I just purchased a year 2000 Panasonic DVD-H1000 which arrived safely and unharmed and which looks pristine, as though it has never been touched by human hands. However, it refuses to power up, either with the panel buttons nor the remote.

I have some spare parts for this unit on hand and I changed both the main power transformer and the little power board that serves as the entrance of the AC power to the player. I tried different power cords, and yes, my wall outlet is live.

Something like this happened to me with a McIntosh 831 DVD player a while back. It was perfect. I shipped it to someone and it arrive refusing to power up. I was so disgusted that I just told him to keep it free of charge. I never found out why this happened.

Please tell me the next place to look for the cause of this problem.