High pitch noise...Screen goes black.

Dell Inspiron B130.

When you turn it on the screen lights up about 5 seconds into post it starts making a high pitch noise on the bottom left of the LCD srceen.

Then it suddenly goes black and the noise stops...It will run a monitor through the VGA connector.

I thought it might be the magnetic reed switch.

But with this high pitch noise it is making me think it is the inverter, but I really do not know.

Anybody ever heard something like this ???

Thanks for any replys, feedback or advice.

 

Your inverter or backlight is almost certainly at fault here. Sadly, I don't think there's a surefire way to tell. For the most part, if the screen is kind of reddish at boot, it's more likely the backlight; else, it's most likely the inverter.

Backlights are really a pain the butt to replace, but inverters are fairly easy. Both parts are nonetheless fairly cheap:

http://shop.ebay.com/i.html?_nkw=de...270.l1313&_odkw=dell+db130+inverter&_osacat=0

http://shop.ebay.com/i.html?_nkw=de...13&_sop=15&_odkw=dell+b130+inverter&_osacat=0

And Dell has fairly comprehensive instructions in dismantling the display assembly:

http://support.dell.com/support/edocs/systems/ins1300/en/sm/display.htm#wp1105347