2012-2-21 10:54Beijing LG TV after-sales service hotline http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3701288 technical communication. Inspection skills for switch powe......
2011-12-5 14:58Analysis and Repair: When the machine is working normally, the power indicator light is green, and after remote shutdown, the power indicator light turns red. ......
2011-11-20 22:0Hisense TV, the function and classification of Automatic Gain Control (AGC) circuit There are two main types of AGC circuits: one is the peak AGC circuit; the ......
2011-11-4 7:48TCL TV audio is normal, but the screen only displays black and white images. Article source: Beijing TCL TV repair hotline http://blog.tianya.cn/blogger/blog_m......
2011-10-22 20:9Solution: After re-welding, the fault was eliminated. LG TV, a horizontal bright line appears on the screen.
Analysis and Maintenance: It is estimated that th......
2011-9-29 17:6LG TV, after turning on, shows a blue screen with no image, no sound, normal operation of the remote control or unit keys, and the screen displays normal chara......
2011-9-18 15:0LG TV, after turning on, displays no picture, no sound, and no light, while a clicking sound is heard from inside the unit.
Analysis and Maintenance: It's e......
2011-9-13 21:21Beijing Sony TV Repair Center, released on September 9, 2011.
Solution: After replacing with a new 0.1F/25V capacitor, the fault was eliminated.
Analysis......
2011-9-4 15:23**Fault Cause Analysis:** The fault was caused by poor contact of the line synchronization adjustment potentiometer R626, which led to line asynchronization. T......
2011-9-1 20:56Fault symptoms: The TV turns on with a raster present but no image, no sound, and neither the remote control nor the panel buttons function properly.
Sharp TV......
2011-8-29 20:7**Samsung TV, a horizontal bright line appears on the raster. Sound is normal.**
**Analysis and Repair:** Since the sound is normal, the focus should be on c......
2011-8-17 21:23**LG TV, after a cold start, the screen shows retrace lines, which disappear after 10 minutes of operation.**
**Analysis and Inspection:** When the fault occu......
2011-8-14 20:57**LG TV, raster shows a horizontal bright line, but the audio is normal.**
**Analysis and Repair:** Preliminary diagnosis indicates an issue with the vertica......
2011-8-11 20:53LG TV Repair Case: After the TV is turned on, the indicator light is on but there is no raster on the screen.
Analysis and Maintenance: A static inspection f......
2011-8-2 17:18**LG TV Repair Case: After turning on the TV, there is no raster, no sound, and no image.**
**Analysis and Inspection:** First, measure the output voltage of ......
2011-7-30 17:20TCL After-sales Case: After turning on the 2969A TV, both the horizontal and vertical synchronization were out of sync.
Analysis and Inspection: Based on the......
2011-7-30 17:17After turning on the LG TV, there is no raster, no audio, and no image.
Analysis and Maintenance: It is estimated that the fault lies in the power circuit. T......