I am in the process of trying to repair a controller board for a Hitachi NR90GC nail gun. The gun has no mechanical reason why it won't work. So I am assuming there's an issue with the PCB.
I've draw a schematic of the pcb by tracing/probing around the board to help try and find out why its not working.
Firstly can you just have a look at the schematic to check if I have made any obvious mistakes.
Secondly can you give me a clue as to what the main IC (U1) could be, as the IC only has the marking of the model number of the nail gun on it. Could it be a custom Chip? There's a few other components that I can't find info on but I can manage without that for now.
Thanks in advance
I've draw a schematic of the pcb by tracing/probing around the board to help try and find out why its not working.
Firstly can you just have a look at the schematic to check if I have made any obvious mistakes.
Secondly can you give me a clue as to what the main IC (U1) could be, as the IC only has the marking of the model number of the nail gun on it. Could it be a custom Chip? There's a few other components that I can't find info on but I can manage without that for now.
Thanks in advance
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