[Bazzer]

OK I have been quite for some while, I had to try and source the chip that sits between the two MOSFETS, it is labelled 3A3 and it is a tiny little 6 legged job.

The MOSFETS (2 off for each lane) that sit with the 3A3's (1 off for each lane)  are easy to purchase, it is the 3A3 that is the problem.

Eventually found some 3A3's from a very dubious source but had little option but to try them, hey presto they worked.

I have a small stock of the 3A3's, although I would say that anyone changing them over needs to be super proficient at replacing SMD devices, my son can swap these things over like most of us swap 13A wall plugs.

So I have two working Sport World towers, one which I bought and worked 100% and it then failed in one slot, and another that was sold to me as 100% working but was duff on one lane straight out of the box.

The first tower just needed MOSFET's changing the second one did not respond to just the MOSFET's and had 3A3's changed and then MOSFET's again as a precaution.

I would say that a high percentage of Sport World failures were centred around these two chips.