Mac Mini Late 2012 bank 2 RAM slot went bad randomly

I recently purchased a Late 2012 Mac Mini from ebay. It came with 4gb ram and no hard drive. I put in an SSD and put in 8gb ram (2x4gb). It booted fine and I installed catalina onto it unti I shut it off after about 2 hours of use and now whenever I turn it on it with a stick in bank 2 it gives me the three beeps. I've tried different RAM DIMM's but to no avail. the socket looks ok. I was careful during the drive install. Device booted fine proabably 2-3 times before this became an issue. Logic board failure? Any answers would be appreciated. In the meantime device works fine with 1x4gb stick in the top slot (I am writing this on the Mac Mini) but it would be nice to get my 8gb back. Thanks