Having problems with your ViewSonic VX922 19" Monitor Flat Panel ?

ViewSonic VX922 monitor - black screen - green power light flashes

\015 Could someone please tell me what's wrong with my ViewSonic VX922. I've had this monitor for about 1.5 to 2 years. It's been working perfect until couple of weeks ago. In the morning, the monitor seems to work fine. I can switch it on and off without problems. I can change the resolution and refresh rate. The only thing I can't do is change the input type from Digital to Analogue. If I try to do that using the OSD on the monitor, the screen goes black and the green power light begins to flash. The only way to bring it back to life is by unplugging it for about 10 seconds and then plugging it back. Other than the inability to change the signal from digital to analogue, the monitor seems to work fine if I don't touch it. I can even switch it on and off and it works fine. Now, after about 6 hours of use, this is when things start to go really annoying. If I switch off the monitor, change resolution and refresh rate, change the input type from Digital to Analogue, the monitor screen goes black and stays black (even the "no signal" doesn't appear on the screen). The green power light begins to flash at a rate of about once a second. I have to unplug it, wait and plug it back to make it work again. When I do get it to work in these situations (by unplugging and plugging it back), it works fine for hours on end, I can play games like Crysis, Call of Duty, Counter Strike Source with no problems all night long without problems... As long as I don't do any of those things I mentioned that result in the black screen and green flashing power light. I think the problem only occurs when the screen resolution and/or the refresh rate changes. And that too, after about six hours of use. Maybe it's a temperature problem but when its working it works fine for as long as I leave the display switched on. This problem is re-occuring. It happens every day. I've tested the monitor on another PC and it gives me the same problem. I've checked all the cables, connectors and pins, and they all seem to be fine. I have Vista, Geforce 7600GT and all drivers for all the hardware are updated.\015

Answers :

PLEASE read Carefully so here is a fix for the green blinking light ...the monitor is going into shutdown....protect mode......THIS is ...Only for the seasoned electronic service tech ......YOU NEED TO BE into Electronics ..or have electronic background and know how to solder to do this........I been doing repairs for 30 years now ..............After extencive troubleshooting and replaceing a lot of electrolitic caps on the inverter board and spending about 10 hours doing so ....i decided to eather go for broke and blow this up more or trash the unit......................Well my blinking light deal went away...my monitor you could see it trying to start and just shut down............first of all make sure you have no broken solder work on the inverter board or swelled up caps ...Thay use lead free solder so the solder work sucks also...........I did pull the main buss line from the inverter pc board that runs the transformers to test to see where the trouble is.....found its at the high voltage end of the inverter board and The viewsonic 922 uses a protection ic on the inverter board and it tells the controll ic whats the High voltage status of the inverters.....I soldered a 47uf @ 25 volt cap on pins 7&8 of ic-u2 [ bi3101a ] Pin 7 is posivtive pin 8 negative of the cap.... and then soldered pins 10 and 11 togeather on the other side of the ic.......ITs fooling that ic telling the main controll / protect line thats all is well........I would guess the whole deal is LOW inverter voltage or maybe a surface mount device thats going to go........could be low resistor tolerence also............The monitor been working for a week now.........Always on.....anyways........YOUR problem may just be bad solder or bad caps...........if you Have a electronic background or have a friend that works on electronics have him look at the caps.see if any or swelled or rounded on the top of the caps..Also chect the main plug that goes to the LCD backplane to make sure its in correctley................if all that checks then the problem is ON THE INVERTER BOARD ONLY ......befor doing what i have done......I also have a Viewsonic VA-800 that had some of the same problems also ,but it had a lot of lines on the video.......I replaced the,,,,, 2.2 mic @ 50 volt cap in the middle of the main board on it and its still running.....but has about 3/8 of white traces following all the words on the desktop...[[[ anyone that knows this fix i would like to hear from ]]] ..........NOTE if you dont know about electronics...dont attemp any of this......their is a lot of voltage on the inverter board........my answer is that these monitors are JUNK...poorley built units.....
I suggest everyone try an RMA. You don't need a receipt or anything. As long as you bought it within 3 years I think you're good to go for the RMA. Kind of a pain, but it's worth it.
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