Question about ViewSonic VP230mb 23.1" LCD Monitor

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Power supply problems (failures).

We have about 200 of these beasts at the Hospital. After a year or so of continuous use, the power supplies are crapping out.

I need a schematic and possibly a parts list if possible. These things have recently become a main't responsibility for me.



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  • TomTurkey Apr 09, 2008


    The whole monitor is dead. They have been provided new p/s units by the Mfg. without charge, but that is now all changed. I guess that was about to get expensive. That's when they put them off on me.

    A schematic is all I need. Been doing this sort of stuff for about 25 years, but the work load doesn't support my reverse engineering and autocad drawings.

    Thanks, Tom


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You are talking about the Veiwsonic VP230mp right!
The supply is 12 volts at 7.5 amps.
Got some here we wit bad smps.
One had a bad PFC chip and the other has an intermitting start up.
Solution is trash the inside ps and hook up an externat one. Any 12 volt-10 or 15 amp ham supply will do.
Inside you have to trace out the main dc connection and solder to these and supply it wit outside supply.
Easy fix.

If anyone knows the failure cause on the internal SMPS chime in.

Posted on Apr 14, 2008

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Hi Guys,

We have detected one faulty chip (DIL8 box ref:13843 from ??)... The problem is that we didn't find any supplier for it.
There is another faulty chip that we found (DIL8 box ref:LM358D from Philips)... This one is easy to get on the market.
Do you have any supplier to propose for this component? Do you have spre component already?
Thanks by advance.


Posted on Sep 10, 2009

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Pleasse send any solution abaut this problem



Posted on Oct 09, 2008

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Do these units not turn on at all or is the back light not functioning? I'll contact you off line for more about this.

Posted on Apr 09, 2008

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