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820-2877-B missing PM_SLP_S4_L
Hi guys, I''m struggling with troubleshooting on 820-2877-B. No visible damage, everything looks clean. S5 rails are OK, but PM_SLP_S4_L is 0V Any suggestion what I can check or MCP is dead? Board doesn't power on and magsafe LED is dim. Thank you!- Mirarty
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- Forum: Macbook Logic Board Repair Questions