If customs gets their hands on it surely import duty/tax will apply.
If you order anything (expensive) online make sure it’s trackable, aka use courier option rather than cheap airmail. And never ever declare as telecommunications equipment or transmitter/receiver/transceiver as there are strict rules on the import of such.
Give the risk or damage, tax and hassle during warranty case perhaps it’s better to purchase it during a holiday.
If the equipment is portable no tax shall apply in most countries.
And I think portable TVs are not considered portable actually if you know what I mean …