Hi from France, Has anyone ever met this on an a8?

Hi from France,
Has anyone ever met this on an a8? It worked correctly for a few prints, then the dashboard displays 169 ° for the hotbed; So this one does not heat any more … I work with a cold plate and glue in stick, and I ordered a new mainboard. Perhaps this problem can be solved differently?

On mine I had to cut the connector to the heatplate and solder the wires directly on, after this it worked just fine.

?? il you cut the connector, how can the board read the real temp and hot the plate ?? have you a picture ?