A faulty TL494 PWM IC can lead to improper voltage or current regulation, resulting in the failure of MOSFET transistors. When the TL494 fails to properly control the PWM signal, the MOSFETs may experience excessive current or unstable voltage, causing them to overheat and eventually burn out. Additionally, a damaged TL494 may trigger a short circuit in the system, further accelerating MOSFET failure. This issue is commonly observed in electronic devices like SMPS (Switched Mode Power Supply) or