电视遥控器中的晶体是产生时基振荡的关键元件,常用频率有455KH、480KC、500KC等。其故障多是开路、漏电或碎裂,这时将不能产生时基振荡。漏电、碎裂只能换新,但开路(内部接触不良)往往是可以修复的。有时手头没有或买不到该器件时可考虑代换。本文就其辨别、修理、代换问题分别叙述如下。 TV remote control crystal oscillator is the key to produce time-base components, commonly used frequency 455KH, 480KC, 500KC and so on. Most of its failure is open circuit, leakage or fragmentation, then time-base oscillation will not be generated. Leakage, fragmentation can only be new, but open (poor internal contact) is often repairable. Replacement may sometimes be considered when the device is unavailable or unavailable at hand. This article on its identification, repair, substitution problems are described below.