What causes the red light on both ends
There are two kinds of red light on both ends of the fluorescent tube: 1, if it is the use of long tube, gradually from both ends of black, red in the end, there is a gradual process, is basically a lamp aging, filament will burn out the precursor, exchange tubes can troubleshooting; The lamp tube USES all the time normal, occurrence afore-mentioned phenomenon suddenly, that most is the rectifier is caused by failure, change rectifier can.
Several reasons, the inductance ballast may be neon bulb breakdown short circuit, the shunt capacitance in the starter or not the capacitance may be a bubble in the bimetallic strip jump is not opened, and at the ends of the electronic ballast and the bulb is a resonant capacitance breakdown short circuit, the above cases, red middle not light on both ends of the tube, and is a situation in the middle will be bright, but is not stable, and not the brightest state, is more obvious black on both ends of the lamp aging, conduction resistance big cause filament at start preheating condition at both ends and a red glow, especially the inductance ballast lamp aging at low temperature state is more obvious when starting, the electronic ballast will have original power rectifier filter circuit damage (400 v / 4.7 ~ 10 uf or diode IN4007), also happen when the result in low voltage power supply, replace the corresponding parts.
There are two reasons for this: 1. The internal gas shortage causes!
On both ends of the fluorescent lamp with a filament, when using the filament with a long time because of the heat for a long time makes its internal metal tungsten evaporates and attached to the fluorescent lamp on the wall of darkened, and so you turn on the light because the light on the wall that had led to that piece of dark red.
