I tried also turn on laptop on SMC bypass and all missing rails have a right voltage only PPVCORE_S0_AXG2_L & PPVCORE_S0_AXG1_L are not present.Īny ideas ? Is any chance that something else could cause this issue.

Have you experienced this error before UPDATE. I tried all the usual tricks, reseating the RAM, moving it into the other slot, still the same thing. :-( Out of nowhere this happened I have not taken it to the genius bar yet, google says its a ram error. I have thinking maybe CPU is not connected properly but I bit worried with next soldering attempt it will die as to many times heated up. As the title says, when I try to power it on, I get three beeps and then it shuts off again, indicating bad RAM (actually more like rustling noise, sounds like the speakers have had it).

There was no liquid damage on board with 3 beeps. 15IBD No display Things get more better :grinning: change another good ram ddrl3. Got it with 3 beeps issue have tired reflow ram replace PCH no luck I decide to replace CPU because it was getting crazy warm.Īfter replacement (I remove same CPU from Donner board) with was liquid damage but I was getting a display but it was too badly corroded to fix and many things doesn't work properly.Īfter CPU swap laptop is turning on with no beeps but there is no display no chime fan is spinning I measure board and no power on a main rails. then powers down after about 3 hours The lenovo ideapad 330-15ikb. I have this MacBook Pro for repair board 820-3332-A

Macbook pro 3 beeps not ram