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Old 20th Sep 2017, 8:32 pm   #10
Damo666
Hexode
 
Join Date: Jan 2010
Location: Blackburn, Lancashire, UK.
Posts: 399
Default Re: Midland Portapack 77-805 CB power meter problem

Checking the PCB layout of mine compared to the schematic and service manual linked in my first post reveals some differences. My board layout of components is completely different.

I just looked at the rear label on mine, and it's actually a 77-805D, and not a 77-805. I can't find any information on my variant, but I'm presuming it's just a later revised model.

Anyway, I just opened up the rig and noticed that a small green Ceramic Capacitor is in parallel with the inductor (right between the 2 blue insulation sleeves) that joins to the telescopic antenna stud socket - but the schematics provided in post # 1 look like the Capacitor (C304) that's in parallel with the inductor (L203) should actually have one leg to ground.

Can somebody confirm my findings, and could this be the problem?
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Last edited by Damo666; 20th Sep 2017 at 8:54 pm.
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