ViewSonic VG150 15" LCD Monitor Logo

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Posted on Aug 21, 2007

Switching it on/off

The monitor seemed never to switch on so I replaced the switch with a Radio Shack momentary pushbutton switch. All well? No - not quite. I'm utterly baffled! To switch the monitor on, the switch does not work at all. the switch is fine, the soldering is fine, the wires are fine. I checked them all with my meter. I switch the monitor on by crossing the soldered joints on the mainboard with a screwdriver. I can then switch the monitor off using the switch I put in. Resistance on the wires and switch are negligible. Holding the switch down for a long time, pumping it etc have no effect on switching the monitor on. One tap is all I need on the switch to turn it off. I can get the monitor on every time by using the screwdriver method. Any explanations to this bizarre behaviour? I'm all set to toss the thing in the trash if this continues.

  • 1 more comment 
  • hump234 Aug 21, 2007

    To be quite honest, I really don't think the monitor is worth further effort. I can buy a brand new Samsung 17" LCD monitor for $183 at Sams.

    It's kinda sorta working now. I have to keep pressing the button repeatedly until the monitor springs to life. When it's on, it's OK but I'd say there's a dead circuit board in there somewhere.

    If anybody wants the complete monitor within the next few days then please feel free to ask me. I'll need postage but otherwise, it's free.

  • hump234 Aug 21, 2007

    My wife and i decided just to pitch it.

  • hump234 Aug 22, 2007

    I think shipping from Columbia SC would be a bit much. Looking at your photos I'd say you're in Kalifornistan?


1 Answer



I recently (last week) replaced an LCD screen on this model monitor and I have the remnants of the parts monitor still. If you think the problem is the circuit board with the switches, I could send you that part *NO CHARGE* (if you're in USA). I can't post contact information, though, or I'll get in trouble. Don't know how to continue at this point. Do you want to try posting contact information?

  • Anonymous Aug 21, 2007

    Are you in USA? I'd be happy to get it (I can put my extra parts into it and then put it to good use). Still not sure how to get you the information while adhering to their "Terms of Use". Grrrrrr. Ideas?

  • Anonymous Aug 22, 2007

    I hate to see usable hardware go into the trash. If you still have it and want to get it to me, visit my web page and drop me a note ( ). I'd be happy to pay shipping for it.


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