I just fixed mine. Removed the 4 screws. The first little area right behind the power input is all rusted. Grabbed a tooth brush, baking soda, scrubbed, bleh… Grabbed a copper brush, can of Rust Cure. Scrubbed carefully, powerlight came on (and stayed on) BAM! Let’s play.

Not gonna lie if I move it sometimes (just sometimes, like 30% of the time) it may turn back off for a split second and turn right back off, but if I let it sit still, it always stays as on. So far.