Re:The biggest CRT ever made: Sony's PVM-4300
by keitmo on Monday December 22, 2025 @12:46PM
(#46356500)
> Touching the circuit board on the back of the CRT tube by mistake trying to troubleshoot image issues, “fortunately” it was a “low” voltage as it was a B&W monitor….
My father ran his own TV repair shop for many years. When I was a teen he helped me make a Tesla coil out of a simple oscillator and the flyback transformer from a scrapped TV. It would make a spark 2 or 3 inches long and could illuminate a florescent light from several feet away. It definitely produced higher voltage than normally exists in a TV, but not orders of magnitude more. The high voltage circuits in CRTs are dangerous as hell.
My father ran his own TV repair shop for many years. When I was a teen he helped me make a Tesla coil out of a simple oscillator and the flyback transformer from a scrapped TV. It would make a spark 2 or 3 inches long and could illuminate a florescent light from several feet away. It definitely produced higher voltage than normally exists in a TV, but not orders of magnitude more. The high voltage circuits in CRTs are dangerous as hell.