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I have an old Sunpak 3075G Thyrisistor circuitry Flash that I used to use over 15 years ago, I recently got interested in Digital SLR photography and went to try it out the other day but I have a problem The flash refuses to fully charge up. Even with new batteries , it just continues to emit a high pitch hum usually associated with it recharging, but the ready light will not come on at all. When I try to push the mainual flash button I get no operation so I presume its not charging itself. I have a new Canon EOS 550D Digital camera and I was wanting to use this until I can afford a new Canon speedlight. Could the Capacitor be faulty. The flash not been used for at least 15 years now. I live in Sydney Austrlia , so I don't know if parts are still available.

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  • Cameras Master
  • 5,412 Answers

May I add a warning here - using an old film flash unit with digital cameras is not recommended, as the trigger voltage is way too high (over 350 volts as mentioned), whereas the digital usually requires 6-10 volts. Using the old flash could totally fry your camera.

Posted on Mar 20, 2017

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Posted on Jan 02, 2017

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Bogdan
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SOURCE: Flash Will Not Operate

Flash doesn't operate from various reasons. Try to reset your camera if you find in the instructions manual a procedure like that. If it doesn't work here are some possible reasons. The flash works because a power inverter will charge a capacitor at about 350 volts. These are required to make a small lightning inside the flash tube. If the capacitor is damaged it will not charge, and the flash woun't work. If the invertor is damaged, it woun't charge the capacitor, and without those 350 volts the lightning inside the flash tube woun't go on. If the components that links the the camera's internal processor to the inverter circuitry doesn't work because of some failure to those components, again the inverter woun't work. Any shortcircuit or open circuit or imperfect contact can result in this. Even if the camera's firmware was corrupted in some way it could fail to instruct the camera to charge the flash circuitry. As you can see there are many reasons for that but only a service center can make the correct diagnostic. It isn't adviceable to dissasemble de camera yourself and tamper with the invertor circuitry as you are exposing yourself to those 350V. You may get some nasty electric shocks or damage other components. Therefore, I think the best aproach to this problem is to have it diagnosticated and fixed by a specialised service facility.

Posted on Mar 14, 2007

  • 1 Answer

SOURCE: Battery will not charge

Yep. Same hear. Casio will replace with reciept - call 1300 728 606. Pitty I've lost mine!

Posted on Jan 02, 2008

camerawes
  • 36 Answers

SOURCE: problem with slr camera flash obstruction

The problem is in the flash pop up switch. It is probably jammed in or there is some kind of substance on it causing it to stick. You can find it by manually popping up your flash. You should then see a little black spring loaded post on the release button side of the flash. Check to see that it is not stuck in in any way. If so that is why you are getting error 5. To repair you can try a qtip an a little rubbing alcohol. Otherwise you will need a technician to do it.

Posted on Jun 10, 2008

  • 115 Answers

SOURCE: My Nikon D40 won't take pictures fast.

There is a buffer in your camera that processes your images for storage on your memory card. The larger the file size, the more the buffer is being used per image. That will slow down your image transfer.

Also, memory cards are not just about the size of the memory card. It's very about about transfer rate. Once the buffer is ready to send the image to the card, the card has to be able to accept the MB quickly. If your card has a transfer rate of less than 255, it's going to be slow, especially with larger images.

Posted on Sep 28, 2009

  • 43 Answers

SOURCE: MY DIGITAL CAMERA KEEPS SAYING

Remove the battery and push the reset switch for about 5 seconds. Reinsert the battery.

Posted on Jan 29, 2010

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