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Fig. 7-20, Page 155. Shouldn't the upper left lead of the lower right tact switch go to ground? Shouldn't the upper left lead of the the lower middle tact switch be connected to the end of the resistor above it?

I got the system powered up and the audio/video cables connected, but just get "blinking" on the screen -- no game video or audio. What is the RF plug on the back? Do I need to connect that to something? Any other tips to get it playing would be appreciated.
Thanks.

I got an old NES 8 bit with no power adapter, so I just got a Radio Shack universal power adapter to try to test it out. Is the center pin on the back of the NES system positive or negative?
Thanks.

Installing LED's in PSONE -- the leads on the LED's are not insulated? Should they be? Can I dip them in liquid electrical tape or?

Figure 7-9, Page 141. I didn't see this "power switch" on the parts list. Is there a Radio Shack part number or specs?

Thanks.