On 07/07/2018 17:37, Dave Plowman (News) wrote:
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.

https://www.power.com/sites/default/...top242-250.pdf