This is regarding LED Christmas lights
I have been working with a volunteer team to put up thousands of LED Christmas lights and incandescent lights.
The light strings that are working at the end of the season are coiled up and placed in totes and placed in a storage shed.
When we have pulled them out and started stringing them we discovered quite a few strings have only half the string working. I have read where the LEDs are steel and can rust and can create an open circuit.
I believe that open circuits don't damage anything else. But, a burned out LED will likely be shorted increasing the current in the circuit. That would be the same as removing the socket from the circuit and soldering the resulting leads together.
Now...Current in a circuit is the same throughout the circuit. So...if you removed or had several LEDs burn out and short, than this circuit would have higher current flow...and if this string was the first in a daisy linked chain of strings...would this endanger the entire length of this chain?
Some of our chains are 20 strings long and some are 40 strings long.
Supposedly this was per manufacturer. So would the higher current flow of the first string raise the current for the entire chain endangering and shortening the life of all those strings?