Power Failure - Samsung BQ1Q4T090 Service Manual

4-1-13 Power Failure

No Power
- Check terminal block voltage, 230V.
- TCO open Check
(main TCO, Convection TCO)
- Check the input voltage of PCB
SMPS (input checkpoint : 230V )
Replace PCB or display PCB check
YES
YES
YES
Reset The circuit braker or
NO
Check main power
NO
Replace TCO
NO
Repair Faulty wiring
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