Mac, iPhone, iPad and iPod Help & Troubleshooting
What does this flashing LED mean?
This is the LED of a logic board (0171-2282-2281) of a 22" Apple Cinema Display (A1082).
As you can see, I already have replaced the LM1117. The replacement (LM1086) has the 3.3 V output. Unfortunately the display still doesn't power up.