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Transistor Radio Time Machine

Step 8Connect Sound Board

Connect Sound Board
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  • Trasistor Radio Time Machine 4 (10).JPG
  • Trasistor Radio Time Machine 4 (17).JPG
Locate the sound board and ribbon cable. Solder the individual leads of the ribbon cable to the sound board. You may find the following color coding useful for later reference:

Red: V6+ (Positive voltage in)
Black: Ground
Brown: Speaker pin 1
White: Speaker pin 2
Blue: Switch 1, terminal 1
Green: Switch 1, Terminal 2
Yellow: Switch 2, Terminal 1
Orange: Switch 2, Terminal 2

With the relocation of the switches adjacent to the thumb wheel, you can start to see that this you are merely creating jumpers for the switches themselves.

Cover the bottom of the circuit boards with electrical tape and trim the sides.
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Author:Mister Jellyfish