I'm hoping someone can help diagnose this issue. I have a Samsung LN40a55p3f LCD tv. When plugged in there is no standby light, and nothing happens when I try to power it on.
I replaced the PCU with a 100% working PCU and nothing changed. A friend suggested that it might be the main board, but I can't figure out why the standby light isn't coming on.
I have done multiple searches for a solution, but I haven't found anything other than a faulty PCU being the issue for no standby light.
Any suggestions from people who have experience with this issue would be great.