Okay my holga flash was broken too....the batteries were working just fine cus when i turned it on, the little back light came on and the whining sound happened, but then click...no flash! so i took the back off and made a small repair and it worked!
so this is how to fix it (if its the same problem...i.e. everything electrical is working but the actual flash):
use a small screwdriver to remove the two small screws inside the camera (take out the frame and they are on the bottom and top). the front will pop off and you should be able to see the wiring.
where i circled in red was the problem. that curved metal piece at the bottom was too straight and was not making contact with the shutter (the top little metal prod sticking outta the circle) when i clicked it. so just bend it forward to how it looks in the picture...then do a practice click to make sure it makes contact. you can even try it with the batteries in, but be careful!! its electricity!
hope this helps!!
Same problem with mine. i think maybe a soldering iron and the flash setup from a disposible camera should work, but havent tried it yet. :-I
Same problem with me. i took mines apart and it looks like everythings fine. im guessing i blew the capasitor or something. seems like an easy fix with some parts from radio shack though.
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