20 Most Recent Vizio SV470XVT 47 in. LCD TV Questions & Answers

T con board is responsible for image on screen as well as any anomalies present.

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.

If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

Check and replace the back-light inverter baord.

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. Surf the site with patience. Pull up older posts. http://electro-medical.blogspot.com/ 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.

T'Con board fault. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/ Screen-shots to defective LCD panels are given. You can see and compare to that to your TVs', and can make sure about the fault to an extent.

This is a power supply and/or possibly inverter(s) board bad capacitors. Since the audio is affected it could be both. Be aware that attempting to repair it yourself could cause irreparable damage to your TV.

Since sensor is receiving the signal of other inputs, there is nothing wrong with it. This looks like an incompatibility issue. You may have to retry using the original remote control.

Check and replace its main power regulator board.

The problem could be the inverter board, but it could also be that one or more of the backlanps is drawing too much current thus causing the inverter to fail. backlamps draw more current as they age. Many in the profession also recommend replacing your both the master/slave inverters together in a set!

Hello,

This sounds as if it could be a ballast problem, or a switching power supply transformer problem. Both of these can produce this sound. I would suggest that you have a qualified TV technician repair this set due to the dangerous voltages and currents that could be present. In my experience with these TV I would have the technician pay special attention to the power supply board and the backlight/inverter section which includes the ballast used to fire the backlight.

I hope this helps,

Thank you,


Shuttle83

http://www.electron-age-technologies-llc.com

The TV has backlight problem. For more details type in this site name "Electro-help" (DO NOT copy and paste the site name from here. It may lead you to wrong place) to search box of your search engine [not in the address bar of your browser], and press "Enter". It is an electronic equipments service help site.

Note the position of hyphen in between words in site name. The site will appear as it is in web; subtitled as Service help to electronic home entertainment equipments.

Pull up older posts.

You can locate this site, either at the bottom part of first search page, or at the top of second. Detailed descriptions are there to help you.

If the same issues comes up with all the inputs then it is possible that the main board/processor encounters with an error and shuts off.the possibility of a dry connection or a thermal related issue cannot be ruled out. You can remove the panel and use a good ventillation with a blower fan to see if the fault timing changes. If so check for heat on the board to confirm the suspected component.

Maybe the problem is in the monitor source setting. Look for "Source" button and press repeatedly.