Hi,
Check posts 60 and 63 to see if they will help you. If they don't, then it could be a bad card. Does the problem follow the card? E.g., if you swap the new card you put in the sub (you didn't indicate where you put it) with the...
Thank you for the most detailed fix procedure to date! I am sure this will help many others save $$$ and avoid the LG scam. LG should be covering this known defect free of charge even after the warranty is up. Makes for good customer...
Thank you for your input. Glad to see you have an answer to the firmware version issue. Let us know if you continue to operate trouble free in a month or so.
If only the center speaker works, your problem is beyond the wireless cards.
Also, are you still getting a red light on both your wireless speakers or just no sound?