Well, I have restored the POD and the problem persists, I have updated the firmware and the problem persists, it is a pity it has been overnight, I am not very good at what to do now. I bought the POD in 2012, it has never left home has never fallen or received blows, has always been in perfect condition.
In my city there is no technical service line 6 and I don't feel like having to send it out. I have to think.
I want to thank you hurghanico for everything you have bothered to help me, I wrote the problem in more forums and you were the one who worried the most.
Many thanks