Having problems with your Acer AL1914 19" LCD Monitor ?

ACER AL1914 LCD Monitor goes black but green light stays on

\015 The monitor goes black after only a few seconds of being on, but green power light stays on. When turned off and then back on screen once again displays image for a few seconds and then goes black. Power light once again stays green, however.\015

Answers :

The monitor is doing a self test a finding an error.
\015\012The lcd has three parts, the screen plate(windows)/the logic(vga)/the\015\012inverter(power plug). Parts that go are the backlight ccfl's, behind\015\012the plate, and parts of the inverter, ie capacitors, all three take a\015\012bit of power from the inverter. The self test check that all the lights\015\012are ok and the inverter is ok, else it switchs off, ie if 3/4 light\015\012work it will switch off(my own case), hence the on chech error then\015\012off, However sometime there are stages of on/off ie on/ but no screen\015\012display, if that is the case the following may be of help...if you put\015\012bright light at an angle close to lcd can you see a windows shadow,\015\012text icons etc, ie still logic power passing,then .... (from a.n.\015\012other) after two weeks searching I finally find doctor living stone\015\012http://www.aplusperfect.com/articles/lcd_capacitor_repair more fun with\015\012paulbtorrent
\015\012the takening the case bit off is like opening your wallet a second time\015\012after buying a new LCD, but you must! smallest two screw driver's flat\015\012headed, practice using two pennies stuck together()with your fingers\015\012after, one little () move and inch and {} again, with the case , it\015\012does not break, just need to lever open
\015\012[once open you realize they somehow put that old briefcase clip\015\012inside!] also note the bright light test to do first to see if can see\015\012a windows screen , and that capacitors are one for a number of things\015\012that a make a inverter work! there a transistors as well, given that\015\012however, to replace all the capacitors on my inverter, was 11\015\012capacitors, cost me $11 (uk ebay) and already had the iron and solder.\015\012So only cost me me $11 to try and see but no luck , still fun and I\015\012still can see the screen for 2 sec' at a time plus I have a spare set\015\012of caps now in the event that the new one do go burst! you have to\015\012laugh really, what next , a new on/off button, as you work though the\015\012whole inverter mmmMMMMmmmMMMMmmmMMMMTim\015\012Berners-leeMMMMMmmmmMMMMMmmmmcome back all is not\015\012wellMMMMMMMMMMnnnnnnweek later land sight\015\012mmmmmMMMMMMMMMmmmmgggggggg(from
\015\012another a.n other)Generally, if the screen went out quickly, it was the\015\012inverter. If it went out over a slow period of time (flickering etc..)\015\012I would bet it is the lamp.replaceing the lamp should be pretty\015\012challenging. as that requires complete breakdown of your LCD,\015\012extraction of your dead lamp, and soldering in your new lamp... but I\015\012would like to say that I it did this after realizing it's 2 x kitchen\015\012strips inside [========] with wires that can connect back to the\015\012inverter with out any desoldering(ie kit assembly/dis) with the outter\015\012case remove (glass plate safe away) I could reconnect and see that 3/4\015\012were working (i!i hardcard ) cause the inverter to switch off after a\015\012secound ! order bult and replace and going
\015\012to cheap and see if I can get away with fitting a 15" in my 19' as it a\015\0121/3 of the price ! the market as drop out there, hope the inverter does\015\012not miss the length, or the screen out\015\012put.http://www.lcdparts.net/howto/troubleshooting/LaptopCCFL1.aspx OR\015\012MONITOR
Open it up and look for bad caps first then take some voltage measurement. You should have 5 and 12vdc. Worst case will be bad lamps. See example of failed monitors here: http://s807.photobucket.com/home/budm/allalbums
Repair Help & Product Troubleshooting for Acer AL1914 19" LCD Monitor

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