: Should measure approximately 310V DC (for 220V AC input).
When replacing filter capacitors, always match the capacitance value (
In some variants, pin 8 (VREF) may be absent or renamed. Always verify with the marking on the IC.
If you are looking for specific replacement component numbers for a particular board revision or need to cross-reference component labels with an online catalog, let me know:
Discolored or charred printed circuit board (PCB) substrate around high-temperature components. Bulging or leaking electrolytic capacitors.
Test the input ceramic fuse for continuity. If it is blown, do not replace it immediately. A blown fuse indicates a direct short downstream.