My Inon flash gun has developed a fault - it does not react to the flash strength dial when its in manual mode. It does flash, but weakly.
The only setting when it will flash at full power is on auto.
Does anyone have any suggestions on what might be causing this?. It is an old gun so it's out of warranty, and I accept that i may need to "open it up", but I'd like to have an idea what I'm looking to fix inside.