Send your letters to The Editor, ET, Michael Faraday House, Six Hills Way, Stevenage, Herts SGI 2AY, UK, or to engtechletters@theiet.org. We reserve the right to edit letters and to use submissions in any other format. Barry Thorpe asks about the poor reliability of LED TVs (Letters, Aug/Sept 2018). I repair these on a daily basis and can confirm that the LED backlights are the least reliable part of any modern TV. I believe that the root cause is that the LEDs run at too high a temperature. They usually fail open-circuit or the narrow PCB tracks burn out where the LEDs are soldered on.
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机译：将您的信件寄给The Editor， E&T， Michael Faraday House， Six Hills Way， Stevenage， Herts SGI 2AY， UK或 engtechletters@theiet.org。我们保留编辑信件和使用任何其他格式提交内容的权利。巴里·索普（Barry Thorpe）询问了LED电视的可靠性差的问题（Letters，2018年8月/9月）。我每天都会修理这些，并且可以确认 LED 背光是任何现代电视中最不可靠的部分。我认为根本原因是 LED 在太高的温度下运行。它们通常在开路时失效，或者在焊接 LED 的地方狭窄的 PCB 走线烧坏。
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