LG CJ98 Service Bulletin page 11

9. Model : OM4560, OK45
Main PCB : EAX66565602
ECO NO : EKNJ400042
Change Details : R596, R597 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W)
* It should support only the model that produced before 2019.4.8
EAX66565602 Main PCB (The bottom surface)
Service Bulletin
Page 11
Product : Mini / Onebody / Louder
Bulletin # : PNZ201900013-01
Release Date : 2019.08.22
Check the chip resister value
with Multi tester
After checking R596 or R597 resister value
-If it is about 4.7KΩ, Change Main board
-If it is about 470Ω,
We don't need to change Main board