I'm Really Worried I Have Upset My...
Family & Relationships2 mins ago
No best answer has yet been selected by rabbits. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Well assuming that most of the above ideas (some of which will not work anyway) will give a more than obvious sign that the unit has been deliberately damaged you might be asking for a lot of hassle if it is a legal matter.
The ways which would probably work and not be obvious will require you to open the unit and do something to the circuit board, if this is not within your capabilities then forget it.
Hmmm... Unless you have access to a three phase power supply, then you might accidentally connect it to two phases at 400vac and then claim ''it just went bang mate''!!
Magnet on screen no good, it can be degaussed to clear.
Swopping live aand earth no good, for two reasons.1 chassis usually not grounded so no earth effect, and 2 most modern tv sets only have 2 wires.
If however you were to spill some Coke (liquid sort) that contains acid and sugar, and once it starts to eat its way across circuit board it wont stop.