Question about ViewSonic 27 VX2739wm LCD TV
I haven't powered up this monitor for a few months, i kicked it on today and it started out with a magenta hue to the whole screen, I turned it off and back on same thing. I did a factor memory reset and now has a dim green hue to the whole screen. replaced the power chord, tried both the vga, digital, and hdmi inputs, all the exact same result, only with different resolutions. Tried doing a reset from the menu,
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Posted on Jan 02, 2017
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
If there is a flashing led on front of the monitor, that indicates a fault condition.
The flashing light indicates a diagnostic state called protection.
When the Monitor goes on protection there are only two possible causes.
1 The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.
2 The protection circuit detected a wrong voltage or a broken contact, identified an internal fault and kicked in , starting the flashing light.
If you are in situation one, then the monitor will reset just unplugging power cord for one or two hours, sometimes even minutes.
If you are in situation 2 , then there is an internal fault.
Common faults that can occurr suddenly are a blown capacitor on power board, the inverter board powering up backlight lamp has blown, or a fault on main lcd controller board.
check also the video cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.
Check connectors, try moving the video cable, and if the cable is not built in, then also try a replacement cable.
If under warranty contact Viewsonic to find out a Viewsonic service point.
See:ViewSonic - Support & Service
If you want to repair at your own expenses, just locate any good qualified repairer.
Posted on Mar 06, 2009
The monitor should come when the power button is pressed once - period. If not, and it continues to happen when connected to another PC, then the hardware is having trouble powering up the panel / ccds and it should be replaced/serviced according to the terms of the warranty. I suggest to bring it to an authorized service center for proper diagnosis & fix the problem. regards
Posted on May 23, 2009
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