It's an elderly FreeView tuner. Have a few used only for radio. One has failed. The TOP 244Y chip has blown apart. Think it is basically just the on/off switch on the DC side. Nothing else looks damaged. Worth a punt just replacing it?
That's a mains voltage SM chip, there's a data sheet with suggested circuits. If it's blown itself apart it would seem a good idea to check the mains reservoir cap along with both the diodes hanging off the Drain pin.
Seems like it's the switching PSU chip:
Depends how much you like debugging SMPSUs (given it may have blown something else as well).
Theo
Likely given the best price is so low.
I hate switch mode devices with a passion. Brian
However as has been said check the rest of the components in the circuit. These things seldom self destruct without good reason like a short or some kind of change to its input. Brian
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