15. fusion splicer black & white screen on X/Y view; Solution: replace red light

When you activate the blend splicer and figure out there is 1 white display and 1 black display on x/y sight. Preliminary court is red light trouble.
If the red light is the trouble, this video clip is just to evaluate.
by placing a magnet on the “hall sensing unit” location, and examine the 2 traffic signals under wind cover gets on or off.
Change red light video clip is a little hard.
There can be numerous factor for black & white display, 16th video clip is an additional video clip of very same problem with various factor.
case: 1 trouble can include a number of factors, and what we do is go by easy ones and validate from easy one to challenging one.