Question about ViewSonic VX924 19" LCD Monitor

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Won't turn on

Hello! I was given this monitor as the original owner was going to trash it, but I thought I'd take a look at it to see if it's repairable. It won't turn on. The LED on the power button will blink faintly when it's plugged in and NOT connected to a PC (no vga cord attached). ONce it is connected to the PC with the VGA cord the light stops blinking and nothing else happens. Power supply? what to check first? Thanks in advance!

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  • petri Oct 05, 2007

    Yeah...looking at the circuit board (Power supply and invertor), there's at least 3 bulged capacitors...they are located very close to the promary transformer...the board itself is brownish, looks like excessive heat..

    If I replace these bulged capacitors, it should help, but what else should I check?

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My monitor died and wouldn't turn on. Found 3-4 of the electrolytic capacitors had bulging tops and a dead short across them. Removed the caps but the short remained. Found the mbr10100 to220 packaged dual diode rectifier had a short across one side. Replaced the capacitors with Pansonic 10,000 hour
units and the 10 amp mbr10100 with a mbr20150 20 amp rectifier which brought the monitor back to normal operation.

Jack

Posted on Nov 22, 2007

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Could be a power supply issue. Maybe it's not getting enough voltage from the power supply unit. Could also be some bad solder points on the circuit board, or maybe a burnt capaciter.

Posted on Oct 04, 2007

  • Peter Downey
    Peter Downey Oct 06, 2007

    Check for bad solder joints. I've had bad solder connections on monitors before that were shorting out the board.

    The capacitor problem is more than likely your problem. Replacing them will probably solve it.

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