Thunderbolt display does not charge macbook pro

Same here, I flipped it around and it started charging again.

You may also find it worthwhile to take to it with some vinegar and an old toothbrush - this is the same method you can use if an old battery has leaked inside a device (e.g.: cordless mourse, etc). After cleaning my Magsafe Adaptor it works both ways again.

For me, cleaning the heads of the MagSafe adapter with a cotton wool bud wet from some vodka did the trick!

Alcohol on a paper towel, cleaning the pins of the magsafe 2 adapter and it is back to charging.

Got the same problem with 2012 Thunderbolt Display and 13" Late 2013 MBP with Retina.

I've ordered new magsafe converter and it didn't help me at all..

despite that is a strange solution but after having connected an older Macbook Magsafe started to charge Pro again.

I have this problem too. Both my Thunderbolt display and MBP have MagSafe 1. The power cord out of the back of the display for the computer is hard wired. There's no way that I can see to replace any adapter. However, reading through this thread and realizing that it is probably a hardware issue, I tried pushing the power cord firmly against the computer and, Voila, it started charging. Likely this is only a temporary fix.

Same problem here. Thunderbolt display power adapter does not seem to work.

Here's another data point. I had the exact problem described here when connecting an Apple 27" LED Cinema Display (the TD's predecessor) to both a retina MacBook Pro (mid-2012) and a mid-2015 MBP. Swapping out the MagSafe 1 to MagSafe 2 adapter did not solve the problem; if I used a newer Apple 85W adapter with MagSafe2 plug, there was a mostly reliable connection. Eventually, the intermittent charging problem seemed to get worse (sometimes I would have to "jiggle" the MS1-MS2 adapter several times to get the LED on the MS1 plug to turn on), and at wit's end, I took the display to a local Apple Store. The "genius" diagnosed a faulty video/power cable on the display itself, and offered to replace it for about $85. I agreed, and the new cable did fix the problem.

However, they also left streak marks on the LED panel inside the display, and after I brought the display back for them to clean it further, they concluded that they had damaged the panel and offered to replace the 27" LED Cinema Display with a Thunderbolt display. For completely different reasons, I also wound up getting a new MBP (mid-2015) a bit later.

Well, only a few months after I received a completely new display and a new MBP, the problem has returned! 😮 So I'm at a loss to explain this. I'll try swapping out the MS1-MS2 adapter, but I don't know how the one supplied with the Thunderbolt display could have gotten dirty or damaged in so short a time. It did work flawlessly for a while.

Ditto.

My thunderbolt display isn't even one year old, and I need to tweak the mag safe adapter [to my 2014 MacBook Pro Retina] to get it to charge. I purchased the monitor at Best Buy, along with a maintenance plan and I am about to take it back to their store.

Apple is coming up with some shabby products.

I FIXED MINE!

How I did it?

Got a toothbrush, took off and cleaned up magsafe adapter, display charger adapter and the computer port. It's all working and charging now!

I found that the little wiggle room between the magsafe2 adapter and my MBP was the issue. If I position the connector in the upper right corner(up and towards you) of the port it will charge. Hopefully it works for some of you as well.

My problem is fixed by getting a new adaptor. I was skeptical at first, because the old adapter looks pretty clean. since i have a few of them stocked, i just opened a new one to try, and now it is charging. 🙂

This problem has been driving me crazy. Finally cleaning all of the contact points on magsafe converter on both sides, MBP Retina and Cinema Display cord with rubbing alcohol worked.

After the same problem occurred after a few months with a replacement adapter, I realized after much thought is that I had been keeping my MBP retina elevated on a laptop stand next to the display, and that the cables from the display would pull ever so slightly downward on the connection to the MBP (the cable was routed behind the desk and back up to the display). I've removed the MBP from the stand and placed it directly below the display, and since then, it has only happened once that the charging light on the adapter connector didn't light immediately when the display was connected to the MBP.

This solved the problem for me! Just wiggle the magnetic connectors (while plugged in) until you see the charge light (on the cable) turn on.