Dell E2209WC - Power LED Flash

[fuzzystyle]

Hello, first time poster. Would love some help trying to get this monitor working, so glad to find this forum for help with this kind of stuff.

Dell E2209WC, as soon as the power cable is plugged in the Power LED starts to flash on and off. I don't know if my brain is playing tricks on me, but it looks like the backlight of the screen very faintly turns on and then off in sync with the power led, but very hard to notice.
Here are the pictures. I couldn't notice anything too bad. The brown caps on power board seem a tad "bulgy" to me, but my co-worker said they usually pop/crack open when bad.


Let me know if you need to know anything else, would really like to get this working

[selldoor]

Re: Dell E2209WC - Power LED Flash

Almost the same shot as in the last picture can you take one showing flat across the caps. If you unplug the main board from the power supply what does the power led do.
when you switch on.
Do you have a multimeter and soldering equipment

[selldoor]

Re: Dell E2209WC - Power LED Flash

Read the attached
https://www.badcaps.net/forum/showth...hlight=E2209WC

Be aware that the reference to the two "fuses" on the back may not be totally correct.
They look to be zero rated resistors often used as links or jumpers. Anyway you can test for continuity.
The last post in that thread is by retiredcaps - after you have read through the thread read the link in his post where he says start at post 19.

[fuzzystyle]

Re: Dell E2209WC - Power LED Flash

Thank you for the reply, Unfortunately the power button / LED strip plugs into the main board. I have multimeter and soldering equipment.

Edit: Thanks, I will read the posts

[selldoor]

Re: Dell E2209WC - Power LED Flash

Caps look ok (not that that means much) just not obviously bad.
First thing to check is the High Voltage on the Big Cap
This should power up without the main board connected as soon as you plug in.
Set your meter on 600VDC and very carefully check the voltage on the cap. Try and hold it for a few seconds to see if it varies.(if you have crocodile clips for the meter use them) Do not touch any other parts -heatsinks or anything. Then switch off then plug in the main board and do the test and again when you have pressed the on button.
Do this very carefully could be 200- 400 volts.

[fuzzystyle]

Re: Dell E2209WC - Power LED Flash

I appreciate your responses, thanks. I will try and work up the courage to test the capacitors. I did notice that when I disconnect the LCD cable/inverter cables the power/main board seem to function fine, even letting me turn it off and on via the power button. When everything is connected as it should be as soon as the power cable is put in the power LED flashes, if I hit the power button the LED still flashes.


Edit: So when the LCD video cable is plugged in the unit just flashes its LED in a kind of "error mode"
I disconnected it and plugged in just the screen inverters to the power board, and despite a little hissing the backlight lights up grey.
So I assume it seems to be isolated with the LCD/LCD cable/Mainboard

[UniT3d]

Re: Dell E2209WC - Power LED Flash

Hmmm .....

Those are Elite capacitors, all those secondary caps should first be replaced.

[budm]

Re: Dell E2209WC - Power LED Flash

I see at least 3 caps with domed tops. They are sitting inline next to the yellow power transformer.