When the monitor fuse is damaged, do not replace the fuse easily, you need to further identify the cause of the fuse damage before making a decision.
Judgment criteria.
(1) The surface of the glass tube is clear and transparent, and only one internal fuse is blown.
Cause of failure: accidental utility circuit with surge voltage appears or frequent switching, or the working environment temperature is too low and accidentally blown.
Solution: Use the same model direct replacement.
Note: The monitor uses the same delay insurance as the color TV instead of ordinary fuse, generally 14, 15, 17 can be used 3.15A, part of 17 to use 5A fuse.
For the use of ceramic package fuse, it is best to use the same type of substitute to avoid frequent replacement of fuses.
(2) The surface of the glass tube has yellow and black spatter-like dirt, but can see the shape of the internal fuse fuse.
Cause of failure: circuit tube breakdown, power PWM control integrated block breakdown caused by.
(3) glass tube surface has a slight crack, it is not easy to see the internal condition.
Failure causes: 220V rectifier diode a can two breakdown, capacitor breakdown caused by short circuit.
(4) glass tube is seriously fried.
Cause of failure: Mostly due to direct short circuit of power supply.
Solution: Check the circuit before rectification, demagnetization coil.
Description: This failure is less common.
(5) damage to the power cord
Cause of failure: accidental force pulling or collision, the power cord internal disconnection.
Solution: Use the replacement method to troubleshoot and replace the power cord.
(6) power cord and monitor plug loose
Cause of failure: the power cord plug specifications are not standard, and the display power socket does not fit tightly, resulting in poor contact, will produce the phenomenon of sometimes bright and sometimes not, the surface and the display can not add power similar.
