Re: Acer X223w turns on a few seconds then shuts down.

Update: So I noticed one of the high voltage ceramic caps what a bit discolored, so I ordered a few of those and replaced the two next to the transformers. When I tested the monitor disassembled it exhibited 3 different sets of symptoms. 1) It would work for a minute or two then revert back to the classic 2 seconds than black set. 2) it would work but with intermittent partial flashes of black screen 3) classic 2 seconds to black.
In all three of these scenarios, when the power was turned on and the d-sub wasn't connected...

Re: Acer X223w turns on a few seconds then shuts down.

That turned out to be the CCFL plug when I stupidly plugged in only one of the two in the set before I realized I needed to replace the tested CCFL with an alternate.

Re: Acer X223w turns on a few seconds then shuts down.

So the same symptom applies when I checked all 4 CCFLs, I even plugged in 4 separate CCFLs and got the same 2 second on, then off result.

Any more ideas?

Re: Acer X223w turns on a few seconds then shuts down.

update: finally got around to ordering and replacing all the capacitors.

Good news: I most likely did it correctly

Bad news: monitor has the same issue.

I guess this means onto finding a replacement ccfl and testing that.

Re: Acer X223w turns on a few seconds then shuts down.

A few quick newbie questions. When I am reading my DMM and it is set on 2k and I get a reading like .490 do I assume that reading is .490 of 2k ohms? (i.e. 980 ohms)

Could someone indicate which other pins I should be testing on the transformer. It would be fantastic if I could get a markup on a picture. Attached is what I observed holds the transformer in place, but the row of pins I circled in yellow seem like just an attachment to the board.

Judging by the wires, is this a 2 or 4 CCFL monitor?...

Re: Acer X223w turns on a few seconds then shuts down.

thanks for the reply. I had stumbled on that page before but favorited the wrong one and couldn't find my way back. I'll run through it and see what else I can find out.

The resistance is within 1% of each other measuring across the red and yellow.

Greetings everyone this is my first post here. I generally like to fix things myself when they go bad, but this is my first foray into replacing anything on a PCB.

As stated in the title this is an Acer x223w, it powers on for a few seconds and then shuts off, and the power led remains on and blue colored.

I used a flashlight while it was in this state to turn the brightness down, so the display is still visible with some extra light. I tested each set of two CCFL wires then swapped them and still achieved the same result (on, displays image, then off 2 seconds later)...