I have recently gotten a used LED sign, no power supply or anything, just the sign. After opening the whole thing up I found the words "Litek" and "LMM46-V0" on the back of the controller board. From looking over the boards im pretty sure that the power supply should be 9 volts, but I have no idea how to control it. The only control interface looks like a normal phone jack. Anyone have any ideas how to make this thing work? I cant even find Litek as a company anymore. Thanks everyone.
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