Are you sure that’s a story from Brockman, though? He was in charge at ABC during the run of “Joker,” he never had anything to do with that show.
Looking at the list of interviews at the Strong museum, I don't know who else would tell a story like that. Certainly not Edd Kalehoff or Peter Marshall. Maybe Ron Greenberg? I don't feel like searching through all of those long interviews to find out. Either way, the story doesn't hold water. The IATSE stage electricians wouldn't have let Jack Barry climb a ladder to futz with the readouts without making a stink. If you want to rig a game show you collude with the contestants to either find out what they know or flat out give them the answers as Enright used to do.
"Pilots" were shot of P+, Mindreaders and Blockbusters. In those days NBC budgeted for three game-show pilots per quarter. I believe those pilots were shot so they would appear on the books as pilots which never aired. It sounds like a mere formality but pilots were considered R&D and as such, the cost of doing a pilot had tax implications as the costs could be deducted as R&D expenses as any business would do. If they aired those shows they wouldn't count as pilots and hence no tax deduction. Otherwise we would have shot five pilots of P+ to fill out an entire week, which we did not do. Functionally they were like dress rehearsals but accounting-wise they were "pilots".
I saw an interview not long ago with Bill Anderson, and he said that Spellbinders was all but sold to NBC, but technical problems with the computers that ran the board caused it to not enter production. Does that jive with what you remember?
Another reason talent isn't necessarily a reliable source. The Spellbinders pilots were shot before I came to work for G-T, though I did fly to L.A. to interview with Ira Skutch. The Ferranti-Packard displays worked just fine for the pilots. Neither NBC nor G-T would scuttle a project costing six figures and let it go to waste because of a computer problem which was fixable. In 1978 they had experience with Ferranti-Packard displays thanks to FF. In the 1950's there were problems with the American Totalizator readouts which affected TPIR pilot but the show went to series anyway. There were also problems with Bill Cullen's mic cable getting stuck in the turntable.
The odd thing about Spellbinders is that they had a music package composed, arranged, performed and recorded for the pilots which didn't go to air. Goodson didn't even recycle it for Child's Play as he did with other music, so either Goodson or NBC took it up the shorts on music for Spellbinders. Contrary to what a certain Oracle of All Things Game Show says, the Child's Play theme was based on "London Bridge", not "Twinkle Twinkle".