Question about Samsung Syncmaster 192N 19" LCD Monitor

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Samsung 192N suspect power supply problem

Monitor switches off after 5 to 10 minutes, no lights, will not come back on.
No response to front (soft) power switch, and no response to rear (mechanical) switch either. Removing the power cord from the receptacle resets the monitor so that it comes back on, runs for another 5 minutes and dies again.

Could this be some sort of an internal heat sensor or thermal fuse that is
reset when the power is removed at the receptacle. (the rear mechanical switch does not reset the monitor, only removing the plug).

Also this is part of a multi-monitor setup and the other monitors of the same type continue to work just fine, Swapping video cables at the PC has no effect, so it is definitely a monitor problem, not the PC nor the driver.

Thanks MJS

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  • Martin J Stadler
    Martin J Stadler Apr 18, 2008

    THNX

  • Martin J Stadler
    Martin J Stadler Apr 18, 2008

    Thanks Jemmyrash, I think so too, I can't find a free schematic for the exact model, so I guess I'll have open it up and start probing around.

  • drewboy93 Jun 18, 2008

    After the monitor has been on for about 15 - 20 min my monitor screen goes black for about 4 seconds at a time not very often to start with but the longer the monitor is on the worse it gets untill it flashes off more than its on. should i buy a new one caus they way this is going ill be sticking my foot through it. most annoying

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I'm sure it is power board failure that need repiar or replaced the defectieve parts of your LCD .

Posted on Apr 18, 2008

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Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). See example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
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http://www.badcaps.net
http://en.wikipedia.org/wiki/Capacitor_plague

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