Samsung UE32B6000VW Service Manual page 32

4. Troubleshooting
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.
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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
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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 CN1001?
Diagnostics
A power is supplied to panel appear
4-8
relay on?
Yes
Does proper Stand-By DC
Yes
Does proper Main DC B12VS,
B5V,B13V appear at the the PIN23,
PIN15, PIN9 of CN1001?
Yes
Does proper DC A3.3V appear at the
Pin5 of IC1002?
Yes
Does proper DC B3.3V appear at
1pin of IC1005 and IC1008, B9V
appear at 3pin of IC1003?
Yes
Does proper chelsea core 1.2V, 1.8V
appear at C1032, C1033?
Yes
at C7136?
No
Check a connection power cable.
P/N: BN96-09872A
Change the Main Power assembly
40" / 46" : BN44-00269A
No
55" : BN44-00271A
No
No
Change the IC1002 or the Main Assy
Change the IC1005, IC1008, IC1003
No
or the Main Assy
BN94-02706A
Change the IC1007, IC1008
No
or the Main Assy
Check a other function (No picture part)
Replace a LCD Panel
No
40" : BN07-00700B
46" : BN07-00701B
55" : BN07-00702B