Hello. I purchased this step-up converter a few days ago. Running power from this 3.7V LiPo battery, I tried to use the LM2577 to power a 12V screen, but it did not seem to properly supply power to either of the ones I tried. Screen 1 and Screen 2.

It should be noted that I tested both of these screens on the same video input using a 9V charger I have, and both of them worked flawlessly. I’m new to electronics so it’s possible that I created the circuit incorrectly, but this doesn’t seem to be the case. Here is a rough diagram of the circuit I’ve created:

All of the parts are within each other’s specs. Connecting Out+ and Out- directly causes a buzzing noise and the LED display turns off momentarily. Am I doing something wrong, or did I receive a faulty part?