Gys 161 Repair

I had to tear down a Gysmi because one of the screwed crimped connections that hold the two PCBs has been unsticked with the time and the heat probably (3 years use). I had to replace it with a piece of thick wire instead.

Unwelding thePower PCD :
Caution  : Unwell the DIN rack BEFORE unscrewing the heat dissipator. It would destroy the tracks otherwise
Lift first the plastic holder
Fold each pin while melting the solder so you can reach the second rack then. Do the same operation on this second one.
Pull then carefully the pins out from the Power PCB while consequently heating the solder to avoid any track lifting.
Much easier to mount it back.
Before mounting back, if you had to pull out some, spread back the cooling silicon Electrolube SC2003 found in Farnell Elements, because there are smd component that dont have a heat dissipator.

Cdt.