NB: I have added three pics at the end of this post. (28/11/2015)
You may remember that I recently asked you a simple question: ‘Why is there any “soldering” at the bottom of the “1” shaped pad of PT/35(b)?’
Several readers have suggested an explanation but quite frankly none works. (I think we all agree on that.)
Again, look at the “Lead/Tin soldering” deposited at the bottom of the two following pictures.
And now look at how the relay is mounted on the main board of the MST-13 Timer! No soldering at the bottom of the pad is needed. (This pic comes from a control sample made after the identification of MEBO.)
Please, REMEMBER that there is no evidence that this “soldering” was present on the early pictures of PT/35(b)…
Here are two pics of K1 (the TOGO timer found in 1986)
There is clearly no reason for the presence of any soldering at the bottom of the 1 shaped pad as nothing is to be attached there…
And yet the presence of soldering is very obvious. (Although it does not extend all the way to the right side of the pad.)
I can only think of one explanation. And it is not an “innocent” one. But, as always, I will let you come to your own conclusions for now.