"Aha," he said, touching the top of one capacitor. It was slightly bulged—a classic sign of age-related failure. When capacitors fail, they cannot smooth the signal, leading to high "ripple," which causes voltage regulators to fail or produce unstable power, crashing the system.
Where thermal balance on FETs and line noise reduction are critical. 4. Safety and Troubleshooting a20112 power supply schematic