Primary Inspection - Samsung RL33EBMS Service Manual

Primary Inspection

1. Prior to trouble settlement, check if the powe
supply spec. is normal.
2. Check if the power botton on display is pressed or not.
3. If other troubles are found, please refer to the remarks on the next page to make an
inspection.
Test the 7812 output woltage
Test the 7805 output woltage
r socket is electrified and the connecting power
Start
Power on again
N
Is primary voltage of the
transformer ok ?
Y
Is secondary voltage of
Transformer ok ?
Y
Is display ok ?
Y
Replace the mainboard
subassembly
22
Y
Normal
N
Check and repair the
wire assembly
N
replace the transformer
N
Repair or replace the
display