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Old 01-19-2011, 11:24 AM
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The Dead Receiver

Over the years I have had several techs call me trying to figure out a simple problem. They tell me the radio transmits fine. Has full power and audio out. But the receiver is dead as a door nail. No RX audio, no deflection of the S-meter. One tech brought 2 radios over for me to look at. Sure enough, both had dead receivers. After 5 minutes a piece, both radio's were working fine and the receivers was singing away. Both radios were Cobra units. One rig was used in a pick up by a deer hunter the other was used in a big rig. Both units had the same symptoms but different problems. one the speaker jack had cracked loose from the main board. The other had a cracked solder joint in the RX section.

Both units had non working S-meters. This is what I call the hibernating receiver.
Get you a known working S-meter from an old radio. Attach red and black wires with alligator clips. Then when testing a radio just clip the S-meter in. This may save you many hours of hair pulling.
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