Unless a bit of kit contains custom chips or ROMs any competent electronics engineer should be able to fix it....sometimes, even these can be repaired
There are companies that specialise in repairing "brains" out of Fridges, Washing Machines, Dryers, TVs etc......often replacing substandard components with more robust alternatives.
If nobody is told it's been repaired, who's to know? a working bit of kit is better than nothing at all.