显像管使用一段时期后,电视图像变得暗淡模糊,像是一张保存多年的旧照片,看上去很费劲。说明具备发射电子功能的阴极已经中毒,应该更换新显像管。更换时,应注意下列三点: 一、选择相同型号的管子从贴在显像管玻璃外壳的商标纸上可查得失效显像管的型号和制造厂。更换时,一定要选择相同型号的管子,才能正常使用。如果管子型号不同,管子的光电参数、外形尺寸、管子与电视机外壳的配合尺寸很可能 After a period of use of the picture tube, the television image becomes dim and obscure, looking like an old photo that has been stored for many years and looks very laborious. Explain that the cathode with the electron emission function has been poisoned and the new picture tube should be replaced. Replacement, should pay attention to the following three points: First, choose the same type of pipe From the glass attached to the CRT glass case can be found on the failure of CRT models and manufacturers. When changing, be sure to choose the same type of pipe, in order to normal use. If the tube model is different, the optical parameters of the tube, dimensions, tube and TV shell with the size of the most likely