How To Replace The Inverter Pcb - Samsung RC090MHXEA Service Manual

How to replace the Inverter PCB

Power off the unit first and wait 2 mins till all the leds
go out.
Pull the two black cables off the front of the plastic
clips and remove the 2 screws. The PCB needs to be
pulled forward at the front by 50mm and then slides
out complete with the cooling fins.
Undo all 4 screws fixing the PCB to the cooling fins,
take off PCB. The fitting is the reverse of removal but
put more white paste (comes with the new PCB) on
the cooling fins first, make sure tighten all 4 screws.
When you plug the board back in leave the fan
motors and the compressor disconnected.
Power up the unit and check the 3 leds light on the
front light up, if they do turn off the power, wait 40
seconds and plug the compressor in and try again, if
all is ok now power off and plug in the fan motors.
Restart the power again and restart the unit.
Because E464 error is always
caused by the unit being flogged we want to know the
following information about the unit to make sure it is ok.
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