VW Passat - battery drain

A friend has a 2001 2.0L petrol Passat with a problematic battery drain.
With the alternator connection removed from the battery, the doors
closed and locked (and the alarm set) there is a continuous 0.2A (200mA) drain from the battery.
He has removed all the fuses one by one and the drain remains at all time. i.e. none of the fuses removed stopped the drain. That either means that it is not on one of those fused circuits or there is a back feed through a second fuse.
Putting the fuses aside, my immediate thoughts were the radio (although he's certain that's through the fusebox), so it should be detected when the fuse was pulled or the other possible option is the alarm.
Could the alarm be taking more current than usual (dying or dead back up battery taking a high charge)? But, being an alarm there is no information on its circuits (or even location) in the manuals available to the public, so we don't know where to start!
Has anyone else experienced this problem? And can you give him/me some pointers before we blow a large amount of money at an auto electrician!
Failing that, can anybody recommend an auto electrician in the Swindon area?
Cheers
Peter
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Friend had a Citroen with similar,flattening the battery overnight-occasionally. On warranty so back to the main dealer on several occasions. Checked alternator-ok, and changed battery twice. I suspected the alternator was stopping at a position where there was a back feed causing the current drain, but not every time the engine stopped. He suggested this and they then changed the alternator, congratulating themselves they found the problem. DaveK.
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An alternator doesn't have an armature so if there was an intermittent fault it had nothing to do with where the alternator stopped.
John

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You must have a very unusual car alternator. Although why where it stopped would make a blind bit of difference also confuses me?

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Duncanwood wrote:

Thanks for the various suggestions. It looks like it may be beyond the home auto diy-er, so can anybody recommend an auto electrical specialist in the Swindon/North Wiltshire area?
Cheers
Peter
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There's a difference between an armature and a rotor.
John

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Yes. There is.

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Not bad for an armature!
--
Skipweasel
Never knowingly understood. (Ivor Cutler)
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Well I've never seen an alternator with an armature.
JOhn
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In a car alternator it's the staionary bit the rotor spins inside.
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On Tue, 03 Jan 2006 23:36:01 -0000, puffernutter

Try unlocking the alarm. Erwin will sell you th ereal electrical diagrams.
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You didn't say if the drain remains with the doors unlocked/ alarm off. If the current changes it would indicate alarm/locking fault. Had a faulty central locking module causing the same problem on a Honda recently, so it does happen.
JOhn

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