Help with Vader's Vault Havoc repair
So a very long time ago, I bought a lightsaber at a con and I recently pulled it out of my garage to find that the electronics weren't playing nice anymore. I did some reverse image searches and it's very clearly a Vader's Vault Havoc (though I didn't buy it from them directly). Well, Vader's Vault doesn't sell their old electronics anymore.
I'd really like to get this back into working order, but I don't know where to start to find a replacement kit that I can solder in. I'd prefer to keep the buttons intact and just replace the battery holder, sound card, and speaker. I don't think I can just drop in electronics from another maker.
Any opinions would be appreciated and I can provide pictures if that would help diagnose the issues.
(And before anyone asks, yes, I did try to find another source of the electronics, but nothing turned up.)