I have a non-working v7 someone brought me. I can observe that with a disc in, it tries to spin and I can see the slightest little nudge when it tries. Without a disc in, the spindle spins pretty quickly for a second upon power up. Is this a weak chip? Which one is it? I have 2 Hakkos with chisel tips so it won't be hard to replace. But which chip is it? Or should I suspect the mechacon or something different? I tried to give it a fast spin with my finger to see if I could "jump-start" the spinning process but it didn't work.