Add spaces: Itcan'tgetanymoresimpletousejustasadumbTVspeaker.

Answer: It can't get any more simple to use just as a dumb TV speaker.

Add spaces: PhetchaburiislocatedatthenorthernendoftheMalayPeninsula,withtheGulfofThailandtotheEastandtheTanaosimountainrangeformingtheboundarytoMyanmar.Exceptthesebordermountainsmostoftheprovinceisaflatplainarea.

Answer: Phetchaburi is located at the northern end of the Malay Peninsula, with the Gulf of Thailand to the East and the Tanaosi mountain range forming the boundary to Myanmar. Except these border mountains most of the province is a flat plain area.

Add spaces: secondhandbutinverygoodcondition.

Answer:
second hand but in very good condition.