When I turn on my computer, everything comes on, the light showing the monitor is on, but the screen remains black. I tried shining a light on the screen, and you could just barely make out that it was running, just not bright enough to see the display. Is there a fix for this, or is it shot? It is only 4 years old.
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check your graphics card wait 20 minutes or more see what comes up i recently had that or if u try everything eg replacing everything and it still don t work try rebooting the computer with the recovery disc which means it will wipe out everything programs everything.
When you first switch on Does it show Benq?If not the inverter circuit has failed.If you are technically able you can try resoldering transistors on inverter board.If your display is black all of the time transistors could have failed as also related fuse etc.
And yes please check with BenQ Normally these have a 3 year warranty.
HI. I had the same problem with mine. It would flash the screen on for a split second and then turn black, the whole time the power light remained green. Upon opening up the case, I pulled the combo power supply board/inverter board out for inspection. I noticed one of the capacitors had a bulge on top indicating it was bad. It was the the 680uf 25v capacitor. I desoldered it, and soldered in the new one. After hooking everything back up, bingo!! Monitor now works perfectly. I couldn't find an exact match to the capacitance locally, but I had a 1000uf 35v cap in my utility box. It worked fine as a replacement. You can usually go within 30 percent of tolerance and be alright. Just don't go under on capacitance or voltage. I hope this helps.