Thanks Robert for all the suggestions. I have followed through on probably all your suggestions and have taken the necessary care through all the steps.

As I indicated earlier, I put the old boards back and the speaker works fine, so the board certainly has a problem.

I will take some better pics and post it later.

Also, I am still on the lookout for v5.40 firmware please if anybody can assist. Thanks.

Meridian 568, 562 v2, DSP5500, 2X B&W PV1 & Velodyne Subs, Velodyne SMS1 Controller, Linn LP12/Ittok LVII/Hercules/Ortofon Cadenza/PS Audio phonostage, MiniDSP4X10, JRiver..