LG LCD TV 32LH20R-CA does not power failure repair example - appliance repair - Huaqiang electronic network

MOS power IC full range
Photocoupler

The customer sent a 32-inch LG LCD TV and told it to become unpowered after the other ports were repaired.
It seems to be a bad bone! Let customers leave a call and other notices!
Disassemble and repair, the overcurrent fuse is not broken, there is no output of sub-power +5V!
May be the problem of the power board! Hurry up and find a board test machine, it is really a power board!
The sub-power IC adopts ICE3B0365J, and no obvious breakdown of other components is found on the board. The ICE3B0565 has a normal voltage output on the machine!
The cold machine will not be powered up until the next day. After replacing the C501, C505, and C503, the cold machine will still not be turned on. The only thing that can be heated behind the IC is the ZD502 (24V). It is really leaking when the measurement is removed. Just replace it!
ICE3B0365J.png

Wine Cooler

Wine Cooler

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