Is there a difference?
If it is a Vivitar Auto 283 then you may be Just Lucky and have a less than 10v trigger circuit.
Have a look here. http://dpanswers.com/roztr/flash_show.php?id=103&pid=VI283
Anyway try to ger it tested to be sure. Perhaps your camera was just resistent to a bit higer tension but you could cook a new one...
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