We're not talking dead or stuck pixels here, we're talking 2 huge black round spots maybe 1 inch in diameter in the top left and top right corners if the display. Any ideas?
-
-
Re: Black spots on dell e172fpb LCD
None at all, could you take a picture of it?
And I take it this will be the same no matter what PC it is connected to, or can you get it to display a test picture with no cable connected at all?"The one who says it cannot be done should never interrupt the one who is doing it." -
Re: Black spots on dell e172fpb LCD
Even disconnected from any PC it's the same.
Left corner:
Right corner:
Left corner with the test screen on it:
It's literally just these 2 black dead spots that show up as black circles no matter what is displayed there, or what angle the screen is at.Comment
-
Re: Black spots on dell e172fpb LCD
looks like something hit those spots.
maybe someone grabbed it to pick it up and mashed in the corners with thumbs.Comment
-
Re: Black spots on dell e172fpb LCD
Is there any way to repair it if that's the case, short of replacing the screen?Comment
-
Re: Black spots on dell e172fpb LCD
In a word, no.
It seems a little unusual its so round though, normally when people rough handle TFT the fracture[s] are more irregular than that. It looks like somethings been stood on or dropped onto it intentionally.Last edited by Harvey; 12-11-2007, 05:38 PM.Comment
-
Re: Black spots on dell e172fpb LCD
It looks like someone put a coffee mug on it or something or the monitor fell over and hit something round.Elements of the past and the future combining to make something not quite as good as either.Comment
-
Re: Black spots on dell e172fpb LCD
I've got a similar problem with my monitor - but I'm sure that nothing at all has banged against it.
I'm wondering if it is condensation? * The central heating has broken down & so it is cold here & has been for nearly two weeks now (big aww of sympathy please). My spots started to appear last Sunday & grew quickly - though they seem to have stopped growing in size (I really hope they don't get too big) Also it looks like I have a baby spot growing next to the lowest one.
They look a little like eclipses. If you press on the spots, stray black pixels sort of squeeze out, but then go back into the main round mass.
I'm hoping that when things warm up again, that they vanish.
What does anyone reckon?
The dreaded black spots or eclipses:
----------
* condensation or one of the cats decided to spray the monitor in two places - yuck yuck.Comment
-
Re: Black spots on dell e172fpb LCD
Just realised that I've posted in the wrong place -SORRY. The photo is of my lcd pc monitor & not of a tv - however, it does look like Yoshi & I have the same problem. Fortunately, mine is not such a big problem as Yoshi's & I can still use my screen.Comment
-
Re: Black spots on dell e172fpb LCD
When I used to work on LCD projectors I saw this alot it was due to the organic compounds in the LCD panel breaking down due to UV light and high heat.
This circle pattern was always there.
It looks like the TFTs aren't responding thats why you are getting black maybe moisture has migrated into those spots or the panel froze at some point destroying those areas.
This is only speculation the only confirmed cases of LCD failure I've seen are on old LCD projectors as mentioned above.
Dell isn't known for their high quality LCDs.
Just look what happened when they tried to make the W1700 TV
.
They don't even make them anymore.Last edited by Krankshaft; 02-01-2008, 10:39 PM.Elements of the past and the future combining to make something not quite as good as either.Comment
-
Re: Black spots on dell e172fpb LCD
It also wouldn't hurt to try unplugging and replugging the cable from the video board to the LCD it could be an intermittant contact problem.
Getting into those Dell LCDs is a real PITA they don't use screws on the plastic casing.
First remove the stands 4 screws and pull the stand off.
The casing is held together with clips around the perimeter. I used the bottle opener on my swiss army knife I put it through the ventilation slits to press the visible tabs outward while gently prying the cover off clip by clip.
Of course the casing clips together easily on reassembly.
Thats clip together cases for you easy to assemble a PITA to disassemble.Elements of the past and the future combining to make something not quite as good as either.Comment
-
Hello,
YouTube video of the problem encountered: https://youtube.com/shorts/q7TLNv36LUo
I am a pro and I have a problem that I have never seen despite my 7.5 years of experience on my own and my thousands of repairs, on a customer's Dell G3 15 3500.
On this PC I have already changed the complete palmrest because the keyboard was no longer working properly.
I also changed the screen because the PC fell and the screen was broken.
I changed the battery with a new and original battery.
I also had corrosion/oxidation on the... -
My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?
Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?
My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
I have tried multiple different Dell power adapters. My Dell... -
good morning all,
i purchased a used dell e6540 laptop used 10 months ago from a vendor on ebay. intel i-7 processor, 16 gb ddr3 memory, 256 gb ssd., mobo la-9413p (rev 1.0 dated 2014-08-04). i've inflicted no damage on it since purchase but its past is unknown. starting 2 weeks ago it began to fail to boot (initially 9 of 10 boot attempts failed, now 10 of 10 fail). there was no new hardware or software added (i was using as a kodi video server). the post process doesn't complete and booting no longer displays the dell logo screen - screen remains black with no backlight. some other... -
Hello,
I have a Dell G15 ryzen edition (ryzen 5) that turns on but won't post, black screen, keyboard lights on, caps lock led on, fans turns and the battery indicating light is showing 2amber and 1 white according to dell website it's a cpu failure, but i tried few basic things before i open it up i tested the screen by pressing the d button before powering it up but it didn't show anything i tried the ctrl+esc for bios recovery but still black screen i tried refreshing the screen, i plugged it on an external monitor but same thing. Next step i unplugged the battery and kept pressing the... -
So I've had this monitor for probably a decade now, and it's finally starting to fail. Began with a little sporadic flickering, then eventually started going black (power LED stays blue, can still see image on screen with flashlight). A power on/off fixes it for a bit, but then it happens again. Once it got to the point I was dealing with this every few minutes, I opened it up and just replaced all the caps (minus the big one) on the power board with new Panasonic ones. All the old caps tested fine on an ESR meter, and this worked for 5 days. But the screen just went black again today, so...
Comment