The Ultimate Laptop Repairing Course: How to Repair Laptop by K A Rahaman

Author:K A Rahaman
Language: eng
Format: epub
Publisher: K A Rahaman
Published: 2014-06-07T22:00:00+00:00

Power Inverter Issues

The Power inverter is the only part left for screen repairing. You can only do so much to repair the inverter if failure occurs. The only thing I have found that works about %60 of the time is to change the transformer block on the Inverter. It is the part with the copper wire wrapped all around it… a long rectangular shaped component with legs on both ends (usually 2 to 3 on one side and 2 to 6 on the other – the legs attaching to contact pads on the inverter board. You will need to use a soldering gun and flux paste.

The job of a Laptop power inverter is to convert DC power current back over to AC power current, this is done because an LCD bulb needs more power than dc voltage can provide.

When a power inverter fails, you will lose your light to the screen, the bulb will still be good, and the screen is still good, the display will even be running without light.

The easiest way to test a faulty inverter is to replace with a known good one. Another way to test the inverter is to attach another display panel to your laptop .. if that other screen as well has no light, you’ve just ruled out the LCD bulb as being the problem …you know this because you know for a fact that the secondary screen that you’ve attached is a “known working” screen … and that it has a “good” bulb.

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