![](https://lh3.googleusercontent.com/_-UA8BV99Des/TVg2xEvajsI/AAAAAAAACQ8/tYIdP0svNQM/s800/Defender%20pcb%20007.jpg)
Nah, that's the batteries holder !! Examine the PCB around it (both sides !!!) for any blue-greenish stuff....if it's there, it needs to get the "white vinegar" treatment !
Highly recommended to desolder the entire thing and get rid of it. Then install a battery hack (like the one I did for Ully).
And this, my good friend:
![](https://lh6.googleusercontent.com/_-UA8BV99Des/TVgUlw-aFXI/AAAAAAAACPg/Oscc-COfA-Y/s800/Dodgem%20003.jpg)
is a TV chassis !!!
![Grin ;D](http://www.dragonslairfans.com/smfor/Smileys/default/grin.gif)
I'm quite sure about this because of the two metal "boxes" on the left-side. Those contain the tuner part of the TV (the metal cover is for shielding off the circuits from any interference).
Nice old-fashioned hack there HAHA ! Only trouble is that the 2600 could be connected through the antenna input, and that's not going to work with an arcade game....(RGB output).....
That Defender had connector problems (see the soldering) very common on Williams games.