ZMax Follow Up to my previous
Follow UP
I feel like I'm beating this thing to death; but people are still out there buying them so I want to put this information up for all to find.
Like I said in my previous
Follow-Up I had set my ZMax to the side uncertain if I should give it away or dissect it. Well the decision was made for me when I picked it up to respond to
this post in the New Members Forum.
When I picked it up to see if a drip shield would fit in the well I noticed a rattle inside. Curious, I took off the bottom cap and sitting in it was this little metal ring.
I immediately recognized it as the positive pin that should be attached to the circuit board.
It's hard to make out in the photo but; you can see on the larger board in the middle of the tube there is a little tab jutting out that this ring sits around. There is a semi circle of solder just above where this ring broke off. You can see some discoloration on the ring in the first picture, that is where it was soldered to the board.
The ZMax has been sitting flat without a battery in it since I posted my last follow up. So, I can't imagine what force acted upon the pin to break it off other than a bad solder joint to begin with. The ring is perfectly smooth other than the bit of solder still on it. They could have scored it a little to make a better connection. The AW ICR batteries I initially used were a little tight when screwing on the bottom cap. That may have helped the connection come loose. I stopped using those after about a week though and switched to AW IMRs which fit without undue force and everything was fine until the unit started behaving oddly. If the damage occurred early on due to the tight fit of the first batteries it might explain some of the strangeness that I experienced.
So, Let's take it apart, shall we?

The top cap is press fit on and was easy enough to take off. I put an old atty on it to help me get a hold of it.

To get the board to slide up you'll have to break the glue holding the screen cover to the LED display inside. It shouldn't take much to do it. In mine it was already broken. Which is why my screen cover had moved a couple times. For the other end I used a small flat head from a precision screwdriver set. Once the screen cover is out of the way the board will slide out easily. Be careful you don't loose the button because when the board is out there's nothing to hold it in place. I had to chase it under the desk.

There are two wires going to the head of the unit. White is soldered to the center pin (positive) on the 510 Connection. Black is going to the body of the head. This is the only place that the board makes a ground connection.
[URL=http://s1060.photobucket.com/albums/t460/SolemnPenguin/ZMax%20Testing/?action=view¤t=IMG_1256_zpsf0eef39b.jpg]
A Shot of the larger board with the LED display and button.

The smaller board. Looks like the power regulator circuit
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Here's a better picture of the support tab and broken solder connection and what it should look like when I solder it back on.
I don't know where my soldering equipment wound up after the last time I moved. So, I'll have to look around my warehouse at work and see if I can find a soldering iron to get the job done. I'll update once I get it working again.