Question about Televison & Video
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: 42" Vizio - no picture no sound
If the TV goes in standby, then it is in protection mode.
Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
Try first leaving the TV power cord unplugged for some times, let say one hour or so.
The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.
1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.
2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.
If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.
If you are in situation 2 , then there is an internal fault.
If under warranty contact the manufacturer ringing the number on the user manual
If you want to repair at your own expenses, just locate any good qualified repairer.
If you want to DIY you find parts here,
All: Appliance parts, electronics parts & more from PartStore.com
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LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |
On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem
Posted on May 04, 2009
Hello, I have a Vizio 42 in screen in perfect condition if anyone is still interested. The back lights went out in the TV and I decide I wanted a bigger one anyways. I am will to sell very cheap and have already removed it from the TV as I was getting ready to list it on eBay. The parts are already listed. It's a Vizio 42 in VW42L HDTV10A. Anyone interested e-mail me at email@example.com I will ship via UPS as well.
Posted on Sep 01, 2010
SOURCE: vizio vo47L 47" LCD. No
0ne of 3 has failed:
(in order of probability):
1. Backlight inverter
2. Power Supply
More specifically on #1 and #2 - capacitors either bulging, leaking, or exploded.
Please seek the expertise of an experienced TV repair technician - as they contain potentially lethal voltages that must be properly discharged before work can begin.
Posted on May 27, 2011
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