Quote Originally Posted by blacksambo View Post
New resistor is in place works fine. Thanks for the repair offer but needed it done quick. (By the way, the resistors say do not repair on them. Maybe they know something we don't know?)
I might be talking through my arfes here, but I think the repair is to re-solder contacts that have separated.
Being a resistor, they create heat, and the original unit could be assembled with a special solder that gives a thermal overload protection.
This is achieved by using a special alloy solder that melts at a known temperature.
If you do the repair with standard solder, you loose the thermal overload protection.
We use this method to provide automatic closing of fire dampers in ships.
It is called a "thermal fuse" or "fusable link".

of course, I might be totally wrong in this case.
Perhaps Deermagnet, or one of the electronic gurus will speak up.

PK