Apple IMAC User Manual - Page 229
Power Supply Board - 104, to check the power
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Take Apart Power Supply Board - 104 replacing the power supply board, test the fuse. Refer to the "Testing for Power" in the iMac Troubleshooting chapter for instructions on how to check the power supply board fuse. This fuse is an orderable service part and can be replaced by service providers.
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Take Apart
Power Supply Board - 104
replacing the power
supply board, test the
fuse. Refer to the
“Testing for Power” in
the iMac
Troubleshooting chapter
for instructions on how
to check the power
supply board fuse. This
fuse is an orderable
service part and can be
replaced by service
providers.