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My monitor has a power issue, its over 3 yrs old, and past warranty, but i know it only needs a replacement part i just dont what, the model is vx912 The problem, when i turn it on connected to display adapter or not, it powers up displays the customary dvi input, powers off, re- powers on etc, infinite loop, some sort of power management or regualtor has gone in it, ant suggestions

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You need to get/buy/download the service manual and
schematics, so you can then trace and analyze the circuit.

A strong knowledge of electronics is required to do this.

Analysis is complicated by the fact that all key functions
within the monitor are controlled by software running on
undocumented digital control chips. The chips are called
ASICs, or application specific integrated circuits, custom
designed for the manufacturer, and programmed with secret
software.

Beyond obvious voltage and continuity checks outside
of these chips, there is little to analyze or repair in a modern
electronic appliance.

There is no magic solution nor red and green "what chu mah
callit to replace"

I have thirty years in electronics and a degree in computer
electronics, yet I stopped fixing monitors years ago.
There is no percentage in it.

I just bought 4 x 21" hi-resolution wide screen monitors,
with 5 Millisecond pixel time constants and 1000:1 contrast
ration for $180 each,

and sold of my 3 year old monitors for 15 bucks each at
a garage sale.

Martin

Posted on Apr 24, 2008

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