A few days ago, I took over a Changhong LT37710X LCD TV from 2011. The fault phenomenon is black screen, there is sound, the flashlight flashes the screen with faint images, and the remote control is normal. Judging from the phenomenon is the backlight problem, high voltage board or lamp tube problem. Because some Changhong LCDs have been repaired before, many black screen problems are high voltage transformer high voltage windings blown. This should be a common problem. After disassembling, go straight to the subject and measure the high voltage transformer high voltage winding. Copper Tube Terminals Without Checking Hole Our company specializes in the production and sales of all kinds of terminals, copper terminals, nose wire ears, cold pressed terminals, copper joints, but also according to customer requirements for customization and production, our raw materials are produced and sold by ourselves, we have their own raw materials processing plant, high purity T2 copper, quality and quantity, come to me to order it! Copper Tube Terminals Without Checking Hole,Cable Lugs Insulating Crimp Terminal,Cable Connector Tinned Copper Ring Terminal,Tubular Cable Lugs Crimp Terminal Taixing Longyi Terminals Co.,Ltd. , https://www.lycopperterminals.com
Remove the high-voltage transformer, and surely the high-voltage winding is fired, as shown below:
Checked the Internet, the price of this type of transformer is really not cheap, look at the bad is not serious, simply connected to the calculation, the high-voltage winding is retracted a ring, and the terminal is welded firmly, in order to avoid re-ignition on the 704 silica gel.
After the 704 glue has dried up, the installation is all normal, the troubleshooting, no technical content, do not spray!