President Barry II CE MultiNorm CB radio - repair & service alignment

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UK FM CB radio servicing

UK FM CB radio servicing

Күн бұрын

This current model (2022) radio came in with no transmitted audio either on AM or FM or even in PA model.
With reference to the service manual & under the micoscope a 3mm lenth of copper burr was discovered to be across two SMT transistors. After removing the burr & performing a master reset of the software, normal operation was then possible.
After this, the radio was tuned up on the Maconi test set & produced 3.8W & full FM deviation of 2.2Khz average & peaking at 2.5Khz. The receiver has no adjustments & was/is doing 0.55uV for 12dB SINAD.
It's a shame this set wasn't returned under warrenty as it was a manufacturing defect.
Recorded 29Nov to 3Dec 3022
Richard, G0OJF
Lincolnshire, UK

Пікірлер: 15
@robmk3
@robmk3 2 жыл бұрын
Get me a good 80's set over this menu driven tosh any day, still well done on the repair Richard and also in guiding me to another one I'll be avoiding. Rob
@paulchapman1175
@paulchapman1175 2 жыл бұрын
Good evening Richard good luck on repairing the president Barry ll ce multinorm cb radio from paul chapman at east sheen 73s
@stevemunro8559
@stevemunro8559 2 жыл бұрын
Well done for finding the tiny piece of manufacturing debris. Without the scope it would have been near impossible.
@themaryjayneexperience5427
@themaryjayneexperience5427 2 жыл бұрын
The President Barry and it's menus of madness. Thanks, I'm put off of modern day President radios for life now.
@ukfmcbradioservicingTango21
@ukfmcbradioservicingTango21 2 жыл бұрын
Correct. They are nothing to write home about. Fancy having to learn a bizarre key sequence to access PA for starters. Richard
@messageobliquespe100
@messageobliquespe100 2 жыл бұрын
Well done Richard. That was easy! Lesson learned for those playing at home is to do a more thorough inspection of the board under magnification for any issues. A good desk magnifier / phone with magnification all that’s needed - I take a number of photos & scroll around to see if they’re any things to note. I’m not sure why people put off a repair/fault find tbh reading the comments so far. Having menu driven service functions make things easier too. Ok, SMD components can be tricky but with a bit of practice / research one can replace with the usual techniques to a fashion. The spec seems quite good for this radio 🤔 I’m dipping in/out on the uniden / uniace 100 as I’ve mentioned before. Good to pick up some tips here - noting the speaker wires twisted on this radio to reduce noise. All the best 👍
@600raficrow
@600raficrow 2 жыл бұрын
what a fun video .. like the magnification on the camera scope .. fiddly menus would drive ya nuts lol
@Davejazz
@Davejazz Жыл бұрын
Good job 👏 👍
@arenaengineering8070
@arenaengineering8070 2 жыл бұрын
Thanks for the video!
@chris_vandepeer
@chris_vandepeer 2 жыл бұрын
I wonder who was on the QC line that day.
@Davejazz
@Davejazz Жыл бұрын
Can a mic work with PA fine but not work on transmitted???
@ukfmcbradioservicingTango21
@ukfmcbradioservicingTango21 Жыл бұрын
Not a microphone, but the radio could have a fault wher PA is fine & TX audio is dodgy, Richsard, UK
@thierryrouyer4369
@thierryrouyer4369 10 ай бұрын
hi I like your video but I have a problem, I need the service manual. Can you tell me where I can get it? Thank you very much and I hope to see you soon
@ukfmcbradioservicingTango21
@ukfmcbradioservicingTango21 10 ай бұрын
Email me & I'll send it you, Richard
@BoB4jjjjs
@BoB4jjjjs 2 жыл бұрын
I think these menu-driven sets are going to be killed by their owners trying to fix things that should have been done at the factory! Bring back the old style radios, at least there was a chance of fixing then, even if you could not get half the parts. Now with modern radios, not a hope, surface mount makes it almost impossible when they are that small. Just grains of rice, how they can make them so small beats me?
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