4 WIRE 5-24V UNIVERSAL POWER MODULE

Type: Adjustable universal power module
Input: 300V
Lead wire: 4
Voltage: 5-24V
Power: up to 180W
Size: 42mm*30mm*15mm
Type: Adjustable universal power module
Input: 300V
Lead wire: 4
Voltage: 5-24V

This module is suitable for the replacement of the output power below 180W, the output voltage is in the range of 5-24V after the single-ended flyback switching power supply is damaged. It is suitable for the maintenance of the main and auxiliary power supply of the 14??-60?? LCD TV. It can also be used for the maintenance of power supplies such as monitors, set-top boxes, satellite receivers and DVDs. As long as the switching transformer is repaired on the power supply, the input and output rectification and filtering circuits are normal, and the product can be used for replacement maintenance. After repairing, the original machine level can be achieved, and the maintenance work can be greatly simplified.

Remove the original switch tube and damaged components, keep the switching transformer, absorption circuit and input and output rectifier filter circuit, and check whether it is intact, there are problems to be repaired.
Fix the module to the heat exchanger of the original switch tube and ensure that the power tube on the module is in close contact with the heat sink for heat dissipation.
The red line on the module is connected to the D-pole pad of the original switch tube, and the black line is connected to the negative pole of the 300V filter capacitor (hot ground). The yellow line and the blue line are connected to the output main voltage 5-24 filter capacitors at the positive and negative ends, the yellow line is connected to the positive pole, and the blue line is connected to the negative pole (cold ground).
Disconnect the load, install a 3-5W220? resistor on both the positive and negative ends of the main voltage output to make a dummy load (the low voltage is not easy to start when this resistor is not applied), and power on. Normally, the main voltage output is about 4.5V. Adjust the adjustable resistor on the module clockwise, the voltage will gradually increase. According to the requirements of the repaired model, the main voltage will be adjusted to the appropriate value, and the other output voltages will be automatically matched. . After adjusting the voltage, the power is turned off, the dummy load is removed, the original load is turned on, and the machine is tested again.

common problem

Boot does not start. At this time, check whether 300V is normal. If it is normal, check whether the components connected to the output winding of the switch transformer are short-circuit damaged. Check whether the output rectifier is broken. If the fault cannot be eliminated after the inspection, it may be a short circuit inside the switch transformer. You can try it instead.

NOTE: read the manual inside for additional info

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