In my kitchen there are 3 adjacent electric outlets that have not been working for a few months. Next to them is a GFCI outlet and that works. I checked the circuit breaker and all GFCIs to see any of them tripped - they all seem to be fine. I opened all non working outlets and also the GFCI working outlet to see if any of them have a loose connection or burnt wire. I could not find any. All the non-working outlets are on the same circuit - I can see the wiring being terminated in one of the non-working outlet Anything else I can do, before I can call the electrician?