Alternator - is voltage regulator replaceable?

[Dohnut]

Noticing flickering interior lights and having issues with battery not charging properly. Had a quick test and alternator and battery both checked out OK. Flickering only noticable with the engine running and worse when it's been sitting for a while so basically cold starts. Since the lights are flickering and not dimmed it must be AC voltage otherwise it would just be dimmed with DC.

So, points towards the alternator. Is there a voltage regulator on these that can be replaced? If yes then I might still go for the complete alternator depending on the price of the alternator.

Thanks in advance
-MM

[vwcabriolet1971]

Voltage reg. can normally be replaced for about £25 on DIY basis