Thunderbolt woe

I hear ya but... it's not dead yet. My Thunderbolt Display just started working again! After trying every combination of cable connections, power-up and -down steps, and transition / ejection steps from my MacBook Pro laptop to the Thunderbolt Display resulted in a non-flickering but blank screen, a week passed while I researched a new display and used just my laptop. Then, with my laptop open and still connected from a USB-C port via a Thunderbolt 3 (USB-C) to Thunderbolt 2 adapter to a USB-C port on the back of the Display, on a whim, I disconnected and reconnected the power cable from the Thunderbolt Display and voila, the display came back to life!

Now, this not being my first rodeo, I am assuming from my been-there, done-that history with this Thunderbolt Display that at some point in the not too distant future, the Thunderbolt Display will "die" again for the umpteenth time and I'll have to decide again whether to stick with it or replace it. But not today. Thanks for advice.

Just to make sure I understand to what you are referring... There are two cables that come off the middle, back of the display. The detachable power cable and below it, the permanent (cannot unplug) display cable, which has a Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter at the other end that I plug into one of the USB-C ports on my MacBook Pro. Sounds like you are suggesting replacing the latter cable with an Apple Thunderbolt Cable (2.0 m) from the Thunderbolt port that is in the series of ports on the back left side of the display to a USB-C port on my MacBook Pro, right? Seems I'll also need to use my Thunderbolt 2 to Thunderbolt 3 (USB-C) Adapter to convert from the Apple Thunderbolt Cable to a USB-C port on my MacBook Pro. And on the display end the Thunderbolt port seems smaller and more square than the ends of the Apple Thunderbolt Cable. So, I'll need an adapter on that end too, right?

OK, I tried that and unfortunately, it didn't work. No change -- Thunderbolt display is still very dim and flickering.

When transitioning from the MacBook Pro laptop screen to the Thunderbolt display, the laptop screen "blinks" once and the Thunderbolt display appears to "try" to come on but seems to "get stuck" and barely lights up and flickers. I have replaced the display power cord, the Thunderbolt 3 (USB-C) to Thunderbolt 2 adapter, and now the permanent display cable with an Apple Thunderbolt Cable but the problem persists. Any idea what's causing it?