CA-888 universal window control module super display LED LCD TV
power supply module
Product Description:
Model: CA- 888
size : 19.5*13.5mm
Uses: to solve the 15-21-inch LCD monitor power supply maintenance
problems LCD power board damage a large proportion. One of the
power to drive the chip, high-power power switch,sampling resistor
damage is the most common, because of these component
models,variety,often because there is no same spare parts, and can
not be repaired.Should be the majority of customer needs to develop
a friend of the general-purpose LCD power supply module.
The module has: wiring is simple, easy to install, save time,
improve the success rate of maintenance and so on.Encountered
themaintenance problems of friends may wish to consider the
development of this under a universal power supply module.
The pin definition
foot yellow line: DRAIN, power control side, then the
original high-power MOS power supply D-pole.Generally the middle of
the power switch tube feet
feet black line or powder line: GND, module ground 300v, then the
negative capacitor, the same line can be.Directly connected to a
large filter capacitor negative
feet red line: VCC, the module power supply side, then the feedback
winding terminal rectifier capacitor after the positive,continuous
power supply, the voltage between 12-18V.
feet white line: FB, voltage feedback, then optocoupler 4 feet,
please check the optocoupler 3 feet heat, not heat,then put the
optocoupler short to the hot ground, while the 4-pin peripheral
circuit disconnected.
feet green line: start start pin, then +300 v capacitor positive
Use:
Remove the original power supply chip on the board (usually 8
feet), and the switch (mos tube)
Check the 300v capacitor, as well as the capacitance of the
load side of the package there is no drum, a problem on the first
replacement
Check the load side there is no short circuit, ad board, high
voltage board
Connect the module to the corresponding line, and carefully
check that there is no wrong, if wrong can cause the module burst
Installed in the original location of the radiator, pay
attention to insulation, not short-circuit
Power, measuring voltage is not the output, there is no
output, then check the cause