Samsung FTQ387LWGX Service Manual page 43

4. Troubleshooting
4-2 Electrical Malfunction
Ok
Ok
* Replace Main PCB.
END
13.5V (Red) 13.5V (Red)
8V (Yellow) 8V (Yellow)
(Input 120) (Input 120)
No
43
No color voltage
Primary white 120V
(input)
Secondary 1 red 13.5V
Secondary 2 yellow 8V
*Thermal Fuse with built-in Low voltage
Transformer will be open if resistance is
more than M .
Ye s
* Replace Low Voltage Transformer
END
resistance
75 ~ 80
1.5 ~ 2.5
0.8V ~ 1.5