But it was tested on my mobile device also with the same issue: #40 in history of this thread

Well that sucks... I guess you'll need to EZ Robot again contact us

I think that I'll send back everything for any testing process, because I did everything that I could and yes it sucks

This is not being said to diminish your frustration, which I highly sympathize with. It is more to help others who may see this thread and think there is a larger problem.

Every electronic product (or even non electronic product) that is shipped will have some out-of-box failures regardless of how good the quality control and manufacturing are. I was in a market research group from Verizon for 10 years, where they sent us phones (smart and dumb) every few months just before or just after they were released to get our feedback. This was not Beta testing, but production ready devices that they hoped we would talk about and review online, as well as provide feedback to them on a private forum to help them make decisions for future devices.

There were 50 active members. Every time we got a new phone, at least one member would have one that wouldn't work at all, and one or two others would experience serious hardware or software issues that the rest of us didn't see (this doesn't include the fact that we always found bugs that should never have made it past Beta, but that is a different conversation). So, basically, we were seeing a 6% failure rate on phones from the top manufacturers in the world, and we were assured by our contacts at Verizon, that this was not unusual.

I used to work for a company that makes hardware and software for the Contact Center industry. We developed a new T1 card, and our Alpha and Beta testing went great, but when we went to manufacturing, we were seeing a >20% failure rate in fixture testing (where we test the card just before boxing it for shipping to customers). Of the 80% that passed, we still had about a 5% first 6 month failure rate at customers, so we had to redesign the card to make it easier to manufacture correctly.

The fact that EZ-B has shipped thousands of EZ-B's v4's and we have only heard reports here of 3 or 4 that needed to be returned, I think is phenomenal. If I didn't already know the level of quality and support from EZ-Robotics from having some V3's, I would have waited for the second manufacturing run before ordering to let them work out the kinks, but I am very happy to have pre-ordered given the low likelihood that I will experience a problem when my Roli arrives.

Alan

Thanks a lot for cheering me up and I understand the complicated process of manufacturing, but It Is sad that I'cant realy diagnose the failure because debug log in this case is useless and I don't have another option to test the hardware more exactly. I should replace all (ez-b and camera) during the first try. Now I really don't know if I should wait for Jeremie's (from techical support) opinion or send it back to ez-robot - it's realy confusing me

Hey @Fisha,

Definitely Contact Us again and reference this thread and we will get you a replacement EZ-B and we'll have you send one of your cameras and the EZ-B in question back to us.

I would like to say that the real problem was in faulty ez-b - the new one is working excellent with all cameras that I've got for testing. Thank you guys for help and of course ezrobot crew for replacing ez-b