Doing my first repair on a cheap radio from ebay, sort of jumping ahead a bit while I wait on some new equipment, Lou's books, etc so please bear with me as I am definitely a rookie at this and trying to learn.
Radio arrived with blown open D23, swollen/leaking C123, clipped D11, bad/loose solder joints on + and - leads, missing power socket.
Removed D23 and C123 with the intention of replacing.
Re-attached D11 with a dab of solder, will end up replacing.
Radio powers on, internal speaker dead, external speaker cracks and pops sometimes but no noise with squelch opened, meter dead, NW panel not illuminating, and there is talkback on Dynamike knob. Radio keys, talkback works, no watt meter/scope/monitoring radio yet to test any further. I am TXing in to a dummy load.
There are a few globs of clear hot glue in several places on the front of the board and a newer looking blue capacitor up by the final, the back has several jumpers and resistors which may not be factory, and there are two red wires from the board spliced to two blue wires going in to the side of the meter and not entirely sure what they're for(unless those are for meter illumination). Unless something was very poorly installed or the person had terrible soldering skills, hard for me to say what's factory and what isn't since I'm so new to this.
Questions;
What is C123 for?
Did this radio come with talkback? I'm pretty sure it didn't.
How much of a pain is it to troubleshoot/repair the NW panel illumination?
From what you can see of the boards in the attached photos, any identifiable repairs or mods? That blue capacitor up by the final appears to be new, and I imagine other work has been done since D11 was clipped. Rear shot is after I removed D23 & C123 and resoldered the power leads.
Radio arrived with blown open D23, swollen/leaking C123, clipped D11, bad/loose solder joints on + and - leads, missing power socket.
Removed D23 and C123 with the intention of replacing.
Re-attached D11 with a dab of solder, will end up replacing.
Radio powers on, internal speaker dead, external speaker cracks and pops sometimes but no noise with squelch opened, meter dead, NW panel not illuminating, and there is talkback on Dynamike knob. Radio keys, talkback works, no watt meter/scope/monitoring radio yet to test any further. I am TXing in to a dummy load.
There are a few globs of clear hot glue in several places on the front of the board and a newer looking blue capacitor up by the final, the back has several jumpers and resistors which may not be factory, and there are two red wires from the board spliced to two blue wires going in to the side of the meter and not entirely sure what they're for(unless those are for meter illumination). Unless something was very poorly installed or the person had terrible soldering skills, hard for me to say what's factory and what isn't since I'm so new to this.
Questions;
What is C123 for?
Did this radio come with talkback? I'm pretty sure it didn't.
How much of a pain is it to troubleshoot/repair the NW panel illumination?
From what you can see of the boards in the attached photos, any identifiable repairs or mods? That blue capacitor up by the final appears to be new, and I imagine other work has been done since D11 was clipped. Rear shot is after I removed D23 & C123 and resoldered the power leads.
Attachments
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