Looking for an electronics technician to fix my Yamaha TSR-700 receiver. I have the blinking red light when trying to power on. I think it is in protect mode. Checked to see if there was a wire short, but everything looks clear, downloaded updated firmware on usb thumb drive but sadly that didn't fix the problem. I don't know anything about faulty power supply or capacitors. Please let me know, much mahalos 🤙🏾