Yes be careful I purchased a Beogram and was told it needed a new 'power distributor' (this was a real diagnoses by a technician!) and while justifying my final bid amount I thought, there is no way the transformer could be the part that has blown, surely?
Well guess what
What really gets me is that I had held on to a spare transformer for about 15 years which followed me from house to house, along with an original platter motor. I had planned to use them for a future project. I have since searched the house in vein but alas, it seems I have thrown them away, perhaps not more than a year or two ago [:'(]
So my advice, buy as if for parts like the glass panels and mirrored panels, so that anything else that works or is usable is a bonus!