As someone else suggested, there should be a protective solder "blob"
somewhere on the pickup pc board, cable, or in the case of some later Sony
models I've seen, the solder blob which must be cleared is on the little
board on the side of the mech where the cables take off to the main unit.
Visible from the TOP side. In fact, it should be unsoldered AFTER plugged
into the circuit.

Mark Z.

ok there is short soldering required in one place. The only place I
can see that has a blob is actually on the ribbon cable as it comes
off of laser. The blob only covers 1 line. Is that the problem? I
looked on the old one and the place where the blob was is flat, but u
can tell there was one there. So, do I need to find a short solder guy
at this point? lol. Never done it, so...
I got a friend in electronics, so I am going to give him a call at
this point, but please post anything else plus thank you for getting
me in the right direction. I will post with an update as well.

jd