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More Ebay woe!! A different buyer has come back to me with the following message about some Naim 322 MM phono boards I sold, these worked fine in my 72 for years. Here's his message, can anybody tell what the issue might be?
'Your package arrived safely and well wrapped, and I installed the phono boards this evening.
There was no problem installing them but when I switched the amp on with volume set to zero and phono selected I could hear a loud, repeating clicking sound.
I raised the volume a fraction and the sound became very loud, like a repeated knocking.
Checked the terminals, and everything was connected as it should be. When I removed the phono boards and turned the amp back on, the sound was gone and everything was normal. Tried it again, switching the cards, but exactly the same clicking sound.
No music could be heard when connected to the turntable, just the clicking/banging.
I've attached photos of the cards as they were installed just now.'
Maybe he has a dodgy set and wants to send you those as 'returns'. Did you mark yours at all.
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In later 72s the second set of BNC inputs were configured as a line level - a couple of links had to be cut on the circuit board to make it back into a phono input.
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I can’t remember, but both inputs may have been wired in this way. The jumper wires are just by where the boards plug in.
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They are about 8mm long and on the top surface of the mother board. They just need to be snipped and bent out of the way.
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