Problems with Xenon. - Page 2

tvpcop · 6th August 2011, 15:19

You want D2S burners if you do buy some new ones

ChestersDad · 6th August 2011, 20:07

Quote:

Originally Posted by Simon.h

Well i was driving to work on Wednesday and bulb failure come on dash, i could see from the car infront (sitting at lights) that is was the n/s xenon.
Well got in the car to go home and both xenon working but then a pulled up behind the car infront i could see the n/s was not so bright and had a tint of blue.

Any ideas?

The 1st pic is o/s and the 2nd pic is the n/s
Attached Thumbnails

Don't know much about these but whenever I've encountered one side bright and the other less bright it's usually down to a loose or poor earth on the dim side.

Simon.h · 7th August 2011, 11:05

Well been looking at the Rave cd and the earth point for the n/s headlamp in connected to the battery, will check this but cant see it being the problem!

ChestersDad · 7th August 2011, 13:47

If you have very low resistance to earth (good) then the other thing is to check the power side contacts.
Any corroding/soiling, (ie) poor contact, would cause resistance and it doesn't take much to degrade a 12v system especially HP Xenons.

They're both working so it's not connectivity - have you tried swopping bulbs to see if fault follows?

Jezzer 1 · 8th August 2011, 13:55

Quote:

Originally Posted by Simon.h

Well i was driving to work on Wednesday and bulb failure come on dash, i could see from the car infront (sitting at lights) that is was the n/s xenon.
Well got in the car to go home and both xenon working but then a pulled up behind the car infront i could see the n/s was not so bright and had a tint of blue.

Any ideas?

The 1st pic is o/s and the 2nd pic is the n/s
Attached Thumbnails

Xenon lamps are discharge lamps, meaning they don't have a filament but rely on high voltage to strike an arc between two electrodes within the lamp. If the lamps strike, then the ignitors which generate the initial hv pulse are probably OK. Once struck, the ignitors then drop out of circuit.

Xenon lamps age, and as they do, the internal gas pressure increases. This makes them more difficult to strike, and also means the luminous efficiency of the lamp drops off. It may simply be that you have an older bulb near end-of-life in the one headlight, or that the lamp is 'leaking' which often leads to a bluish tinge to the output.

I would try replacing the lamp first - after ensuring that all the connections are clean and tight.

Hope this helps.

6th August 2011, 15:19	#11
tvpcop Loves to post MG ZT CDTI 135+ Join Date: Mar 2009 Location: Milton Keynes Posts: 434 Thanks: 8 Thanked 1 Time in 1 Post	You want D2S burners if you do buy some new ones __________________ MG ZT CDTI+ 135 Drivers Intel pack, spec: full heated leather, parking sensors, auto dip mirror, traffic master, xenons, harmon kardon system, kenwood mp3, bluetooth, refurbed gridspokes, Decat Longlife Stainless exhaust, 190 brake conversion, Synergy2 + Pierburg, intake mod, FK-452's, Jules gold resistor To-do, Leon splitter, have drivers seat re-upholstered to repair rip.............the list never ends!!! [SIGPIC][/SIGPIC]

7th August 2011, 11:05	#13
Simon.h This is my second home Previously owned- MG ZT V6 160 Y plate Lpg, MG ZT 190 2003 In Rare Celestial Factory Ordered Lpg MG Join Date: Mar 2010 Location: Calne Posts: 4,531 Thanks: 8 Thanked 116 Times in 108 Posts	Well been looking at the Rave cd and the earth point for the n/s headlamp in connected to the battery, will check this but cant see it being the problem! __________________ Previously owned- MG ZT V6 160 Y plate Lpg, MG ZT 190 2003 In Rare Celestial Factory Ordered Lpg MG ZT 190 2004 lpg

7th August 2011, 13:47	#14
ChestersDad Still 75less :-( 1988 Defender 90 Join Date: Jun 2011 Location: Carmarthenshire Posts: 531 Thanks: 15 Thanked 93 Times in 37 Posts	If you have very low resistance to earth (good) then the other thing is to check the power side contacts. Any corroding/soiling, (ie) poor contact, would cause resistance and it doesn't take much to degrade a 12v system especially HP Xenons. They're both working so it's not connectivity - have you tried swopping bulbs to see if fault follows?