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Discussion Starter · #1 ·
I have an old Sony 9ES preamp that I have been using. Somehow, I have lost sound on two channels (2,3). I have noticed that on the Sony display (for channels 2 and 3) there is a word "unlock" that is displayed in red. I don't know how it got there and it seems to be preventing the audio on those channels from working. Any Sony 9ES preamp owners out there know how to turn it off?

Thanks in Advance.

Tim
 
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