I presume you already spoke with your portero. Mine went on a blink a few months ago and I thought I was going to get a new one - my portero in the building cleaned it up some and then turned it off and turned it on again and BAM, it worked. Saved me a trip to Fravega.
That is if you live in a condo building or something. Otherwise disregard this advise.
That is if you live in a condo building or something. Otherwise disregard this advise.