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Nothing is more disappointing than building a radio just to find that it refuses to catch any signal in the FM world. I have come to find that this can occur in the Elenco model when the capacitor, C-22, is either broken or disconnected. This guide should be adequate in showing you how to remove and replace the capacitor.
Neye ihtiyacın var
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Remove the battery and the antenna.
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Pre-heat the soldering iron.
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Place hot solder iron on thermal pad, capacitor lead, and the mound of solder until solder liquefies.
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Apply desoldering pump to remove the solder from the circuit board.
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Repeat the instructions to remove solder from the adjacent solder mound.
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Gently remove the capacitor by pulling the two leads out of the circuit board.
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Place the leads of the capacitor through designated holes of the circuit board.
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Place solder iron on the thermal pad and the lead.
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Once this is done wait a few seconds until both items heat up.
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Once they are heated, apply the solder to the other side so that the solder iron and the solder are not directly touching.
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Wait 3 to 5 seconds or until enough solder covers the whole pad and forms a nice mound.
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Remove the solder, leaving the solder iron on the pad for 2 to three seconds, then remove the solder iron.
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Repeat for the other lead.
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Plug the battery in and attach the antenna to test the radio.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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