As the title implies, I am a third generation hand me down owner of a Sunpak flash (AutoZoom 3000 Thyristor is all it says on it). I am fairly greren in the realm of flashes, but this one in particular, seems like it would do a decent job once I learn what all the dials and switches do... Is there a owners manual I cold down load, or could someone give me some hints as to what all the controls do? I know when my uncle and then my dad used this flash, it had a sort of calculator around the dial (which seems to affect how powerful the light is - the dial, that is). This panel has long since peeled off and fell away...the dial still works and lights up even! There is also a colour coded switch on the front that also seems to affect the strength of the discharge... The flash has given me some great results when I got it right - but also some "nuclear bomb test sight" looking photos when I didn't...its very hit and miss since I don't know how to operate it. I searched the web for owners amnuals but with no luck. Any help would be very much appreciated! Thanks in advance, Peter.