Hey all, got a a MBA the other day that was 3 beeping me. Checked out the voltage going to the ram and it is sitting at 1.35V. The schematic says 1.5V and with ram, I know that could be a big difference but wasn't too sure as i though desktop ram is normally around that 1.32v range. Maybe my brain isn't working right there.
So, I think the ram is getting OK voltage, and not normally accepting 3beep issues, I reflowed (reflew?) the ram. I left the heatsink on the CPU thinking it would wick excessive heat off and verified each ram was melty by micro bumping it (cant see it dancing with my microscope.)
I use way too much flux like good ol Rossman in his most recent 3 beep repair here he did the same.
The computer booted right up afterwards with no issues, until i noticed that there is no SN under system info - it says not available (or the equivalence in spanish) Then a minute later, the image became distorted and froze up. I tried a few more times until it gave me a 3 beep error again. I let it sit for a few min, and the it booted up again. So something heat related?
Any ideas where to go from here? Is that 1.35V ok for PPDDR_S3_REG?
Thanks!
So, I think the ram is getting OK voltage, and not normally accepting 3beep issues, I reflowed (reflew?) the ram. I left the heatsink on the CPU thinking it would wick excessive heat off and verified each ram was melty by micro bumping it (cant see it dancing with my microscope.)
I use way too much flux like good ol Rossman in his most recent 3 beep repair here he did the same.
The computer booted right up afterwards with no issues, until i noticed that there is no SN under system info - it says not available (or the equivalence in spanish) Then a minute later, the image became distorted and froze up. I tried a few more times until it gave me a 3 beep error again. I let it sit for a few min, and the it booted up again. So something heat related?
Any ideas where to go from here? Is that 1.35V ok for PPDDR_S3_REG?
Thanks!