I had a problem with a tactile switch on the old crt type tv
it was a profilo chassis pt92
one of the tactile switches was closed all of the time, and the unit would not come out of stand by
one possible explanation for this is the microprocessor was receiving a command from the tactile switch and also from the remote to take it out of stand by
Its possible, it could only deal with one command at a time
we see this on a remote control, try pressing two buttons at the same time