My Cobra has been sitting on the shelf unused for 19 years. Every so
often, I energize it and check output and frequency to make sure it is
still working and in spec. It is an original 148 GTL made in the
Philippines, not the newer crap out of China. There is a difference
because I picked up a Chinese made one at a yard sale within the last
seven years and it was a very poor performer compared to the originals.
Anyway, at some point, I have had to replace the LED on almost every
radio I've ever owned but I eventually got smarter and began adding a
resistor to dim the display if there wasn't already a bright dim switch
present. Made a big difference to keep the LED's dimmed if for no other
reason than to extend life. After several replacements and a learning
curve, I always ran them on dim after that.