Konka LCD TV LED32F2200 flower screen fault repair - android - Phones Developers

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Before the small holiday, I received the Kangjia machine. I didn't expect it to be a hard bone. There are examples in the forum. I also came to fly the line, lacking a knife.
Model: Konka LCD TV LED32F2200
Fault: flower screen (vertical line, horizontal line)
Suspected objects: logic board, screen line, screen maintenance:

1, the regular check logic board, screen line no visual defects, clean screen line gold finger is invalid.
2. Detect the reference voltage of the logic board, no abnormality.
3, dead horse as a living horse doctor, split screen. The test points of Y1 (COF: 8656M) were slightly scratched and the enemy was found. Two of the test points had no VGH and VOFF voltages. Online browsing, without too much reference data, can only compare and explore, determine the relationship between the two test points and the logic board, immediately fly from the logic board VGH and VOFF two lines. Power-on test, perfect solution.