[HAM] hammond (cougar?) 7122

[ak]

hi.

i found a hammond, it's type-sign says '7122', produced in atwerp, belgium. the
leslie runs fine, also the rhythm-section, but no other tones, except from a
roaring noise by the speakers.

i can't find any sources, technical manuals, etc. for this model.

any help or suggestions?

thanks in advance.

alexander