Question about Vivitar 283 Flash
I have an old 283 that when it works it works like it did when new. However, for every 3 to 5 times it is flashed, either by the test button or by camera contact, it might set off the flash tube. I can hear the flash charging and when the flash goes off I can hear the spark, but most times nothing happens. I would assume that there may be a bad solder joint somewhere or loose contact. Any help is appreciated.
I had the same problem with my early Vivitar 283 flash. I discovered that the thyristor on the trigger board tested as an open circuit.
Trying to find a replacement for a 30 year old thyristor semi-conductor proved to be fruitless.
My solution was to purchase a broken, late model Japanese 283 flash off of ebay and transfer the trigger board to my early Japanese model. The late model thyristors could handle more heat.
Posted on Oct 27, 2007
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