SMD aluminum electrolytic capacitor
Chip ceramic capacitor
Patch Murata capacitor
Factory direct 0805 blue light patch led
SMD LED

I haven't seen the forum for a long time. It was only today that the icon of the forum was changed. I thought I was looking for the wrong place.
Ok, don't talk nonsense.
Konka LCD TV LED4656LAW motherboard number is . LED current sharing chip is iw7018-00
IMG_20151120_162119.jpg
I found a circuit diagram in Baidu. Check the circuit diagram found: iw7018-00's 10 pin, 11 pin, 12 pin voltage are: 5V, 3.3V, 12V.
Power on the board and found that the 11th pin is 0V. Then use the resistance file to measure and find that 11 feet are shorted to ground.
]SS%HQ_WR729]NHB]EP9BDW change.jpg
11 feet to the ground have two chip capacitors. The bit numbers are C703 and C704. The principle of maintenance from easy to difficult. Disassemble the C704 capacitor. Found that it is shorted IMG_20151120_152448 change.jpgIMG_20151120_152552.jpg
Then measure 11 feet to the ground and find that there will be no short circuit. It is estimated that this capacitor is broken.
In my rural area, LCD is still not popular. The cultivation is less natural. There is no chip capacitor. I used a 50V4.7UF electrolytic capacitor instead. I don't know if I can be durable.
IMG_20151120_153153.jpg
power ups. Measuring 11 feet has a voltage of 3.3V. Then connect all the lines. The test machine is normal.
IMG_20151120_154638.jpg
This is the end. The overhaul is completed.
15091917267155.pdf

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