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volume problem

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F1nut:
Inspect the contact strips at the end of the cable for wear/damage. The contact strip, 5th from the right looks suspect.

EmperorNorton:
Thanks for all the tips.   I spray some canned air into the ribbon slot and used a bit of De-Oxit.  Did not change issue.   Still played perfectly when the ribbon is seated at an angle. 

After playing it at moderate volume, on the back deck, for several continuous hours, both Saturday and Sunday, though pairs of bookshelf size Polks,  RCA Optimus Pro 77s and a pair of homemade speakers,  I am going to keep it where it is and swap it out when I find another cheapie. 


MacGeek:
I suspect a short when the ribbon is fully inserted.  Consider checking the contacts in the the female end of the connection might reveal a loose contact that moves when the ribbon is inserted, or some that causes the ribbon to move out of alignment when inserted.

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