|
An EE friend of mine in college was rich enough to have Warner Qube in his apartment. (Late '70s.) The lure of the black box was too much, and he attempted to open it up to look around. The box was held together with a single fastener, top-to-bottom, right in the center. Looked like a rivet... but close inspection revealed it was very slightly oval, and responded to application of vicegrips to loosen. After he got it unthreaded, he pulled it out from the top. "Click". Oops. No workee anymore, either. I was invited to the activities at that time. Close inspection revealed about four layers of circuit boards stacked up on stand-offs, and buried down around layer 3 was a sliding tamper switch, that was released when the bolt was removed. But, when released, it completely cleared the hole down thru the boards. So, you couldn't tell it was there when looking from above. Had to do some digging, then 'cock' it, re-assemble, and when the bolt hit the bottom of the hole, that enabled the switch so that the next bolt removal would trigger it again. Pretty clever. I advised my friend not to play around with the box anymore. Since Qube was an interactive response system, they probably could monitor our progress on reassembly.
Chip
|
02-06-2013, 08:17 AM
Threaded Mode