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I did clean most of the corrosion off of the battery terminals that I could and I still don't get anything. Edit: Recleaned the terminals and reflowed the solder on the terminals on the terminal boards and I tested at the terminals with batteries installed and unit powered on, and I'm still getting nothing, tested at terminals with batteries installed and unit powered on with voltmeter and I get 1.5 volts at each terminal on the back side of the terminals, but then when I test at where the wires from the terminals go on the main circuit board with the unit powered on I only get a 1/3 of a volt and when the unit is powered off and I test at the place where the battery terminals connect to the main board I get 1.5 volts (there should be 4.5 volts there because that's all 3 of the batteries combined flowing into those wires.) Do I perhaps have a bad battery or something? I bought a package of batteries brand new from the store and I would of thought that they were all good but then again I bought generic batteries so who knows. Last edited by Captainclock; 04-06-2016 at 03:35 PM. |
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jr |
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1)Unhook or unplug the battery box from the radio.
If soldered in one lead is fine. 2) measure volts. If 4.5 V the batteries & holder OK. If not then the problem is the holder or bats. 3) If the voltage drops a lot when you hook up the radio something is loading things down. Look at the output IC or transistors first. The radio may have crapped out then got tossed in a drawer & the bats leaked...... If you like working on small stuff ( I do !) get some DC output wall warts. They used to make them with a voltage switch ( 4.5 - 12 V ), multi connectors & polarity switch. ADD a pair of wires with alligator clips that are color coded & you can sub it in to any low current device without batteries involved. As for bats I only use duracells from a known source to avoid Chi-Com junk & counterfits. 73 Zeno |
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Audiokarma |
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