Tom, Leo
I just checked the 3x2 diodes (multimeter in diode mode).
I expect 0,6V when measuring forward bias, 0L when in reverse bias.
CR1660 : both the original diode and the newer one solder above are good. The new one is connected to the board on the two leads.
CR1656 : both are good AND both are just one side connected
CR1652 : both are good and the original one has been disconnected on one side.
I'm going to resolder one of the CR1656 diodes and see what happens.
Question though : are the diodes really good ? (if so, what was the point of soldering a new set of diodes on top).
Jose