I have a VX1962WM monitor. When I power up my PC I can see an image briefly then the screen goes black. When I power the monitor down and back up I again see an image briefly and then it is gone. I have...
That's right, the problem is related to inverter, but source of it - backlight lamps (if you see an image for fractions of seconds) or MOSFETs (if you see an image for few or more seconds). Image shows up, that means inverter starts, but then goes off because inverter controller turns into protection caused by something. Checking lamps is not that hard. Disconnect all cables coming from the screen and remove chassis with PCBs, so you will keep the display itself only. Next, at the edge where high-voltage wires are coming from, there you will see tiny philips screws, take them off. Then gently and very straight pull lamps assembly off the display, one and then another. If lamp is bad you shall observe contrast black ring or black dots near to the electrodes. Bad lamps must be replaced, you can buy them on ebay, for instance, just search CCFL 19". Or, if you don't care about total brightness, you can substitute faulty lamp with 27 pF 3kV capacitor, soldered across appropriate HV-connector on the inverter board - this will work also.
Sep 14, 2009 |
ViewSonic VX1962wm LCD Monitor