[Yaesu] FT-101EX Problem

[waltah at earthlink.net]

Well, I lost the message but I think I remember the question.

Unfortunately, because most of the circuitry in the FT-101 is 
shared between the tx and rx functions, even a simple problem that 
affects both, can be a chore to pin down to the level of 'replace this 
part.'

Probably the best approach is to find a friend with a working FT-
101E-series and interchange circuit boards until you get yours 
working.   Then -- assuming there's nothing obvious on the bad 
board -- find a replacement board.   They're a staple on EBay, 
although most are not guaranteed, so you might be exchanging 
one problem for another.  

Start your substitution program with the board that has the RF amp 
as it is a frequent source of problems of this type.  *Check board 
numbers* before doing an interchange; some of the boards 
changed during the life of this model and boards with different 
numbers may not be interchangable.   There's an excellent website 
(a Google search for 'Yaesu ft-101 web site' should find it) that has 
board/model/serial number info.  

Board extenders were available for these sets but where you'd find 
them I don't know.   And going that route requires considerable 
familarity with solid state troubleshooting technique.

Walt Hutchens
KJ4KV