especializado
Espero te resulte util la sugerencia
Saludos Franco Dosil

Sony BRAVIA... | Answered on Sep 15, 2019


hello Dear
this is panel problem please replace panel
Thanks
M Nasir

Sony BRAVIA... | Answered on Apr 14, 2019


Aron,

To perform a reset you will need to disconnect the TV completely from power for at least 30 seconds, if this doesn't resolve your problem then you may have hardware that has expired in your device. Without physically looking at your device I can't say with certainty what your problem is, it could be your PCB. There are video's online you can visit on how to test a PCB for faults.
If you are not comfortable troubleshooting your device I would suggest contacting a local electronic repair shop near you, however I will link you to a generic instructional video showing you how to perform basic troubleshooting of your device.

Hope this helps,
Best regards


https://www.youtube.com/watch?v=qxG3hmmvkJs Testing LCD TV Power Supply BoardsSTEP BY STEP
fixya-aioep5zungdwqwtpjd23ghga-3-0_0.png

Sony BRAVIA... | Answered on Mar 08, 2019


Although I am just guessing, most Sony equipment uses metric screws. Go to a Home Depot or similar store and take the piece that you have that contains the threaded fittings and they will help you find the screws you need. https://www.manualslib.com/manual/793567/Sony-Kdl-32xbr6.html?page=7#manual This page of the manual gives some info about the screws such as not longer than 1/2" (or 12mm) to prevent damage to the set. Sony customer service may be able to supply replacement screws too.

Sony BRAVIA... | Answered on Feb 18, 2019


Go to the initial set up procedure and disable it.

Sony BRAVIA... | Answered on Feb 14, 2019


Open internal fuse or power supply failure

Sony BRAVIA... | Answered on Jan 23, 2019


Unplug from wall for 60 secounds then plug back in. See if that works.

Sony BRAVIA... | Answered on Jan 19, 2019


Press the HOME button on the remote control.
Select Settings.
Select System Settings.
Select Customer Support.
Select Factory Settings.
Select OK.

Sony BRAVIA... | Answered on Jan 18, 2019

Not finding what you are looking for?
Sony BRAVIA KDL-55NX720 55" 3D LED-LCD TV - 16:9 - KDL-55NX720 Logo

Popular Tags

10 questions posted

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76171 Answers

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1691 Answers

Ekse

Level 3 Expert

13434 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

  • BRAVIA Sony

Most Popular Question

sony bravia kdl 55nx720 tv stuck in

  • Televison & Video
Loading...