guk Posted December 24, 2020 Share Posted December 24, 2020 Have two units both with dead capacitors, On opening up I see two blue items both the same size. I recognise they are capacitors 500v 400uf But also one large red? what is this? thanks g Link to comment Share on other sites More sharing options...
rodeo_joe1 Posted December 26, 2020 Share Posted December 26, 2020 Wow! Looks like somebody found an old lunch-box and decided to build a flash power supply in it. That big red thing is either a partly-sliced salami left in the lunch box, or another capacitor. Seriously, it'll be another capacitor, of about twice the value of the blue ones. The capacitors are split in value to make power level switching easier. Link to comment Share on other sites More sharing options...
guk Posted December 26, 2020 Author Share Posted December 26, 2020 Cheers RJ1 from the UK Link to comment Share on other sites More sharing options...
BeBu Lamar Posted December 28, 2020 Share Posted December 28, 2020 It makes sense to have 3 capacitors as the power output can be selected as 50, 100 and 200WS. For 50WS only one of the blue capacitor is used. For 100WS perhaps both the blue ones or just the one. For 200WS all of them are used. Link to comment Share on other sites More sharing options...
rodeo_joe1 Posted December 30, 2020 Share Posted December 30, 2020 When even a cheap YN560 speedlight has an energy of 75 watt-seconds these days, a big tin box that only delivers 200 w-s looks a bit under powered. Link to comment Share on other sites More sharing options...
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