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820-2915 missing CPU VCORE
3 Beeps in both of the slots. I'm going to check U7300. Edit: Unfortunately I've 1.5V there.- bighead
- Post #7
- Forum: Macbook Logic Board Repair Questions
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820-2915 missing CPU VCORE
Changed U7100 now it beeps for ram in both slots.- bighead
- Post #5
- Forum: Macbook Logic Board Repair Questions
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820-2915 missing CPU VCORE
I checked the voltages on Q7950. These are measured ok: PP3V3_S5 PP3V3_S0 PP1V5_S3RS0_CPUDDR PP1V05_S0 On pin 4 I have nothing. 0V U7960 is not on the board. Only different voltage is PP5V_S0 which is present. PP1V5_S0 is present PP1V8_S0 is present PP5V_S3 is present PP1V05_S0 is present...- bighead
- Post #3
- Forum: Macbook Logic Board Repair Questions
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820-2915 missing CPU VCORE
Hello! This board was clean or cleaned before I received it. Can't see any corrosion. It does not charge the battery and it won't turn on from just power adapter. If I install battery it goes to S0 state, but no CPU VCORE. Fan is not running. GPU gets hot. Missing ALL_SYS_PWRGD so no...- bighead
- Thread
- Replies: 10
- Forum: Macbook Logic Board Repair Questions