Question about ViewSonic VX1940w LCD Monitor
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Posted on Jan 02, 2017
Picture tube is not major problem. It is the main board, having damaged capacitors, could be more then 1. Other components to look at is, high voltage tranisitor, which gives up in most cases. Most cases in my career, i found that monitor tubes are good, unless the are dropped. So resolder the main board and check out for the components i mentioned. Careful while repairing, it has high voltage, take all precaution while openining the panel. Unsrew all the screwsat the back, also the stand, take a flat screw driver and lever the panel from one end till you open all the 4 sides. Thanks, and don't giveup.
Posted on May 19, 2010
There should be one fuse in the power supply inside. You can check and replace that if its dead. now if its not dead and you got power to that point you do need to rule out any capcitors at that time but if the fuse is gone it will not hurt to check the rest of the supply for the fault.
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Posted on Aug 18, 2009
I would make sure that all the cables are securely connected to both the monitor and the pc computer (screwing the screws from the cable to the port will help hold the cable in). Beyond that, the issue is likely with the monitor and not something that can be fixed by the end user.
If the device is still in warranty (and checking the cables don't work). I would recommend sending it back to ViewSonic to have it fixed.
Posted on May 16, 2010
You need to check the fuses on the backlight inverter board, also the logic board may be damaged by the AC voltage. Basic LCD monitor troubleshooting guide: Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
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 (they should be replaced in a set), 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/albums/yy352/budm/
Post back what you see inside so we can guide you further and it will help out other people in the future also.
Basic LCD monitor troubleshooting guide:
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Posted on Dec 02, 2010
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