Question about Acer AL712 17" LCD Monitor

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Monitor will not power up

With out any previous problems, my AL712 will no longer power up. I've checked all the usual with changing cables for ones that are definitely OK and I've taken it apart and checked the power supply fuse. With the case off, toggling the mains on off rocker switch does give a small result. There is the small click on the in built speakers as they receive power and a little bit of gass/static type noise from the monitor. And if plugged in as a second monitor on a laptop it is still seen. Any suggestions?

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Re: Monitor will not power up

Hi tafkab, Sounds like it's probably the backlight inverter board. Try the test I have at the bottom to see. It's a very common problem. LCD's use four small Cold Compact Fluorescent bulbs to back light the display. (thats what gives the LCD it's brightness allowing you to see it) The inverter board runs these lights and when they go bad they will typically show symptoms like you have or the monitor power light comes on and you have either no display or a very dim display. If you ever have one that has no display but the power light is on you can check by shining a flashlight directly into the LCD from the front (right into the screen) if you can see an image then it's either the inverter board (most likely) or the CCFL bulbs have gone bad. The inverter board and CCFL's are replaceable. Good Luck, Dude

Posted on Nov 26, 2006

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