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Posts: 1
Registered: ‎11-12-2012
Message 1 of 2 (3,137 Views)

Replace Sony Vaio E series LCD with Backlight Problem

We have a Sony Vaio E series laptop (model number PCG71316L / VPCEB35FX). Its LCD has recently developed white spots from water stains. We have purchased a new screen and put it on. Then we found out that is LED backlight lamp does not go on, or we need to shine a light on the LCD screen to see the image on the screen. So far, the replacement screen looks perfect as the old, with same type and connection socket, including position (on the lower left hand side), size, and number of pins. In addition, this type of screen does not come with a inverter socket which is needed for all CCFL backlight LCD screen. More intriguing, when we put back the old one onto the laptop, it manifest the same problem.

Does anybody know if there is a switch somewhere that trigger the backlight lamp power supply, or a way to trigger the bio to recognize the new (or old after dis-assembly) screen?

Thank you
Posts: 3,846
Registered: ‎11-12-2012
Message 2 of 2 (3,137 Views)

Re: Replace Sony Vaio E series LCD with Backlight Problem

Welcome to the User Discussion Forums.
The VPCEB3 Series Laptop has the Inverter voltage provided directly from the Mainboard. This is for both the LED LCD as well as the CCFL LCD.
please contact Support as service is recommended to replace the main board, however when you call a tech can go over a few settings with you first.

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