Time to retire them and replace with leds.
Fluorescent light dim then bright.
Someone suggested it might be the ballast.
Both bulbs are very dim but evenly lit along their length and both the same as each other.
With the passage of time the fluorescent lamps start but glows dimly may flicker slightly but constantly and may exhibit rings of bright and dim light that appear to move up and down the length of the lamp.
When a light starts dim and then gets brighter the cause may be an open neutral wire.
A good way to check that your ballast is the culprit is to turn on a voltage detector and hold it next to the wires supplying power to the ballast.
It s not the tubes as i ve replaced those and nothing changed.
This morning they were completely dark at first but are now very dim again.
You ll find replacement starters at any hardware store.
If fluorescent lamps start to burn out or flicker then it is time to replace them and always replace both lamps as a pair for a longer lasting ballast.
It feels creepy and can also cause a terrible headache.
The starter is located on the lamp frame there are typically two starters.
I tried reading.
When you turn on the.
Since it started doing this one time it lit fully for about five or ten minutes.
Dim fluorescent light bulbs and bad lighting ballast fluorescent light bulbs that are allowed to burn out in the socket can actually cause the ballast to burn out and need replacing.
There s nothing worse than having to be in a room with a flickering fluorescent light.
I have a fluorescent light fixture that uses two 40 watt 4 long tubes.
One clue that your ballast is the reason for a non working fluorescent light is the light bulbs struggle to turn on.
It has recently started acting strange.
You ve already gotten your money s worth buying into them so do it again with led replacements in the same form fact.
Consider the steps to fix the problem.
Most people choose fluorescent lights in order to save money.
The utility company does repairs outside your house but if the problem is in the panel you need an electrician.
When first turned on it works fine for a minute or two then one of the tubes becomes dim and the other becomes dim and flashing.
Our kitchen light which uses two 4 foot fluorescent light bulbs is very dim.
This is one of the concerning problems with the fluorescent lights.
Older fluorescent light fixtures that flicker or only light up part way may just need a new starter which is a less expensive repair than a bulb.
The disconnect may be in the panel or it may be between the panel and the line transformer.
Is this a sign the ballast needs to be replaced.