Question about Neovo AG 17" LCD Monitor
Monitor stopped working. power light is flashing yellow
The power supplies in inexpensive monitors frequently blow capacitors, and during a certain period in the 2000's there was a capacitor blight due to a stolen formula for water-based dielectric compound that was flawed. Millions of electronic devices manufactured during that time proved defective due to bad capacitors. If you've never repaired a monitor it would probably take you a total of ten hours to do a capacitor replacement. You can usually tell by visual inspection if a electrolytic (can) capacitor is bad. The tops are made to bulge. I usually just replace all the large ones. The tiny ones are usually unaffected. There are other problems that cause the yellow light, but if you're ambitious, just take a look inside. There are three things inside a flat-panel monitor--the display, the display controller, and the power supply. The AC cord plugs into the power supply and into your wall outlet.
Posted on Jan 28, 2013
The flashing light indicates a diagnostic state called protection.
When the Monitor goes on protection there are only two possible causes.
1 The 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 a broken contact, identified an internal fault and kicked in , starting the flashing light.
If you are in situation one, then the monitor 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.
Common faults that can occurr suddenly are a blown capacitor on power board, the inverter board powering up backlight lamp has blown, or a fault on main lcd controller board.
check also the video cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.
Check connectors, try moving the video cable, and if the cable is not built in, then also try a replacement cable.
Posted on Mar 06, 2009
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Posted on Jan 02, 2017
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