Question about Sunpak 266D For Pentax/Olympus
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Posted on Jan 02, 2017
The probable cause of such behavior is a faulty quench capacitor. The part is specially manufactured to withstand rather high voltage (350 V) and large current peaks (300 A) - despite of its small dimensions - and often goes wrong. Replace it with a capacitor cannibalized from a cheap second-hand shoe-mount flash having the same feature (series thyristor circuitry) and as high guide number as available. Both Sunpak units are highly populated inside, only try to repair them if you have a certain skills in such a job. If any of these explanations is unfamiliar for you then leave the flash alone and take it to a repair shop - there is lethal voltage inside, even long after the unit has been switched off. Good luck! Laszlo (kalaci at index dot hu)
Posted on Jan 24, 2008
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