Question about ViewSonic VA1912WB 19" WideScreen Monitor
Unable to hear sound from built in monitor speakers on Viewsonic model VX1945WM. All sound card drivers are installed with no conflicts. If I install external speakers the sound works. The internal monitor speakers did work at one point but just quit one day. Suggestions? The sound on my Viewsonic VA1912w quit working when I pressed the button on the On Screen Display "Restore Memory".I pressed the button in an effort to eliminate the flickering on the screen and that did not change. I subsequently downloaded and installed a Vista driver and the flicker was solved. As for the sound, when I press the buttons to go from ANALOG to DIGITAL, I get sound for a couple of seconds. When I press the power button I will get sound for a couple of seconds before the monitor goes off. I have twice spent more than an hour with Viewsonic Tech Support and they have no solution.
it will probably be the graphics driver you need to update as XP probably loaded generic a graphic driver. The monitor should be ok with a standard driver.
Posted on Apr 18, 2007
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.....
Posted on Oct 05, 2008
Common failures in this monitor is the 470uF caps in the inverter section (close to the inverter transformers), but you should replace all the caps in the 5vdc and the 12vdc as a whole set. See example of failed VIEWSONIC monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums
Posted on Mar 28, 2010
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