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Hi IC is damaged for the Power supply adapter for HP printer 5280. Can you please guide me to identify the top marking of the IC. Name of the printer : HP 5280 Desk ject

Power adapter : F5S43-60002 22V 455mA Ghashyam

Power adapters are considered a ‘peripheral’ part. They are non-repairable accessories. Seriously doubt HP has anything beyond the O.E.M. documents. Original Equipment Manufacturer. I have had good luck at Electronics & Electrical Engineering Forum forum.allaboutcircuits.com.