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GE 7-4305C bulb replacement

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  • Reaper
    Vintage Member
    • Aug 2017
    • 49

    #1

    GE 7-4305C bulb replacement

    I need to replace the neon indicator light in a GE 7-4305C. I just got some NE-2H bulbs from eBay with a single 100k ohm resistor on one side. I assume I have to cut off the old bulb and resistors and use the new one. The old bulb has smaller resistors on both sides. This one has a larger resistor on one side. How do you know which side to put the resistor on? Does it even matter with AC current? It technically doesn't have positive and negative sides.
  • Mackey
    Administrator
    • Feb 2014
    • 3617
    • United States [US]

    #2
    You got it right. It doesn't matter. When I did this I just removed the old stuff and put in the new. It should work fine. Let us know how it goes!
    ~ Mackey Site Administrator
    If you have any questions/comments Contact Me
    If you're not a member, you should consider joining!

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    • Reaper
      Vintage Member
      • Aug 2017
      • 49

      #3
      OK, thanks! I should receive the radio soon. I ordered the bulbs knowing I would need them, and they arrived first. Just one more question. When I cut off the old bulb and resistors, will I need to join a piece of wire in there to make it long enough? If so, what kind should I use? I can get lamp cord at the local hardware store rated for 120V. Would that be too thick?

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      • Mackey
        Administrator
        • Feb 2014
        • 3617
        • United States [US]

        #4
        You probably won't need any wire. But no. Don't use lamp cord. Much too large. Just any decent what they call "hook up wire" of about 20-24 gauge. That's not a very thick wire. I know you might think that the wire has to carry a lot of current, but it doesn't. You'll see when you open up the clock. I'd wait until you get the clock before you get the wire.
        ~ Mackey Site Administrator
        If you have any questions/comments Contact Me
        If you're not a member, you should consider joining!

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        • Reaper
          Vintage Member
          • Aug 2017
          • 49

          #5
          OK. I watched a video you made fixing one of these clocks, I think you used 24 gauge solid copper wire. I have something similar I scrapped from an old fluorescent ballast. If I need some I'll use that. I'll let you know what happens when I get the clock!

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          • Mackey
            Administrator
            • Feb 2014
            • 3617
            • United States [US]

            #6
            I use stranded wire, but solid would work. Interested to hear how it goes.
            ~ Mackey Site Administrator
            If you have any questions/comments Contact Me
            If you're not a member, you should consider joining!

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