Fast Cars

I was able to fix it with vinegar. (Not really a clean one either, standard Norwegian Idun vinegar made for making food.) After maybe two years without use and leaving the batteries in, one of the batteries had leaked solidly onto the metal contact below in my TBP12 transmitter in my G50 system. Swapped the batteries, absolutely no response in the unit. The metal contact was full of that white stuff, so it was pretty clear the battery was probably not making contact at all with all that white stuff covering the metal bar. Dipped a cotton swap (q-tips) in the aforementioned vinegar and gave it a good run for a few minutes down there till all of that white stuff was off. It did leave a vinegar residue and smell down there, so I used a solid amount of compressed air to disperse what was left. Was unsure of what blowing it further into the unit would do, but I hoped it would at least disperse it into smaller particles. Since it was still smelling ever so slightly and I suspected some drops were left further into the unit, I let it dry for a few hours. Powered it on and have been using it for a few hours now without any issue. I think maybe I would rather recommend using isopropyl alcohol for safety, but I just wanted to report that in my case even that risky method worked really well. Will edit my post if further down the line and closer to concert in one month it at some point fails! But I'm guessing it survived my raw vinegar treatment really well.