1 shower head and 1 faucet have no pressure
I'm on a well and the control panel on the well went out. Had it repaired and all was fine. The repair guy asked me to test the water in the house. Turned on the faucet at 1 sink in my master bath. Worked great. Repair guy leaves and as I turned on the shower in the master bath, just a faint trickle of water came out. Turned on the same sink that had just worked fine, and the same thing happened, just a trickle. Called the repair guy back and he asked me to test another sink. I tested the other sink in the master bath and it worked fine. What could be causing the lack of pressure in the 2 appliances? I tried turning the water on in the other sinks in the house and then the 2 non-working faucets. I let them run for a few minutes to see if it would clear the line, but it didn't work. What else can I try? What could be the cause?