AC board intermittent issue

My printer intermittently has an issue with bed heating, in addition it drops its connection to Bambu cloud. The latter is fixed by unplugging from wall. Wiki information indicates the AC board is probably the problem, I suspect unplugging to reconnect is also an AC board issue. Does anyone have experience with this issue? I can’t find AC board replacement in the Bambu store. That makes me think the cost is such that purchasing the new version is a better financial decision. Thoughts?

The AC board is like $10.

Thank you!!! I will order and replace it.