Vestel (Turkey), they licence brands or manufacture low end TV’s for manufacturers, even Sony! Toshiba is one of the brands they manufacture for Toshiba in europe. Vestel have a reputation for low quality crap.
The 50″ made by?
As your within your 30 days of ownership or of a fault developing, I would stronly advice you to reject the TV under the consumer rights act. I would cont Argos head office to do so and follow up with a letter sent recorded delivery. Use a templte rejection letter or I can give you one.
Have you purchased a new tv yet, as can recommend to budget?