Hi @Kristin
You can try to write at [email protected] I like this product. Miso changed the model made improvement over the years.

You can buy in on-line shops like VIVID LEAK SENTINEL V6 XD - Plongimage.com or order directly over mail and pay with Wise . I ordered a new one to have a backup.... just in case then I breaked a cable (old model) I fixed the problem but I prefer to have a backup

Normally I 'll receive it in the next days. I can publish some pictures when I got it, if you want

26 minutes ago, CaolIla said:

Hi @Kristin
You can try to write at [email protected] I like this product. Miso changed the model made improvement over the years.

You can buy in on-line shops like VIVID LEAK SENTINEL V6 XD - Plongimage.com or order directly over mail and pay with Wise . I ordered a new one to have a backup.... just in case then I breaked a cable (old model) I fixed the problem but I prefer to have a backup

Normally I 'll receive it in the next days. I can publish some pictures when I got it, if you want

thank you so much!! i will definitely use this info. photos would be great - thank you!

I recall you said that you had a steady red light which is the battery. If you lose the vacuum it's a blinking red light and it should go through yellow first . You can test this by pulling a vacuum and then immediately releasing it and observing what the lights do. It's always possible the valve has had it, if it uses a soft seat for example, that will eventually wear out. But to be sure about this see if the circuit does as described when releasing the vacuum as you would do if you wanted to open the housing.

Another way to test if to see if you can fit your friends valve to see if it comes good with that. BTW the tool you showed is for the new model vacuum valve, you model without the press button uses a wrench with a little pin that fits in one of the holes on the valve. scroll down to the bottom of this link, above the pic of the pump:

Nauticam

Nauticam Vacuum Check and Leak Detection System

Nauticam is pleased to announce an exceptionally comprehensive vacuum system that allows the underwater photographer to confirm watertight integrity before entering the water. This system provides add

If it doesn't do this as described, you have a different problem. A fresh battery not fixing it does not necessarily it's not a battery issue either, You might have bad battery contacts or the wire or switch has some issues with extra resistance or it could be a problem with the pressure sensor. A new valve/alarm system should certainly get you back in working order if that's the case.

5 hours ago, Kristin said:

@Luko - that sounds like the one I have! I'll try to find a no name one. Do you remember where you got yours?

I can't get any light change now after doing what I could to it and reinstalling.

@Davide DB sorry, I thought I had answered that! Yes, there was never a problem removing the back. The problem is getting a vacuum seal. I can hear air escaping the valve sometimes even after taking it out and reinstalling.

I'm wondering if somehow I am not putting it back together again properly...

Did you try to clean it?

Inside there'a a mushroom valve and a spring. Maybe you have some debris or salt deposit on the membrane.

7 hours ago, Kristin said:

I'll try to find a no name one. Do you remember where you got yours?

French based UW online store , that would be difficult for you to order from Oz. (Wondering whether the owner is not part of this board btw)

I guess you can find the same model from Asian located online stores.

https://eocean.eu/en/accueil/116-686-focus-ring-for-12-50-olympus-and-nauticam-housing.html#/51-housing-nauticam_m14

19 minutes ago, Luko said:

French based UW online store , that would be difficult for you to order from Oz. (Wondering whether the owner is not part of this board btw)

I guess you can find the same model from Asian located online stores.

https://eocean.eu/en/accueil/116-686-focus-ring-for-12-50-olympus-and-nauticam-housing.html#/51-housing-nauticam_m14

Thank you I didn't know this site...

Thank you, Everyone! Really appreciate the suggestions and information.

At this stage, I've done all I can do with it so looks like I'll be needing to replace it. There's definitely something wrong in there 🙃

Also talked with Reef and they've explained how to use it without the vacuum until the new part arrives, so there are options.