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HP TC4200 tablet pc. Screen keeps going dark, can JUST make out characters. Happens more frequently on AC power, lesson battery. Resolved by closing and reopening screen hinge. When connected to external monitor display is fine, switching tablet back to internal display mode [Fn F4] also reactivates screen to normal visibility

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  • oakleaf Nov 24, 2008

    Same thing here, I can only see the screen when the laptop is almost completely closed. It's not that the display is turned off, it's that the backlight is turned off. This seems to be a KNOWN problem for at least 2 years!

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Do what you can to rule out the tablet's firmware and power-management software being dotty (by refreshing those installations.)  Just in case, put an order for a replacement backlight in (from HP, who can at least let you on to the part number, or elsewhere...) and have a flatscreen handy to use as a spare display if the internal one gives out on you!

Oh!  And file questions like this in a non-general category so you can get answers sensible to HP tablet PCs!

Posted on Aug 02, 2008

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