Screen dark I can barely read the words on the screen. I wondered if there was a setting to turn up the brightness of this unit. I have not been able to find a manual for the Audiovox Sirius PNP3

Try going into power option settings and taking the brightness to the max there. Start, control panel, power options, then you should see a setting for battery and for plugin. Hope this helps.

It seems plausible that by your description the 3 year old turned the darkness on the screen all the way down. So I would try changing your brightness settings to see if that helped. It may also help to restart the computer. If your brightness is all the way up, and restarting the computer doesn't allow you to see anything (even in Post) then something more definitely happened.

Sounds like your backlight is bad and you need to have the screen replaced

You tried setting the Brightness to maximum, but the screen remained dark? Could be a problem with the LEDs that light up the screen. Also try turning it off and back on.

It looks like the LCD backlight malfunction. Check the backlight voltage, if you have the voltage there, you need to replace the LCD unit, otherwise the main board is defective.

Good Day, Cary;
PICTURE IS DARK WHEN OSD CONTRAST MENU ADJUST LEVEL CHANGES.
Cause: SHORTED ZD-309.

Also, increase Screen controls at front of TV and see what pix brightness does . Hopefully you did check brighteness & contast levels. When adjusting Sreen controls set contrast control at about 90% and brightness at about 50%.
Good Luck, big IRISH.

Probably need your brightness turned up. Go to menu, then settings, then display settings, then backlight, then brightness.

it may be due to the inverter unit inside the lcd panel defective . replace the defective unit.

if the picture is REALLY dark, like you can just barely see it in a lit room, then the backlight might not be lit. LCD TVshave backlight that shines through the LCD screen which allows you to see the picture.

If it's not the backlight then it would be the brightness/contrast settings that need to be adjusted. If the picture used to be normal and all of a sudden went dark, verify the backlight. Normally you can look through the slots on the top of the set and determine if the backlight is on. If you can see a bright light through any of the slots, the backlight is probably OK... go after the brightness/contrast settings.

Find out if you are still in warranty this is not fixable.