found some old emails with stuff about the fix.
It had blown the protection VDR's, the inductor and the transformer was cooked.
The dodgy transformer was grey, the new improved is brown.
i ordered the bits from Cimple spares
2 x 0012 E 0038 ( 130V version) RV1 /RV2
1 x 0022 E 0036 Transformer ( brown housing ) TR1
1 x 0023 E 0089 533mH coil, L1.
also in an email from an AKG repair guy:
'Please note, the fuse rating on the power supply was later revised to
T200mA.'
think the schematics on the akg site.