Samsung RL23DATS Service Manual page 27

12-3 Responseless after power on
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.
Stablizer the 7812 output DC12V
the 7805 output DC5V
Stablizer
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
26
Y
Normal
N
Check and repair the
wire assembly
N
replace the transformer
N
Repair or replace the
display