Percussive maintenance should always have a chance of success. Giving something a good whack can align misaligned components if you're lucky enough.

Even when those components are electrons. Just go with it.

Transcript

Han: Fire up the engines, Chewie.
Leia: Luke! Meet at rendezvous point Upsilon.
Luke: {over radio} Not over an open channel!
Leia: It's a freaking code name, Luke! Get it together!
Darth Vader: {over radio} You forgot to say when.
Chewbacca: It is imperative that we depart, post-haste.
Han: Not a problem. You fixed the ship, right?
Han: Firing it up.
GM: <roll> The lights go out in the cockpit.
[SFX]: Beeooo..
Han: Oh man! I thump the bulkhead.
[SFX]: thud!
GM: Okaaay... Mechanic check at -12. And with your level in Mechanic, that means—
Han: 20!
[SFX]: ...oooeep!
Chewbacca: Can you do that trick on the engines as well?
C-3PO: Would it help if I got out and made a giant catapult out of duct tape and icicles?
Han: Oooh, good idea.