Re: Acer S231Hl long to start up.

Cross-linking thread: [URL="https://www.badcaps.net/forum/showthread.php?t=24817"]https://www.badcaps.net/forum/showthread.php?t=24817[/URL]

The board was used in this monitor linked by bundm. Will this help me? Also thank you everyone, I'm really learning a lot about circuitry. Re: Acer S231Hl long to start up.

Cross-linking thread: [URL="https://www.badcaps.net/forum/showthread.php?t=24817"]https://www.badcaps.net/forum/showthread.php?t=24817[/URL]

The board was used in this monitor

Re: Acer S231Hl long to start up.

Uploading clearer pictures of trouble board.
As you can tell, I had a bit of trouble with C716 capacitor and dropped a bit on t he board. When I heat the board up, it still works, so I doubt I did any real damage....

Re: Acer S231Hl long to start up.



Occasionally it never powers to the acer logo when plugged. Not only is 50 seconds long, but it was just one instance where it was turning on in under 1 minute. I have left the monitor plugged for an entire day and it would not turn on.

I have changed the caps to good quality caps now, with same voltage and uF values from Nichicon (purchased from digikey).

It seems when I take a blow dyer to heat the main board, the monitor powers. It powered with the bad caps, so I replaced with proper digikey caps,...

Re: How accurate are some Capacitor specifications?

I retract my question! When I went looking for "polymer" caps like the one I'm trying to replace, I found many caps around and UNDER that range. I'll leave everything in case some one else has the same question

I think I changed my capacitor with an incompatible one, and I'm about to purchase another, but I'm a bit confused on the information.
Here is the information on the capacitor I need to replace:


The 10A 470uF. The ESR max is 20mOhm?! That's ridiculously low I think (I am browsing digkey for a replacement. Even here, when I looked at the 470uF 10V capacitor that badcaps sells, the sheet said .072ohm =72mOhm
[url]https://cdn.badcaps-static.com/pdfs/55c5a159697fc5aca4d7e3d3dded1822.pdf[/url]

I'm not sure how close this number needs to be, but...

Re: Acer S231Hl long to start up.

I noticed I actually DIDN'T replace only 1 capacitor on the inverter board? When I plug it in without this board connected, it still runs though, so I don't THINK it's a problem, but why not. Also when I don't plug the top cord in, the backlight works and I don't get the blinking, but of course, no video. Idk. I may toss it after this. I added more photos....

Re: Acer S231Hl long to start up.

Ugh this taking long to start up thing is a real pain.
Other symptoms include:
If I turn on the computer for a couple of minutes, then turn it off, the "ACER" logo displays on the screen as it powercycles 10-12 times. This is followed by the standby mode (yellow light) and "Cable Not Connected" on screen. This displays for about a minute then disappears. Turning on the computer just repeats the powercycling process (without ACER logo).

Shining a bright light during the powercycling reveals greenish...

Re: Acer S231Hl long to start up.



It measures 19.05 V inside on the connectors. The external power supply does state it steps down to 19V on it, so I assumed it was working correctly. I had an extra 19V adapter nearby though, and tested as well. After a few minutes, both "work". The time that it takes for the monitor to turn on varies.

As to the monitor not starting. I am seeing lines on the screen when using a flashlight, that flicker out while it powercycles.

I've included a youtube video.
[url]https://www.youtube.com/watch?v=Muw7cfirvRw[/url]...

Re: Acer S231Hl long to start up.

Sorry it took so long!...

Re: Acer S231Hl long to start up.

Not sure if I mentioned this is an LED monitor.

First, I apologize for including a picture of the same model board that is not my own. I have work to do and will take it apart later.

I have been having trouble with my board the past couple of weeks. When plugged in, the power blinks blue. It occasionally becomes solid and stays on after a while (while I use my other monitor). Occasionally it works upon startup, but mostly, it remains a black screen and keeps attempting to turn on (power light blinking).

I found a similar thread with my problem though with a different board: [URL="https://www.badcaps.net/forum/showthread.php?t=38642&highlight=acer+blinking+power"]Similar...

Re: New Members - please post your introductions here

Hello! Just dropping in to ask a question, hoping someone will have the same question as I do, use search and have their answer immediately.