The power can be bad caps in the power supply or bad inverter circuits, start taking the back off first and look inside for bad caps first and report back, see example of failed monitors here: http://s807.photobucket.com/home/budm/allalbums
SOURCE: monitor goes black 1 second after coming to full screen
I have 2 systems with the FPD1500 monitor. They worked fine until I applied
SP2. After SP2, they will not start. They come on OK, display the Windows
XP splash screen and then go into sleep mode when the system starts the
proper display mode before the Windows XP login screen is displayed. If I go
into safe mode and uninstall the video adaptor and restart the system, it
will start properly. After it comes up, it finds the video adaptor and
installs it and the session proceeds OK. I can reset the resolution and
number of colors to 1024x768 and Highest (32 colors) and things look fine.
However, when I restart the system, it hangs up after the Windows splash
screen and the monitor goes to sleep.
If I put it into VGA mode, it will come up OK. But once I change any
resolution or number of colors, it imediately goes to sleep.
I would appreciate any help you could offer.
SOURCE: fp5315
Hi I have similar, I'm an electronics engineer and took mine apart only to find the power supply is very sick to the pint the pcb that converts all the signals probably has been damaged too, ie BIN FODDER.
Not very constructive but at least I know what is wrong - if I can get any constructive info i willl post it....
SOURCE: ACER AL1914 LCD Monitor goes black but green light stays on
The monitor is doing a self test a finding an error.
The lcd has three parts, the screen plate(windows)/the logic(vga)/the
inverter(power plug). Parts that go are the backlight ccfl's, behind
the plate, and parts of the inverter, ie capacitors, all three take a
bit of power from the inverter. The self test check that all the lights
are ok and the inverter is ok, else it switchs off, ie if 3/4 light
work it will switch off(my own case), hence the on chech error then
off, However sometime there are stages of on/off ie on/ but no screen
display, if that is the case the following may be of help...if you put
bright light at an angle close to lcd can you see a windows shadow,
text icons etc, ie still logic power passing,then .... (from a.n.
other) after two weeks searching I finally find doctor living stone
http://www.aplusperfect.com/articles/lcd_capacitor_repair more fun with
paulbtorrent
the takening the case bit off is like opening your wallet a second time
after buying a new LCD, but you must! smallest two screw driver's flat
headed, practice using two pennies stuck together()with your fingers
after, one little () move and inch and {} again, with the case , it
does not break, just need to lever open
[once open you realize they somehow put that old briefcase clip
inside!] also note the bright light test to do first to see if can see
a windows screen , and that capacitors are one for a number of things
that a make a inverter work! there a transistors as well, given that
however, to replace all the capacitors on my inverter, was 11
capacitors, cost me $11 (uk ebay) and already had the iron and solder.
So only cost me me $11 to try and see but no luck , still fun and I
still can see the screen for 2 sec' at a time plus I have a spare set
of caps now in the event that the new one do go burst! you have to
laugh really, what next , a new on/off button, as you work though the
whole inverter mmmMMMMmmmMMMMmmmMMMMTim
Berners-leeMMMMMmmmmMMMMMmmmmcome back all is not
wellMMMMMMMMMMnnnnnnweek later land sight
mmmmmMMMMMMMMMmmmmgggggggg(from
another a.n other)Generally, if the screen went out quickly, it was the
inverter. If it went out over a slow period of time (flickering etc..)
I would bet it is the lamp.replaceing the lamp should be pretty
challenging. as that requires complete breakdown of your LCD,
extraction of your dead lamp, and soldering in your new lamp... but I
would like to say that I it did this after realizing it's 2 x kitchen
strips inside [========] with wires that can connect back to the
inverter with out any desoldering(ie kit assembly/dis) with the outter
case remove (glass plate safe away) I could reconnect and see that 3/4
were working (i!i hardcard ) cause the inverter to switch off after a
secound ! order bult and replace and going
to cheap and see if I can get away with fitting a 15" in my 19' as it a
1/3 of the price ! the market as drop out there, hope the inverter does
not miss the length, or the screen out
put.http://www.lcdparts.net/howto/troubleshooting/LaptopCCFL1.aspx OR
MONITOR
SOURCE: when i turn the monitor power button on monitor
Hello,
The picture board on your monitor is bad, since it goes
black after three seconds, it means the
picture
board of your monitor has developed fault.
The best thing for you
to
do now is to take the monitor to a local repairer within your vicinity or any service center
to help with the replacement of the picture board
because the fault is not something you can fix yourself, in order not to
complicate issues.
Take care.
SOURCE: HANSOL MODEL H750 MONITOR. WHEN I TURN POWER ON,
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net
448 views
Usually answered in minutes!
×