GE Fridge/freezer not cooling - Intermittent problem

Hello, all.
I just joined the forum and could use some help troubleshooting a problem.
I have a GE fridge/freezer Model #GTH22SHSARSS. Freezer on the top.
Bought it new 2004.

The problem is the fridge/freezer stopped cooling several times over the past couple months.
I cycle power (at the breaker) and it starts working again for a couple weeks.
On the last event, I pulled the fridge away from the wall and vacuumed/dusted off the condenser.

After turning power back on, the fridge/freezer started worked again, but only for about 3-4 days.
I cycled power (at breaker) again this afternoon, and once again it appears to be cooling at this moment.

I know I first need to check if the compressor is
running when it fails to cool. But I do know for sure it was blowing warm air in both freezer and fridge compartments.

Is there anything else I should check when it fails again?

edit: This sounds like the common mother board failure. Can someone confirm?

Thanks in advance.

jasper