4.4V8 Alternator issues

After replacing coolant with fresh antifreeze mix, blasted Battery light on dash, coincidence??

Stripped down to get the blasted alternator removed from the engine block, blimey why o why did bmw/LR decide on a water cooled alternator for this beast I dont know

Anyway eventually managed to get the alternator out and handed over to a very nice man who has fixed starter motors, alternators in the past for me.
I collected repaired alternator and reinstalled to find to my horror the blasted light still on the dash and the volts dropping fast from the battery and eventually the air suspension, etc starting to shut down due to lack of volts

So I stripped it back out and after chatting with repairer he tells me the diodes and regulater have blown again!!! It must be my car!!
Question is, has my beast blown the reapired alternator?
I have checked with volt meter

Battery 12.4v
Terminal @ alternator same as battery
Multi plug on alternator with ignition off zero on both
Multi plug with ignition on 10v & 11 v

So surely nothing wrong with my set up, or am I missing something...
Checked all fuses all good


Just thought ill ask if any one else has had similar issues
Plan on trying 2nd repair attempt weekend

Cheers
Richard

Could be the wiring loom to alternator, have heard of problems with this from a Landrover support tech

What the wire from battery to alternator?
Or multi plug

Cheers

The alternator can blow if feeding an open circuit or a short circuit, but more likely it wasn't fixed properly in the first place.

Thanks dizzytim
Ive checked the main cable from battery all good is that what you meant??

Well 2nd attempt all looking good however 30 odd miles down the road and suddenly I spotted the dreaded battery light

Had to leave the Rangie at a mates house for now,

Im hearing that some repairers dont even bother with trying to repair this type of alternator for this very problem and a new one should be fitted...

Anyone have any thoughts??
Have carried out all the usual tests

I suppose ill have to fork out for a new one and hope for the best

Sounds like a new ones needed, not cheap I suspect

Seasons greetings everyone

Yup New one seems to be the answer, phew

So now its the question, whats in these alternators that cant be repaired, strange cos theres less in these bad boys to actually go wrong
Several people in the trade telling me the same, after repair always a come backs after a few weeks

Happy holidays all