I have zero experience with that light and sound kit, and the PDF instructions can apparently only be acquired by messaging Devin on Facebook.
But I have plenty of electronics and electrical experience generally. When you say...
"As we can tell the power gets the needed 12v from the batteries all the way up to where it splits between the light board and the amp. Once it reaches them both the amp and the light board the voltage reads like ~1v"
How are you performing this measurement? Because generally if you have 12V at the batteries but 1V at your components then there is likely a dead short somewhere that's drawing insane current from the batteries and drooping the voltage (or you have very, very bad batteries). So for me, first thing I would do is disconnect the batteries from the electronics (looks like that's easy to do for the middle board, but the amplifier will require desoldering at least 1 wire). Then measure how much voltage is actually going to those wires. If it's still 1V then you have a short in your battery wiring and need to redo that wiring.
If you have 12V, then next step is to unplug all the electronics from each other (including unplugging the ethernet cable to the wand) and then plug one thing in at a time, starting with the middle board and a single light (either cyclotron or power cell). See if you still measure 12V or if it goes down to 1V. Then plug in the other light and measure again. Then plug in the wand connector and measure again. Assuming you get that far, plug in the sound board but not the amplifier and measure again. Then finally, if you get this far, remove power from both the sound board and the light board and resolder the power to the amplifier and measure again.
By doing testing a single component at a time you should be able to find whatever is bad, because the bad thing will cause your massive voltage drop problem to reappear.
But I have plenty of electronics and electrical experience generally. When you say...
"As we can tell the power gets the needed 12v from the batteries all the way up to where it splits between the light board and the amp. Once it reaches them both the amp and the light board the voltage reads like ~1v"
How are you performing this measurement? Because generally if you have 12V at the batteries but 1V at your components then there is likely a dead short somewhere that's drawing insane current from the batteries and drooping the voltage (or you have very, very bad batteries). So for me, first thing I would do is disconnect the batteries from the electronics (looks like that's easy to do for the middle board, but the amplifier will require desoldering at least 1 wire). Then measure how much voltage is actually going to those wires. If it's still 1V then you have a short in your battery wiring and need to redo that wiring.
If you have 12V, then next step is to unplug all the electronics from each other (including unplugging the ethernet cable to the wand) and then plug one thing in at a time, starting with the middle board and a single light (either cyclotron or power cell). See if you still measure 12V or if it goes down to 1V. Then plug in the other light and measure again. Then plug in the wand connector and measure again. Assuming you get that far, plug in the sound board but not the amplifier and measure again. Then finally, if you get this far, remove power from both the sound board and the light board and resolder the power to the amplifier and measure again.
By doing testing a single component at a time you should be able to find whatever is bad, because the bad thing will cause your massive voltage drop problem to reappear.
Statistics: Posted by Nomake Wan — October 12th, 2025, 11:32 am