Hi and welcome to the site, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.
Initially, is the Sansui completely / electrically dead?
And are you then considering a DIY (do-it-yourself) repair approach? If yes, do you have access to and familiar with a multi-meter and even a soldering iron?
I understand and no prob.
If repairs considered, there would be several fuses inside that can cause the Sansui to be electrically / completely dead.
On the otherhand, the Sansui G-6700 may be worth 'a lot' to the right people.
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