Samsung UN32B6000VFXZA Service Manual page 55

4-1-1. No Power
The PD board relay does not work when connecting the power cord.
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Symptom
The units appears to be dead.
-
The PD relay does not work when connecting the power cord if the cables are improperly connected or the
Main Board or PD is not functioning. In this case, check the following:
Check the internal cable connection status inside the unit.
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Major
Check the fuses of each part.
checkpoints
-
Check the output voltage of PD.
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Replace the Main Board.
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Caution Make sure to disconnect the power before working on the IP board.
When power on, check the sound of
A5V appear at the PIN 27 of CN201?
Diagnostics
A power is supplied to panel appear
IC207
IC202
relay on?
Yes
Does proper Stand-By DC
Yes
Does proper Main DC B12VS,
B5V,B13V appear at the the PIN23,
PIN15, PIN9 of CN201?
Yes
Does proper DC A3.3V appear at the
Pin5 of IC202?
Yes
Does proper DC B3.3V appear at
1pin of IC208 and IC210, B9V
appear at 3pin of IC205?
Yes
Does proper chelsea core 1.2V, 1.8V
appear at C246, C236?
Yes
at C1019L?
IC208
IC203
No
Check a connection power cable.
Change the Main Power assembly
No
No
No
Change the IC202 or the Main Assy
No
Change the IC205, IC208, IC210
No
Check a other function (No picture part)
No
4. Troubleshooting
IC205
IC210
P/N: BN96-09873A
40" / 46" : BN44-00269A
55" : BN44-00271A
or the Main Assy
Change the IC203, 207
or the Main Assy
Replace a LCD Panel
40" : BN07-00700B
46" : BN07-00701B
55" : BN07-00702B
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