Changhong color TV CHD2995 HD TV does not boot fault repair diagram - appliance repair - Huaqiang

SMD aluminum electrolytic capacitor

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

100V, 250mA, surface mount, high speed switching diode

Filter 18.432M

Changhong color TV CHD2995 machine failure phenomenon is not boot!
Because there is no drawing for home repair, you can check whether the fuse of the switching power supply is intact or not, and whether the resistance of the 300V filter capacitor is too small to judge whether the switching power supply has a serious short circuit. if there is not! Next, you should check if there is a short circuit in the line pipe! If there is, you can disconnect the C tube and measure the tube! At this time, if the short circuit of the tube is eliminated, the problem of short circuit between the primary coil and the secondary coil of the high voltage package is very large! This machine checks the primary coil 123 and the secondary coil 4679 to a short circuit, and the high voltage package is damaged and does not start up! BSC75M3 dual focus high voltage package:

The maintenance animation is as follows: (The text indicates that the speed is slow! Please wait patiently for the next picture!)