is it a known problem that the driver on the HF PA board (Power FET) for the FT-847 rigs develop a leg separation problem inside it self under the ceramic lid ? seems this animal i have likes the fail after the tranny gets hot, it simply just drops out. using a plastic tool and applying very little pressure will put it back in service again! you can even hear a very little arc talking place also! and yes i have checked and double checked for solder joints. there is no problem there how ever! i can say that i really don't like the way the transistor was put in! , there is no relief at all for thermo movement and this part gets hot by nature... they could have at least put a slight bend in the legs before soldering and only soldered what was needed instead of the whole leg which gives it no relief. this is a MRF5015, any known experience with these?
- posted
18 years ago
-- Real Programmers Do things like this. http://webpages.charter.net/jamie_5