Now my nsf has gone again .. I cant see any water or damp.
Just wondered if anyone else has been having similar problems????
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Duncan wrote:Just a thought, but you are making sure you don't touch the glass of the replacement bulbs when you install them, aren't you?
Fingermarks cause hotspots.
Apologies if you already knew this.
Are the bulbs a well known make?
Also worth getting a multimeter to check the alternator isn't kicking out too much voltage.
Duncan wrote:Well, there's not many things that could cause it.
1. Too many volts at the bulb. Only possible if your alternator is faulty. If this were the case you'd be getting through all your bulbs at a vast rate, and your battery would have boiled dry by now.
2. Vibration. This would have to be a design issue, and all cars would do it. I suppose if the clip isn't in properly, it could have the same effect.
3. A high number of switch on / offs. Possible if there's a wiring problem as suggested.
4. Faulty batch of bulbs.
When the bulbs blow, what does the bulb look like? Is the glass black or silver inside? Can you see a break or missing part in the filament? Is the filament smooth, or coarse and crystalline?