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In search of schematics: SANWA VTVM SV-506

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KC Chin

New Member
Newbie in this forum.
Seeking help from gurus and experts advice, and where i can find the schematics.
I am trying to fix the vtvm.
DC and Ohm measurement is fine. AC is way out. Replacing the 6AL5 and 12AU7 didnt help. AC cal pot was already max'ed.

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