Samsung UE49K5502AK - 4-2-2. Main

4-2-2. Main
No power & No picture 
Diagnostics
Check the LED of function.
No
Check link of AC voltage.
Yes
Open the BACK-COVER and check the
10P power cable.
No
Connect the 10p power cable.
Yes
Check the A13V of BD211/208/214/209.
No
Change the SMPS.
Yes
Check the Q203 base, voltage must be
no larger than 0.5V.
No
Change the Main Assy.
Yes
Check the A5V of L310, B13V of Q201,
B5V of L203.
No
Change the Main Assy.
Yes
Check the A3.3V/B3.3V of Main IC.
Check B1.8V of DDR IC
IC201#1, IC204, IC208#1.
No
Change the Main Assy.
Yes
Check the 13V of LVDS
Q204#1/2/5/6.
No
Yes
Change the LVDS.
No
Change the Panel.
4-6
4. Troubleshooting