Question about Sceptre S1902D 19" LCD Monitor
If the monitor has no power at all then you have a dead power board, or
a broken power cord, test also a different wall AC outlet.
If instead there is a flashing led on front of the monitor, that indicates a fault condition.
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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