Power Supply Board Fuse 1
There is a fuse on the AC line on the power supply board (at F901) that can be replaced if the computer has no power. (Refer to the "No Power" symptom for a full troubleshooting scenario.)
Before replacing the fuse, you should do a continuity test with an ohm meter. If the ohm meter registers "0", the fuse is good. If the meter registers "infinite," the fuse should be replaced.
Refer to "Testing for Power" later in this chapter for instructions on how to check the power supply board fuse. Refer to "Logic Board" in the Take Apart chapter to locate the fuse on the power supply board.
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