No Power Indoor (Initial Diagnosis) - Samsung AR09FSSYAWTNEU Service Manual

12-2-25 No power indoor (Initial Diagnosis) (Not displayed)
1.Checklist :
1) Is input power normal?
2) Is AC power linked correctly?
3) Is input voltage of DC_link capacitor normal?
4) Is the voltage of DC regulator normal?
2. Troubleshooting procedure
Unplug the power cord Unplug the power cord Unplug the power cord Unplug the power cord Unplug the power cord
Is the power cable from outdoor is Is the power cable from outdoor is Is the power cable from outdoor is Is the power cable from outdoor is Is the power cable from outdoor is
correct? (L, N - CN71) correct? (L, N - CN71) correct? (L, N - CN71) correct? (L, N - CN71)
Check the fuse open or not? Check the fuse open or not? Check the fuse open or not? Check the fuse open or not?
(F701,F702) (F701,F702) (F701,F702) (F701,F702)
Restart Restart Restart Restart er power er power er power er power
Is the power normal? Is the power normal? Is the power normal?
Press the po er b Press the power bu on on the Press the power bu on on the
display board display board
Is the DC_link voltage normal? Is the DC_link voltage normal?
C102(+)-C101(-) :270Vdc~320Vdc C102(+)-C101(-) :270Vdc~320Vdc
Is the SMPS is normal?
IC102 : 12Vdc-GND-5Vdc
Exchange the PBA
Samsung Electronics
YES YES YES YES
. . .
YES YES YES
on the
YES YES
YES YES
YES
NO NO NO NO NO
Reconnec he power cord correctly. Reconnec he power cord correctly. Reconnec he power cord correctly. Reconnec he power cord correctly. R h
NO NO NO NO
Exchange the PBA Exchange the PBA Exchange the PBA Exchange the PBA
Check the power source. Check the power source. Check the power source.
The remote control signal reciever on the display The remote control signal reciever on the display The remote control signal reciever on the display
NO NO NO
PBA is wrong PBA is wrong
Check the display board Check the display board
NO NO
Exchange the PBA Exchange the PBA
NO
Exchange the PBA
d tl
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