Ender 5 plus silent board issue

Hey everyone I've been running the silent mainboard for a few months without any problems but all of a sudden the bed stopped heating and I got an error so I changed the thermistor with no luck and so I switched back to the original board but before I switched I noticed the bed temp for the bed was reading 121/60c even though the bed is cold and obviously iv never attempted to go above 60c. Anyway I switched back to the original board and all is well. Do you think the silent board is fried or can be saved somehow? The board its self has no visible burn marks ect.