Question about ViewSonic Computers & Internet
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FIRST WE DO NORMAL AND LATER TRUE CAUSE.
gee that is normal on all monitors and by Energy Star laws too.
the monitor if the PC is dead or in speed mode, shuts of in 15 to 90 seconds, all do, every one. the monitor has self sleep, all do. everyone ever made did. even back to CRT days.
and the OSD button goes dead after. that. too. fooling the untrained.
here is the first tests, NO PC connected at all
power on see power light glow correct color
then see Viewsonic splash screen push the menu button now. quickly, if button dead hold it for 10 to 15 second to reverse the button lock now, see OSD works.
if you test the monitor on a good PC not in sleep mode the but working PC, your monitor is ok.
this monitor is very very old, 2004?
it has CCFL back lamps not LED<
and all fully used CCFL lamps are now no good, used 8yrs a day at 5years are no good. that is why we use LED back lamps now.
this is what they do: all do , used fully.
1: goEs dead forever, (vast did)
2: INTERMITTANT . (BINGO YOU ) OR INVERTER DEAD.
3: DIM BULBS (like me. lol)
4 TURN YELLOW FOR WHITE screens.
5: STROBEs. (FLASHes)
AND A VERY EXPENSIVE SURE, THAT. AND LABOR.
Posted on Apr 04, 2020
SOURCE: Monitor displays breifly then goes to blank screen
Well my Acer AL1711 finally gave up in as much as the screen flashed briefly at switch-on then went blank, regardless of brilliance setting so I decided to take it apart and try to fix it. The good news is that IT WAS NOT THE LAMPS that I feared in my earlier post and was easier than I had ever dreamed! First allow a good period of time for the internal components to discharge before starting. Remove the plastic clip at the base hinge to expose 4 screws - remove all four to release the stand. Then remove the 4 black cross head screws that appear to hold the back on, they do but there is more to do. Carefully tease the silver surround away from the case, best to start in the centre of each side and finish at the corners. There are many plastic clips to release before the surround comes away. Now remove the four cross head screws holding the pushbutton switch circuit board. The whole assembly can now be removed from the case and reveal a metal cover held by 2 SHORT (remember that!) SHORT! threaded machine screws. These once removed will allow the case to be slid away from the holding tabs located down the edges of the cover and removed. Now unplug the connectors from the board that has the mains input connector attached to it. You will see a heatsink with 4 electrolytic caps above it. Silly ACER designers, have placed the capacitors so that they get all the heat from the heatsink! Yes folks, the capacitors are above the heatsink when the monitor is in its normal operating position! So all the convected heat dries them out, nice. So the fault is due to a silly design error! Replace all 4 capacitors, two of them are 1000uF at 16V and the other two are 470uF at 16V, all radial types. Try and get capacitors with the highest operating temperature, at least 105 degree types and remember these are polarised, make sure you connect the capacitor + wire to + on the circuit board. You should have no problems with re-assembly but don't put the wrong screw where the short ones went or you are liable to see it come out of the screen LOL! Most important - - Don't forget the screw holding the earth tag to chassis. Good Luck, you will be amazed how much brighter the screen is now!
Posted on Mar 16, 2007
SOURCE: vx900 viewsonic monitor problem . Blank screen except for power off/on
no, Viewsonic has the part for sale 42.99 - free shipping. Easy to replace
Posted on Jul 13, 2007
SOURCE: Monitor displays breifly then goes to blank screen
The green power light indicates that the monitor is receiving from the
computer correctly. I suspect it is going into high voltage
shutdown. There is a safety circuit that monitors the high
voltage and shuts the monitor down if it sees anything amiss. So
the monitor comes on and then shuts off. High voltage problems
are generally not worth trying to repair. Another example of a
worthless safety feature. High voltage failures are not
dangerous, and adding the safety circuit just kills the unit when it
may have some life left or worse, sometimes it is the shutdown circuit
itself which fails!
Hope this helps.
Posted on Jan 10, 2008
SOURCE: NEC 19'' LCD monitor power on but screen blank
If you can try it on another unit , If it still does not work, Then the most likely culprit is a bad power supply. If you know any thing about soldering replace the capacitors they are probably bad but being that these things are being built so cheap.It could also have a bad inverter. not repairable by average dude.If you open it be careful and do not attempt unless you feel comfortable with a solder Iron.Hope this can help you Good Luck. www.IrionsTVshop.com board re builders.
Posted on Feb 29, 2008
SOURCE: screen goes bank after 2 seconds even if powder light is on
i just finished repairing a 20 inch acer monitor that had the same issue.... you have to take it apart and examine the power supply side of the monitor. there are capacitors that go bad on that board. you can tell be feeling the tops of them... the feel rounded. replace the capacitors and put it back together and it will work fine
Posted on Apr 16, 2009
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Hi John Skerencak, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
gee all do that new. with dead PC
your posts is not clear at all.
2008 mfg date. means bad CCFL on most.
all monitors even back to year 2000
all go to dead black screen power saver mode if the PC is dead
no video input it goes OFF LINE
all do that.
the OSD button works for 15 seconds at power ON then goes dead that menu button.
lacking good PC or video generators like I have on my bench.
by law ENERGY STAR.
is he power lamp dead, not told.
if dead Power LED, can be sold green or go yellow to signify sleep mode.
dead power lamp is sign of dead power.
100% dead,
PSU or power pack as the case may be.
lets see.
turn monitor on, (power LED must glow)
the screen shows a huge Viewsonic spash screen, (proving screen LCD is not dead)
then goes to sleep, with dead PC.
all do that every one.
turn off then turn on and under 15 seconds push MENU key on mon.
see OSD works. or is locked see unlock in manual.
dead 100% all the time full time dead means
CCFL dead 99% cause, super common
this is not a LED back lamp monitor
it is CCFL tube and most died in 5 years of life, 10hrs day used.
the flash light test proves that.
done right.
https://www.pcdied.com/monitors_and_scre...
correctly
1: point flash liGHT TO SCREEN.(FL ON)
2: TURN ON MON. SEE POWER LAMP GLOW.
3: SEE DATA NOW, YES, BAD CCFL HERE.
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