Scherm zwart van de een op de andere minuut. Niet meer werkend te krijgen.

⟐ Answered augustus 08, 2019 at 8:05 MST

So far, I've tried cleaning the contacts with rubbing alcohol. This made them more visually attractive, but did not solve the problem.

Second, I tried using another macbook pro, but it had the same issue.

I've noticed that the thunderbolt connector heats up significantly when it's in use. I'm wondering if there's a heat-related issue that could be causing a broken connection in the electronics inside the connector. Any thoughts?

⟐ Commented januari 06, 2025 at 8:33 MST

⟐ Answer edited februari 01, 2023 at 22:29 MST

All blogs read Replace one of the following:

•Power Supply

• Logic Board

• LCD Panel

Since Im getting power Ive ruled out the power supply.

Next, on to the Logic board.

What needs to be checked? Capacitors?

Please confirm the most likey suspects.

Thanks

⟐ Commented oktober 20, 2025 at 11:55 MST

⟐ Answered april 06, 2024 at 3:48 MST

I have an LED cinema display 24" from 2009, I have excatly the problem that the screen blanks out after a 1 sec flash of the image (probably LED driver signal turns down). I was about to try the bypass solution above for the 3.3V drive input, but then wanted to ask first if the same backlight strip probem problem could be on my LED Display as well, because I would not want to loose the dispay dimming possibility.

update:

So I did take the LG LCD panel apart in search for the notorius LED Strip, see pictures:

Taking the LCD apart:

The LCD frame,

The Backlight panel,

The plastic frame,

The glass of the panel,

The back plate,

Finally getting down to the LED Strip

So I did resolder the LED connector (just added some solder to it and re-heated the 5 pins again thoroughly), but my problem still persists, the LED stripe only flashes quick at connection display port connection time. I am considering of doing some logic measurements tonight with my oscilloscope for the LED driver, but the willi fix for bypassing the 3.3V is starting to sound tempting (still trying to find out the real reason for this failure, and I have to admit that the LED stripe fault sounds more plausible to me due to the drive signal LED shutdown after one second flash.

@io nut

I made some advancements with the display but the reason for the fault is still unclear.

All of a sudden the LEDs decided to turn on again.

I am convinced that it has something to do with the horizontal positioning of my setup. While lit I quickly checked the LEDs and realised that Led nr. 27,30,40 and 60 are out. Next day when I started the display the background lighting did not lit again.

I figured it might have something to do with grounding and tried out connecting the displayport without the USB cable. No effect the LEDs turn on with or without the other USB connector and/or the Powerconnector. I realised that the LED cinema display brightness can not be adjusted without the USB cable connected to the my macbook pro.

LED illumination pattern 2/3 Leds.

LED illumination pattern every third LED

So after all the MODs my display is running again. Eventually I ended up only changing 9 capacitors (3 pcs of each of the black ones in the pic, the orange ones I still have originals) on the powersupply,

and resoldering the LED stripe connector,

in addition I assembled and reassembled the display several times (loose connectors).

So Im still not convinced about the source of the fault and Im now testing the display for a week, lets see if it actually stays on.

My Apple LED Cinema Display 24" is still up and running.

Unfortunately I have to report that my LED cinema display died again after one month of fluent usage. So Im back to square zero. :!

I decided to try out if my display runs and it seems to run again :). So lets see for how long, but I am suspecting some sort of capacitor voltages that are incorrect due to capacitor ageing.

⟐ Answer edited januari 22, 2025 at 7:35 MST

Also, if you've have taken one apart, how long are the CCFL's and what diameter?

I'm trying to find some replacements.

Thanks

⟐ Commented maart 29, 2021 at 18:11 MST

⟐ Comment deleted januari 20, 2022 at 5:44 MST

Please help.

⟐ Commented oktober 30, 2020 at 13:56 MST

Hi guys,

My Apple Thunderbolt Display has a stain from inside.

How I can fix it? I really believe it's on the glass as I took a screen shot of this area and the scree shot show pretty clean I mean, no stain at all. Does it make sense?

I'm afraid to remove the glass before to be 100% sure.

Tks a lot,

⟐ Answered oktober 06, 2021 at 3:11 MST

Problem is that after putting the foot back on, I cannot get it to go back upright. There is some kind of latch preventing the stand from going upright and the little plastic card that came with the VESA kit does nothing to release this latch.

Getting the foot off was easy but getting it back on is proving to be very difficult. Any tips on how to get the stand to release back to it's upright position?

⟐ Commented december 30, 2022 at 19:29 MST

With backlight set to low, it's not too audible. Up the backlight to the max, and the buzzing is now very loud.

When I removed the front panel, to check which component make the buzzing, it appears to be behind the LCD panels. I didn't go further.

Where could I get the required parts?

Any ideas?

Thanks in advance

⟐ Commented juni 11, 2019 at 0:07 MST

⟐ Answer accepted oktober 05, 2016 at 14:14 MST

I have no FireWire ports on my Laptop so i can’t try out the FireWire capabilities.

I tried the USB connector and Windows detects it as „generic USB Hub“ but doesn’t detect USB devices or flash drives plugged into the monitor.

I don’t have a DVI port and I ordered an adapter so I can’t test connectivity yet.

Does it need a video signal to turn on? I’ve been holding down the touch power button, Double and triple pressing it - no avail.

am i doing something wrong?

⟐ Answer accepted april 17, 2023 at 19:58 MST

After many times unplug the power cable and plug it in again, the picture came back. Unfortunately, it disappears after 30 minutes and does not come anymore. The picture was good, no mistakes.

What could it be? Power cable to the iMac or power supply?

Has anyone else had this problem and how did you fix it?

What would be the most sensible to replace?

Many Thanks

⟐ Commented april 23, 2020 at 16:17 MST

⟐ Commented september 13, 2018 at 6:55 MST

⟐ Answer accepted oktober 16, 2015 at 4:45 MST

So, even when using the new power supply plugged into the wall the power-on light on the monitor remains dark.

My regular repair shop says can't be fixed, but I noted that mother/inverter boards are only $50 online. Can anyone tell me if they are mistaken and that it can be fixed or does it sound like time to take it to the recycling dump? (i.e. replace inverter board).

⟐ Commented februari 16, 2018 at 6:55 MST