Question about ViewSonic VX2255 Monitor
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Posted on Jan 02, 2017
Blinking on and off is not always a capacitor issue, it is usually caused by faulty transistors at the high output transformers that light the backlights. Crappy board design ! But fixable in most cases.
Posted on Aug 10, 2008
SOURCE: Monitor failure
I have just cracked open a Viewsonic VX724 monitor with the same problems mentioned above. This is a power supply issue. As I am a technician I can repair my power supply by replacing a few capacitors and a couple of surface mount transistors on the back of the power supply PCB. If you aren't a technician than I would suggest you weigh the cost and either source a new powersupply and install it or scrap your monitor.
Dillon, Trace Electronics, Barrie ONT, Canada
Posted on Apr 11, 2009
I went through a lot of threads trying to come up with the solution to this problem, monitor goes off after a couple of seconds of just hitting the blue power button, and the solution I came to is the power supply within the monitor has gone out! which is common for flat pannel monitors, but I am not saying my situation is the same as yours, if you see different colors when it goes off on you, their is other problems wrong, mine has always been the power supply and I just take the monitor to a laptop repair guy and he charges me 65 flat to repair the issue. instead of going to viewsonic which they want you to send them and pay out of pocket first before they fix your issue. I will say 65 dollars flat and 3 days of not having a monitor is better then going to the ups store and paying 65 to box it and 70 to ship it. I guess look around for an electronics expert in your area and have them take a look at it.
Posted on Nov 15, 2009
These have age related problems on the inverter board which lights the 4 bulbs
I repair these regularly through ebay.
Most common cause is a blown fuse on the inverter board, sometimes that is caused by bad capacitors or transistors. Usually it's just from age and heat.
Fuses are marked F1 and F2 and located on each side of the white large plug that feeds the board. These can be checked with continuity meter.
Posted on Nov 18, 2009
Testimonial: "Thank's again Fran, I was looking in the wrong place, power in brown Delta board had a F1 fuse. 4th board on opposite side had F1 & F2 Like you said"
Bad caps in the power supply, common problems. See examples here: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20V912B/
Posted on Jan 07, 2010
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'No signal' and 'unsupported signal' messages mean 1 of 2 things, either the VGA output is off(laptop) or the display resolution is set too high(laptop and desktop). Assuming the VGA cable you are using is good, try this:
Desktop: hook the computer back up too your computer monitor & set the computer to the basic VGA resolution. For windows XP, right click a blank area on the desktop, click 'properties' on the dropdown menu, click settings. Write down the numbers in the 'screen resolution' and 'color quality' boxes!
Drag the 'screen resolution' all the way down to then 'less' side. Then change the 'color quality' to the lowest setting. Click apply, then answer yes (the display will look UGLY - don't worry!!) Now connect your computer back to your projector. If it works, then the resolution you use on your desktop monitor is not supported on your projector. Experiment with different resolutions to see which one looks best on your projector. You will need to change the settings each time you switch monitor to projector.
Laptop: by default the VGA connector on your laptop is off. To turn it on, look for a blue symbol on one of your function (F1, F2, F3...) keys. It looks like an old TV with a line on both sides 'O' (F4 on HP) Press & hold the blue button (on the lower left of the keyboard, usually to the left of control ) and tap the bleu button you just found. Let go & give you're a computer a few seconds to change over. If the laptop screen goes blank, you found the correct button! The display image should now be visible. Repeat this 1 to 2 times to change it back to laptop display.
If you did not see the display on the projector, 2 other issues are possible. First, verify that the VGA output on the laptop is working - connect the laptop to a regular computer monitor & change the display resolution to the lowest settings (see desktop above), then try it again on the projector. If you cannot get an image on a computer monitor, your laptop settings may need to be adjusted in the same dialogue box as the settings. Monitor #1 is the laptop display, Monitor #2 is the external output.
Happy viewing :)
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