Then a whole string or perhaps a half string circuit would go out.
Troubleshooting led christmas light strings.
I fixed mine by taking a copper wire about 1 5 cm 5 8 long and inserting it into the hole alongside the broken terminal wire.
To replace the fuse you must slide the access door open pop out the tiny fuse and replace with a new one.
A faulty shunt may sound like a catastrophic failure but you can often fix it with the lightkeeper pro.
Simply plug in the light strand and remove a bulb that s in or near the dark section.
Look for the lights that have a splash of red on the bulb near the bottom.
I have a string of led christmas lights with a problem about 1 2 of the lights are on but very dim the other second half is on normal.
Most brands of led christmas light incorporate a fuse in each strand.
These lights are key.
It can sometimes prove difficult to slide open the access door on a plug.
Two terminal wires should be visible.
Plug the string of christmas lights into the wall socket.
Led strings can fail when led leads corrode or wires break or fuses blow.
The next string which is plugged in after the problem string works normal.
Fixing any broken circuit involves locating the break then repairing it.
If half the string is out look for the dead bulb closet to the end.
By removing from socket.
If the entire string is out start with a bulb at the end of the string.