Can the fluorescent lamp of T5 be repaired if it is broken What is the principle and how to repair i

Fluorescent lamp, a total of three devices. Lamps, ballasts, brighteners.

See figure. Use the electric detector to measure the l point, if the electric detector is not lit, the live wire is not connected.

Use a tester to measure point A (ballast to lamp foot), if the tester does not light up, the ballast is broken.

Use the electric tester to measure point B, if the electric tester is not lit, the A and B filaments are broken, or the wiring of the lamp foot falls off.

Short circuit B, C (both ends of the initiator). If the filament is not lit, the d, c filament is broken, or the wiring of the lamp foot falls off; If it's on, the launcher is bad.

Use a voltage tester to measure the n point, if the voltage tester is on, the zero line is broken.

If the filament is broken, the lamp is broken.

The replacement of lamps, ballasts and brighteners must be of the same model.

Don't use the inductor ballast, change to an electronic one, and the wiring method can be connected according to the ballast prompts, but you have to buy a supplement of the same power: if you are not familiar with electronics, it is better to change it.

It depends on what is broken, so as to determine whether it can be repaired.

T5 fluorescent lamp, which generally consists of a lamp tube and a ballast.

First of all, it is necessary to determine the specific bad parts.

Secondly, under normal circumstances, as long as the lamp is not damaged, and there is no blackening at both ends, the lamp is good, if it is not lit, the ballast must be broken.

Third, if the ballast is broken, then the ballast can be removed and the problem can be detected. Generally speaking, the most bad ballast is the MOS tube, which can be tested with a multimeter.

Fourth, if the MOS tube is good, then check it one by one, starting from the AC input, and test the voltage with a multimeter.

Fifth, the main test points: the output of the rectifier bridge, the IC power supply pin, the gate pin of the IC drive output to the MOS, the drain pin of the MOS tube, the output terminal of the transformer, the voltage of the diode at the output end after rectification, etc.

If it breaks, it can be repaired.

Maintenance steps: 1: Remove the lamp.

2: Disassemble the plastic parts at both ends, take out the circuit board, 3: see if it is the first problem, whether the circuit board is blown black, and then test the components with a multimeter, my maintenance is mainly to see if the transistor is broken, and then see if the resistance is broken, replace the bad one, and try to see if it is bright.

The circuit board inside is the ballast, but it is not encapsulated!

You're going to overhaul the ballast!

What is written t5t6 is a round lamp, I don't know if you are a lamp at home, I can only give you advice according to my understanding:

1. If it is a round lamp at home, it should be an ordinary round lamp, which is sold in the supermarket.

2. As for how to take it off, you can take the round lamp in one hand and connect the circular lamp line in the other hand after turning off the power.

3. If you can't change the lamp, you can buy the same rectifier and install it.

Hope it helps.