1978 Seamaster Mariner II, can I use this circuit?

Good afternoon everybody, I inherited my Omega passion from my father, who owns a 1974 Speedsonic bought new, and I'm addressing at you because I'm still very very unaware of how things work, my ignorance is big but my passion is bigger.
I've recently acquired a very beautiful 1978 Seamaster Mariner II that's currently not working, put a new battery in it but nothing happens. I think that if I change the whole circuit it should work again properly. Am I right?
Being the vìcaliber 1320 I think I should use the 9150 Omega spare spart, like this: http://www.ebay.com/itm/NOS-Omega-Part-No-9150-for-Calibre-1320-Electronic-Module-/182245199466
Here attached you'll find a couple of photos of my acual watch.
Please give me your advice.
Thank you very much in advance.
Vincenzo

That is sound advice. Otherwise, the trial and error approach could take much longer and cost much more money than taking it to an experienced watchmaker.

Thank you so much, I'm here just to learn and share my passion!

Yes, I think this is the only way, I hope to find the right watchmaker, but I also think that it shouldn't be an extremely difficult watch, isn't it?

I have the same issue and question: Mariner II not working and the recommended replacement part is (probably) Omega 1320-9150.
Can any good watchmaker figure out the problem, or does ot take special (Omega Quartz Ninja) skills?