Staff Answer
Sep 28, 2026 - 06:29 AM
If it runs but won't turn off, the power button on the front optical board is likely failing. The 623885 is just the plastic overlay. For N510s with serials above 9140559, the 628663/50724 optical board is the replacement (2–3 week lead time). Serials below that took a board kit, which is discontinued.
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