How To Check Fault Symptom - Samsung UN32J4000AF Service Manual

4. Troubleshooting

4-2. How to Check Fault Symptom

No power & no picture
„
Diagnostics
4-2
Check the LED of function
Yes
Open the BACK-COVER and check the
CN1401 connecter
Yes
Check the A13V of BD201
Yes
Check the Q206 base, voltage must be no
larger than 0.5V
Yes
Check the A5V of L202, B13V of BD207,
B5V of R234.
Yes
Check the A3.3V/B3.3V of Main IC
Check B1.8V of DDR IC
IC201#1, IC205#3, IC204#5
Yes
Check the 13V of LVDS
Q204#1/2/5/6
Yes
Change the LVDS
No Check link of AC voltage
No Re-assemble the Main board-Panel
No Change the Adapter
No Change the Main Assy
No Change the Main Assy
No
Change the Main Assy
No
No Change the PANLE