Interfit 150 ex mk1 not cycling flash correctly

It’d help if the question made sense :thinking:
I think there’s some missing text and something isn’t firing.
 
Those Interfit heads are old and they were never good quality, don't be shocked if they're faulty.

Misfiring is often a sign that the flashtube is worn, try firing it on higher power, if it can recycle properly at higher power levels it's *probably* the tube.
 
I’m on an iPad, no keyboard here, lol.
Would you like to read through your opening post then and translate it to something we can understand and possibly help you with.
 
I guess it's something like it fires the first time but wont fire again untill he presses the test button on the unit?
Did it work with this camera setup before? Are you firing with a cable or some sort of trigger device?
It could be a lot of things, it's hard to tell with the missing text in your first post.
 
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