Technical information

Exploded View 6
Power/Analog/Video Boards
There are two part numbers in service stock for the power/analog/video board on the iMac
computers (Early 2001) because there are two vendors manufacturing the boards. The part
numbers are 661-2465, Ver. 2, HH and 661-2466, Ver. 2, LG. These boards must be
exchanged like-for-like.
The 661-2465 board has a switch at location SW901 that must be set for the type of CRT
tube in the computer. The switch settings are silk-screened on the board near SW901. If the
power/analog/video board or the CRT are replaced, make sure to set the switch to the
appropriate position (either to LG or CPT).