820-3115 Common Issues

From LogiWiki - Your Wiki for all things Apple MacBook and iPhone related
Jump to navigationJump to search

One beep every 5 seconds

Check RAM and slot first!!

Hi, check and compare pch smbus connections R5201/R5200 diode mode, continuity and resistors value. Anything on the SMbus may cause the one beep error. More often the led backlight. If diode mode is low try removing R9753/R9757 and see if diode mode on smbus come back to normal value.