Question about Microtek C893 18.1" Flat Panel LCD Monitor

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I have the same problem!

One morning a couple of weeks ago -- after working fine since early 2002 -- it just wouldn't come on. The power switch just alternately flickers yellow(amber) and green - and nothing happens. I suspect that it may be one of three things: (1) the contact in the switch is just worn out. (2) Perhaps there's a fuse inside that fizzled. Or (3) there's a power supply of sorts inside that fizzled.

I'm reluctant to tear this thing open -- as it may involve tiny parts I cannot handle - or have no substitute for.

Up until the moment it stopped - it worked just fine for 7 years with no hint of any such problem.

If any reader knows a reasonable 'fix' - assuming there is one -- please would appreciate your letting me know at: robertrx@hotmail.com

Thanks.

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Hi Robert,
The monitor is on protect mode because an internal fault had been detected.
To start unplug monitor from power and from computer and test computer with different monitor to find out if it is monitor or computer fault.

If it is computer fault and no video signal , then test:

  • Video cable.
  • Video adapter on PC (sometimes integrated on motherboard)
  • Motherboard.

If it is monitor fault , then the monitor is on protection.

When on protection you keep having a flashing led on front of the monitor , and monitor turning off by itself after a while, 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.

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 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 occur are a blown capacitor on power board, faulty inverter board, faulty input board, or a fault on LCD Digital Controller board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.

Try moving the video cable, and if the cable is not built in, then also try a replacement cable.

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.

Regards

Posted on Jul 17, 2009

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