Question about Sigma EF-500 DG for TTL Flash

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EF 500 Sigma flash

The flash just stoped flashing, its only 16 months old and like new, I used it rarely.
Jim

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  • Anonymous Sep 21, 2008

    SIGMA EF 500 DG FOR TTL FLASH

  • frweatherby Oct 02, 2008

    Flash just won't fire - could it be some component has failed and that this could be replaced?

  • heycurt Dec 09, 2008

    I have three of these. The two that are backups and rarely used no longer power up. Contacts are clean and fresh batteries. The one that is routinely used works fine. Any help?

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I found the solution by doing the following, all solved:

The Sigma EF-500 flashes have very small chromed contacts for the batteries. Even though they may not look corroded, they may not power up or conduct enough power to fully cycle up. Use a polishing tip in a dremel or an ink eraser tip to clean the internal wire contacts and the flat contacts on the door. I used dielectric grease on a q-tip to apply a coat to all contacts and cleaned battery terminals to minimise future issues.

Posted on Dec 10, 2008

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Hello

Thank you for using FixYa for your problem

Always check the batteries first - make sure they have full charge (in the wrong way can discharge them) but if is it still giving the same fault, your flash is faulty.
It should be taken to an authorized repair centre for a repair estimate. Very few digital cameras have any user-serviceable parts.

Please rate our solutions and if you still have problems please call back for more ideas to help you

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A: For Sigma issue:

The Sigma EF-500 flashes have very small chromed contacts for the batteries. Even though they may not look corroded, they may not power up or conduct enough power to fully cycle up. Use a polishing tip in a dremel or an ink eraser tip to clean the internal wire contacts and the flat contacts on the door. I use dielectric grease on a q-tip to apply a coat to all contacts and cleaned battery terminals to minimise future issues.

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