If you're not getting 12V at TP5, then voltage isn't getting to the board from J3-12. The 5V at TP1 is generated from that, so you won't see anything without it.
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If you're not getting 12V at TP5, then voltage isn't getting to the board from J3-12. The 5V at TP1 is generated from that, so you won't see anything without it.
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