[Milsurplus] [Fwd: [Boatanchors] solder whiskers grow on "non lead" solder]

[KD7JYK DM09]

It could have been lead and lead does oxidize black.  I have a hallicrafters 
TV and opened the rectifier shield a few months ago, it too is covered in 
black dust, but in this case, it is dust that migrated in due to static and 
cooked.  There is also evidence of tracking in the dust.  You will find that 
black dust around the rectifiers and flybacks on most old TVs.

Kurt

----- Original Message ----- 
From: <hwhall at compuserve.com>

picture tube HV rectifier. I assumed it was lead. But all over the inside of 
it were dark colored whiskers - none on the outside. I assumed at the time 
that something radiating from the rectifier was responsible for the crystal 
growth.