Buy a serviced and tested LG YSUS board 6871QYH039B and send your old dud to get even better price
Buy a working power supply board DPS-304BP-1 / RDENCA235WJQZ, then send your old defective dud to get credit!
Buy a working power supply board EAY43521401 / PSPU-J703B, then send your old defective dud to get credit!
EAY58316301 PSPU-J806A power supply repair kit for clicking on and off, failing to start LG 50PQ20-UA, LG 50PQ30-UA, Sanyo DP50749 P50749-01 and others
A DIY repair kit for a common failure in LG power supply board EAY58316301 / PSPU-J806A causing it to click right back off upon trying to power on.