Samsung Dryer Not Heating and Won't Turn Off: Control Board Replaced in Los Altos
A Samsung DV50F9A7GVP dryer in Los Altos that wouldn't heat and wouldn't shut off. The main control board was failing; a new board went in and the vent was checked.
Repair at a glance
| City | Los Altos, CA |
|---|---|
| Appliance | Gas dryer |
| Category | Major Brands |
| Brand & model | Samsung DV50F9A7GVP/A2 dryer |
| Repair date | |
| Customer complaint | The Samsung dryer stopped heating and kept running even after it was turned off. A week earlier, unplugging it had reset it for a while. |
| Diagnosis | The main control board was not working properly and kept the dryer running and the heat off. |
| Repair cost | $423 (parts and labor) |
| Warranty | 6 months on parts and labor |
| Outcome | Repaired |
What I found
A dryer that keeps running when switched off, and comes back after being unplugged, usually points to the board holding its relays closed. I opened the top and checked the main control board and its outputs.
The board was not controlling the heat and motor circuits properly, so it needed replacing.
The repair
I moved the wiring connectors one by one from the old board to the new one, so every plug went back in its own place, and mounted the board in the control housing.
With the cabinet open I also looked over the motor, blower and heat duct, and checked the vent hose behind the dryer.
Testing
The dryer now heats, stops when the cycle ends and turns off from the button. The total was $423 with a 6-month warranty on parts and labor.
Part replaced: dryer electronic control board (DC92-01310A).
Photos from this repair
The Samsung dryer before the repair. 
The old and new control boards. 
Relays on the control board. 
Motor, blower and duct inside the cabinet. 
The vent hose behind the dryer.
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