Hi , I`m JackPerhaps I can help you with this problem
It does not matter the brand , those are VHS-C to VHS adapter unit and they are universal .
You said you cleaned the contacts and replaced the batteries but does the small motor within the adapter load the tape now , does it do anything ?
In any case from your description I would not try to use the one you have as you may end up with one of your cassette stuck in it so the best thing really would be a new adapter .
You can get one at the link >> HERE << for $30 , just click on it
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