Panasonic SA-AK270EB Service Manual page 47

Step 3 Remove the Switch (Q2751) from the heat sink.
Caution: Handle the heat sink with caution due to its high
temperature after prolonged use. Touching it may lead to
injuries.
9.23.1. Assembly of Switch (Q2751)
Step 1 Apply grease to heat sink.
Step 2 Fix and screw the Switch (Q2751) to the heat sink.
Note: Ensure the Switch (Q2751) is tightly screwed to the heat
sink.
9.24. Disassembly of SMPS P.C.B.
Follow the (Step 1) - (Step 5) of Item 9.4
Follow the (Step 1) - (Step 7) of Item 9.5
Follow the (Step 1) - (Step 5) of Item 9.19
Step 1 Detach 8P wires at connector (CN5802) at SMPS
P.C.B..
Step 2 Remove 4 screws at SMPS P.C.B..
Step 3 Lift up the SMPS P.C.B. as arrow shown.
Step 4 Flip the SMPS P.C.B. and desolder 2 wires pins (red
and black).
Note: During reassembling procedures, ensure the P.C.B. is
seated properly at the locator.
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SA-AK270EB / SA-AK270EG