Brian Gaff wrote

However as has been said check the rest of the components in the circuit.

I wouldn’t bother myself given how fiddly that is to do with SMPSs
given that the ones that are easy to check wont produce that symptom.

These things seldom self destruct without good reason like a short or some
kind of change to its input.

Sure, but its not that easy to check the stuff that can kill that thing.
It’s almost the entire active semis in the power supply and it isnt
that likely that a failure of whats downstream of it will kill it like
that or that easy to replace if it has either.

"Jeff" wrote in message
...


"Dave Plowman (News)" wrote in message
...
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?

Likely given the best price is so low.