When a neon tube starts to flash, or it refuses to light, several causes are to be considered. Generally, just replace the tube itself and / or the choke, small component of a low price. On the other hand, if it is the ballast that is in question, it is better, often, to replace the lighting itself (except to recover one on an old device).
Replacement of fluorescent tube and choke
1. After having cut off the power of the circuit concerned, remove the protective grid from the tubes.
Undo the hooks holding the grid.
Be careful not to damage the grille which consists of aluminum slats which deform easily.
2. To replace the fluorescent tube, gently rotate it until the pins on each socket are released from their socket. When the tube is blackened at its ends, it must be changed.
3. Remove the lugs from the socket on one side and pull the tube lengthwise. Remove the tube.
4. Replace the fluorescent tube with a new one of the same power and same light temperature as the second tube of the lighting.
5. Rotate the choke a quarter of a turn and remove it.
6. Replace the choke with an identical model.
7. Refit the grille, being careful not to deform it. Replace the suspension hooks.
8. Check that the tubes are no longer flashing and light up.
Replacement of the ballast (deposited lighting)
1. If the tubes still do not light up, the ballast must be changed.
2. Remove lighting to work on workbench.
Dismantle the defective ballast, note very precisely the position of the various connections.
Arrange the new ballast on the tube support.
Attach the ballast to the Phillips screwdriver.
3. Comply with the power scheme marked on the ballast. Press the automatic connector with a flat screwdriver:
- connect the earth conductor (E),
- connect the phase conductor (L),
- connect the neutral conductor (N).
4. Respect the distribution diagram written on the ballast:
- connect the two connectors of one of the sockets (1 and 2),
- connect the other two connectors (3 and 4).
(photos / visuals: © DIY-Prod, except special mention)
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