capacitors

Hi, anyone know how to determine the polarity of old Elna caps? They are orange electrolitics but have no indication of the negative side. Thanks Stuart

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Hello all, i have a problem with an amplifier and hope someone can help me with some advise. http://dymas.ii.uam.es/~jga/nad216thx/DSC02678.JPG The amp has two problems. First when you turn it on the relay didnt clicks and the protection led keeps on. Ok, i know most nads amplifiers fail that...