dkshema rrMaster Location: Cedar Rapids, IA
My Posts This: Topic Forum | You'll need one of these, from Mouser Electronics. It's the battery with solder leads attached.
http://www.mouser.com/Search/Produc...L5QyBmkfg%3d%3d
Mouser is a good place to buy electronic parts from, as is DigiKey
www.digikey.com
DigiKey doesn't have the battery in stock, Mouser does.
When you remove the back of the 662, you'll see this:

That's the RF deck on top. Unscrew the antenna and pull it out, remove the four screws holding the board in place, and move it off to the left. What looks like a connector on the top left corner, isn't. As a matter of fact, all of those white plastic wire termination blocks look like connectors, but aren't. That makes the job more difficult than it should be.
When you remove the RF deck, you'll see this -- the processor assembly. It's held in by four screws, two black self-tappers at the top, and two brass machine screws near the bottom end.

If you gently lift the processor assembly up, you can see the battery -- its that round, flat object on the back side of the board, just visible in this picture.

The next picture is a better shot of the battery. It's that big round, flat, yellow object in the shot below:

To get better access to the battery, you'll need to remove (unsolder) a wire from the top-left corner of the processor assembly. It's the wire circled in yellow, below:

Remember where that wire came from, you'll need to put it back when you're finished.
The battery tabs that need to be unsoldered are circled in yellow in the picture below:

Remove the battery, solder the new one in place, reassemble, and remember to put that black wire back in place on the processor assembly.
I don't know if you need to recalibrate anything, I'd guess you're on your own for that issue.
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* Making the World a Better Place -- One Helicopter at a time! *
Dave |