Bosch SHU43C05UC/14 Blown Control Module...Again

Approximately a year an a half ago I had the control module to my Bosch replaced under the recall. Recently the module has gone kaput again and I am pretty certain it is the heater relay circuit that is the culprit. I tried to get another freebie out of Bosch but no dice and it probably is well known by now that the replacement module is no longer available. When I took a look at the circuit board there is no clear evidence of a bad solder joint as I have seen in many online pics and vids. So…I am at the point where I am wondering if anyone knows of a retailer who may still have the part and/or another compatible Bosch control module as that is likely the only way I am going to get this fixed. Thanks.