Hi! A few days ago my Sony MHC-GPX8 mini-component started dialing PROTECT E01 when I turned it on; I read the manual and followed the steps to leave it disconnected for at least 30 minutes and check the speaker connections but nothing worked. I left it like that for about a week since I am very busy, today I turned it on again and now at the moment it marks PROTECT E03. How do I solve this? Thank you! It is worth mentioning that the equipment has a year of use and all its parts are original, I did not make any speaker changes.