The power indicator feebly on the immediately after put out. F5Rservice manual download site
 F5Rservice manual download site
From the failure phenomenon, the main power supply didn't work, or because of some reason it stopped working. First check the fuse tube, normal, T601 each secondary output of 0 v. Measuring IC601 1 foot is 302 v, normal. Measure the power supply voltage of 3 feet, yet reached 15 v start threshold. Check the starting resistance, normal, and 3 feet over the ground resistance is normal also, peripheral components is no exception. From the failure phenomenon, like IC601 follow-up after starting power supply has a problem. In line with the idea, check, T601 2 feet to IC601 3 feet between components, when detected R611 resistor, discovery has open circuit damage. The resistance is 3.3 Ω / 0.5 W, replacing the same resistance, troubleshooting. F5Rservice manual download site
 F5Rservice manual download site
 F5Rservice manual download site
The fault as part of the thick film integrated circuit is not normal subsequent power supply cannot work normally.F5Rservice manual download site