In article
,
doug wrote:

hello all, does anyone know if my icom 7400 txvr., bought new in jan.
2004, circuit boards were
assembled using `lead free` solder,or leaded solder,and can leaded
solder be used to repair or
replace parts even if original assembly was `lead free` The sevice
manual doesn`t mention this,
and tried Googling for info. with no success !

Doug-

Circuit boards that contain surface-mount components most likely were
made with lead-free solder. Lead can combine with silver used to
connect to the components. The resulting amalgam can cause bad
electrical connections.

If the circuit boards had nothing but components with wire leads, then
it probably wouldn't matter. I doubt this is the case, however.

Fred
K4DII