Look at this if it works for you, Troubleshooting: Check F601 (4 A); R611 (33 KΩ - 1/8 W); R613 (68 Ω - 1/8 W); R614 (680 Ω - 1/8 W); R615 (0.33 Ω - 2 W); R616 (0.27 Ω - 2 W); C622 (330 pF); D604, D605, D606 (K26 SFPL-52P), these diodes can be replaced by the UF4007, among others; D607 (1SS355) can be replaced by 1N4148; IC600 (STRG9656); D603 (PC123 / PC817)