Hello, I have a Dell 20" monitor and just last night it began to blink a few times then goies out. I unpluged it and repluged it and seems it's going to go on but then starts to blink again and again. After a few more blinks - it shuts off! A friend of mine said it was probably the power supply? I have no idea why it does this. Please help me. Thank you very much.
Hey George - Usually LCD failures (especially blinking like what you are seeing) are due to a capacitor or set of capacitors on the monitor's power board that have worn out. It's usually an easy fix by identifying and replacing the bad caps, but most people aren't comfortable with this type of repair themselves (nor do most people have a soldering iron). Sometimes people just replace the entire power board. You also may have had a power surge take out other components - obviously without examining your monitor there's no guarantee it's just a cap or two.
But if you don't own a soldering iron or if you aren't comfortable taking apart your monitor yourself, then decide if the monitor is worth fixing at a shop (or use your warranty if still applicable). If it isn't worth it, just recycle it and get a new one.
My brother knows a bit about electronics and soldering. He replaced 2 capasitors on the logic board. This took care of the scrolling flicker it had, but now it turns off. You mentioned the 'power board'? I'll let him know of this. He said the monitor would make a strange light winding sound then go out. The only way it goes back on is to unplug it and replug it. But sadly it won't stay on
Thank You again.
My Dell 20" monitor still has that bug. I think its like a 2007 model. It still blinks on and off then just goes out. I have to unplug and re-plug it to try again. I may have to replace the power board according to my brother and a few friends. An yes I do have a solder gun and all the good stuff here lol.