iPod video 5g hangs

Hello, i think I have a faulty motherboard, my iPod video hangs on the apple logo, with no hard drive in it. No error screens, it still hangs with a hard drive in it, but hdd doesnt spin up. if i knew which part controls the iPod boot up parameters I could possible swab it with isopropyl alcohol (no water damage) to clean it off and see what i can do.

anyone else got any ideas?

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