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View Full Version : Dell E152FPb no display problems


AmEv
04-30-2013, 04:43 PM
Got myself this monitor for only $3. Should've known that something was up, with it being that inexpensive.

Turns out, the LED turns on, but nothing else. It does see a signal, and the computer does recognize it down to the model number, but nothing appears on the screen, and it isn't just the backlight.

So, before I go nilly-willy on this thing, anything I need to test and check out?
f8l_0e
04-30-2013, 07:54 PM
You'll need to join the forum to download the picture of the stuff you'll need to check on the logic board.

http://www.badcaps.net/forum/showthread.php?t=18301
TLHarrell
05-01-2013, 11:47 AM
I just did the same thing with a 21" monitor I got from work that went black. Turned out to be 5 bulged capacitors on the power board. They were very easily identified. Three of them I was able to source locally for 3 cents apiece, the other two I had to get thru Digikey. Still, under $5 to repair. And I have another monitor from work that died the day after the first one... probably the exact same issue.

Pull the casing off and check the power supply board for dead caps first.
AmEv
05-01-2013, 08:41 PM
No bulging caps... Dang it.........
TLHarrell
05-02-2013, 12:27 PM
Ok,if you display an image on it, take it out in the sun or put under bright light, and look at some very low angles to see if there actually is something displayed on the panel. Even if the backlight is out, there will be something visible. Obviously, the control board works. So it's down to backlight inverter, backlight, or signal to the panel.
f8l_0e
05-02-2013, 01:08 PM
No bulging caps... Dang it.........

http://www.badcaps.net/pages.php?vid=5

See the last two sentences on identifying bad caps. They might have no visible signs of failure. Did you read the page I sent you earlier? It identifies the exact ones needed to be replaced including a micro fuse.
AmEv
05-02-2013, 01:34 PM
Nope, nothing on the display. Just the LED that's working.

Now, to find a working multimeter and cables to see what fuses are blown....
AmEv
05-03-2013, 01:13 PM
Just resoldered. Gonna get myself a DECENT multimeter. Still no backlight or display.
TLHarrell
05-03-2013, 02:22 PM
No signal between board and panel. What kind of connector is it using?
AmEv
05-03-2013, 03:39 PM
Looks like some sort of pin-based LVDS-style connector.

Panel model number is Chingwa CLAA150XG09.