Question about HP w19 19" LCD Monitor

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Troubleshooting main board.

Hello,

I'm new to servicing LCDs. I have a HP w19. Walwart is fine (tested under load) 12 and 5 volts leaves the inverter/pw sup board. I've looked for a schemative for the main board (715G1423) and have found nothing. Any assisatance you can offer me in respect troubleshooting the main board would be greatly apreciated. Thank you!

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Three things to look for in service with LCD monitors,
1 bad capacitors
2 Bad transistors for the back light feeds
3 bad ic pulse chips for the Non function circuit
you will not find schematics unless you peruse the patent office records, reverse engineer the circuits and you will have a schematic
when the main chip fails on the vga board its time to buy a new vga video board,
sounds like your board may be suffering a bad IC telling the main chip the power is OK

let me know how it goes.

Posted on Apr 05, 2009

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Defective capacitors on the power board can cause this problem, you can read tips that I have written here. hopefully can help.

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Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

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Just go to this link:

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