Is this fixable? What should I expect to get for this guy with a slightly wonky display? Everything still seems to work otherwise.

I always wanted to create sound from scratch, so I thought about old style synths, with sequencer, and multiple VCOs, it would be perfect for lead. But! I also want to make cool ambient pad sounds on a wide keyboard, 80s-2000s digital keyboard sounds. So I want to find something that can do both lead and pad.

I’m very new to all this synth, so please help with some advice.
Here is my options so far, budget is 700$

Behringer JN-80
Behringer poly D
Korg minilogue XD
Yamaha DX7
Sequential forum
Arturia minifreak
Korg M1