Question about Scanport H21 21" LCD Display Monitor

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Need power supply board for H21 LCD monitor

Can you tell me where I can find a company that sells the power supply circuit board for a H21 LCD Monitor. Model VT21F79.
The board has several numbers on it.
Ver 0.06
VH31400 12.17 2004

I am hoping this is the problem. There is no power to the board, no light comes on for the power. I am using a known working outlet, power cord and video cable.

Thank you so much for your time.

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H-21 scan port Dark Screen, If you unplug the green light flashes 2 or 3 times ending any activity until completely unpluged and plugged in again. My other scan port works fine using 1st monitor cables. I've used both ports on the graphics card. It's definately the monitor power supply or other componant.

Any ideas?


Posted on Nov 25, 2008

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How cane get power supply

Most LCD monitor manufacturer do not make their own Power supply/Inverter board, you need to get the name and number of the board and search on line. You can also have more than one version of the power supply for the same model.
These people sell boards:

What is wrong with the board any way?

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Hello David,

This is a classic symptom of a blown power supply board. If you open the monitor and look at the power supply board you will find parts called capacitors with bulging tops, they blow out because of trapped heat in the case. We have pictures on our web site at: that will show you what to look for and what you need to get for the repair job. If you don't want to do the repair yourself we do offer a repair service for $35 plus return shipping. Youcan contact us at if you need any more information about the repair.

I hope this helps, if so please rate our solution.

Corporate Computer

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