A customer has standalone Viking VGBQ3002 BBQ unit. This unit has 3 burners inside, 2 tubes and 1 U-shape burner. The one with U-shape had no gas flow. The problem was the defective gas valve. I removed top grades, heat distributor plates and front panel to have access to all internal parts. I shut off the gas and replaced the gas valve. I put all components together and did some testing with bbq unit.
Another happy customer!