Tag Archives: Radio Repair

Wlodek repairs a near mint Sony ICF-SW7600

Sony ICF-SW7600 (Source: Universal Radio)

Many thanks to SWLing Post contributor, Wlodek, who has been quite busy repairing vintage receivers and ham radio gear during the Russian invasion of Ukraine. Wlod’s neighborhood in Kiev experiences frequent blackouts, thus much of his soldering work must be done while mains power is available.

Wlod just shared the following video documenting a recent repair he did on a new-old-stock Sony ICF-SW7600.

Wlod notes:

One of [my last repairs] was new old stock Sony ICF-SW7600 restoration. One guy watched my past videos and wanted one for himself. I don’t know where he found it in such excellent external condition, but age and typical problems require it to be prophylaxis.

The first turn on and it does not receive the station at all. These receivers have a known problem of leaking electrolytic capacitors. They also need to be alignment.

I demonstrate how to safely remove old capacitors.

Click here to view on YouTube.

Thank you so much for sharing this with us, Wlod! What a beautiful portable in near mint condition!

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Gabry repairs a problematic Tecun PL-660 encoder

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Many thanks to SWLing Post contributor, Gabry Rizzi (IV3MIR), who writes:

Hi, I’m an Italian radio amateur IV3MIR and I have a YouTube channel entirely dedicated to the radio “GabryMir Radio”. I’m sending you the link of one of my latest videos. If you like it I would be happy to see it on your blog.

I hope the automatic youtube translator does a good job.
Cordially 73 and Happy New Year!
Gabry Rizzi IV3MIR

Click here to watch via YouTube.

Note that Closed Captions can be translated into English and other languages.

Thank you for sharing your video with us! I’m happy you were able to sort out the issue with your ‘660 encoder!

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Wlodek repairs a Grundig G3

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Our friend, Wlodek (US7IGN), who was recently featured in a BBC Radio 4 documentary, has been repairing radios throughout the Russian invasion of Ukraine.

A few weeks ago, he received a Grundig G3 from Charles (KC8VWM)–it was in need of repair. Wlod immediately cracked the case open and started diagnosing the problem!

Click here to read his blog post detailing the review.

Grundig G3 Globe Traveller

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Servicing older Icom radios?

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Many thanks to SWLing Post contributor, Mark Irish, who writes:

Icom America has indicated that it no longer services Icom radios manufactured after December 2010. Please let me know if you have a recommendation for someone who repairs older Icoms, preferably in DC metropolitan area or in North Carolina and in Virginia. Thank you, Mark

Thank you,

Mark Irish

Thank you for your question, Mark. You’re in luck because my friend Vlado (N3CZ) does repair Icom radios of pretty much any age.

He has extensive experience with Icom, but also routinely works on Yaesu, Kenwood, Elecraft, Sony, Panasonic, and numerous other brands. If it’s solid state (meaning, not vacuum tube or valve gear) he can fix it.

Vlado lives in Asheville, NC, but he has customers all over the world. You can reach him through his website at: http://hamradio.repair

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Pavel fixes a stereo lock in the Eton E1

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Many thanks to SWLing Post contributor, Pavel Kraus, who shares the following guest post:

Eton E1 – fault in stereo reception

I recently became the owner of an Eton E1 receiver, which I obtained on eBay from the USA.

The receiver is great, everything worked, error-free display. The only problem was that even FM and strong local stations did not play stereo even though stereo reception was set in the menu. The stereo text on the display flashed several times when the stations were not tuned in precisely, but after the stereo tuned, the text went out. I know that stereo reception is not the most important thing for this receiver, but it bothered me that there was a defect at all.

The Sanyo 3335 stereo decoder is used in this radio. The stereo reception switching threshold can be set with a 10kohm potentiometer which is connected to terminal 4 of the integrated circuit:

I disassembled the radio by loosening the screws on the back of the radio. The receiver is divided into two parts. I removed the XM module and disconnected the part of the radio with the display from the flat wires on the second printed circuit board of the radio.

I then removed the screws on the circuit board located at the back of the radio.

I removed the printed circuit board and found a matching resistor trimmer on the other side of the circuit.

Then I connected these two points with a wire (when running on batteries) so that I could turn on the receiver:

After tuning in to a strong local transmitter, I carefully turned the trimmer until the stereo sign lit up and listening to the headphones made sure the sound matched the stereo. I repeated this at several local stations.

The receiver now plays stereo perfectly and the settings do not affect other parameters of the receiver. After assembling the radio, I was able to enjoy quality stereo reception.

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Guest Post: “Tinkering with History”

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Many thanks to SWLing Post contributor, Bob Colegrove, who shares the following guest post:

Tinkering with History

By Bob Colegrove

One of the attractive aspects of radio as a hobby is that it has so many specialties to channel our time. Just for the sake of classification, I would group these into two categories, listening and tinkering. I think the meaning of each category is fairly intuitive. Probably few of us approach our interest in radio in the same way. Most of us have dabbled in more than one listening or tinkering specialty. Perhaps we have been drawn to one particular area of interest, or we may have bounced around from one to another over a period of time. I know the latter has been my case.

Tinkering might start with a simple curiosity about what makes the radio play, or hum, or buzz, and progress to an obsessive, compulsive disorder in making it play, hum or buzz better. Unfortunately, over the past 30 years or so, the use of proprietary integrated circuits, as well as robotically-installed, surface-mounted components have greatly short-circuited what the average radio tinker can do. For example, I have noticed a lot more interest in antennas over that period, and I think the reason is simple. The antenna is one remaining area where a committed tinker can still cobble up a length of wire and supporting structure and draw some satisfaction. But the complexity and lack of adequate documentation have largely kept newer radio cabinets intact and soldering irons cold. Bill Halligan knew you were going to tinker with his radios, so he told you how they were put together. The fun began when you took your radio out of warranty. If you did get in over your head, there was usually somebody’s cousin not far away who could help you out. The following is a sample of how one resolute tinker managed to overcome the problem of locked-down radios in the modern age. Continue reading →

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Radio Waves: Radio 77, RRI Personality of the Year, Radio Repair in Iraq, and Bernard’s Collection of 500+ Radios

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Radio Waves: Stories Making Waves in the World of Radio

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers. To that end: Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

The DJ Who Broadcast to One Listener for 40 Years (Narratively)

The Deke Duncan show on Radio 77 had it all — the latest hits, bouncy jingles, and a DJ who was born to be on the airwaves. In the 1970s it ran around the clock, several days a week, playing to the smallest audience in the world: Deke’s only listener was his wife. Radio 77 was based in a shed in Duncan’s backyard in a small English town, and everything on the show was a figment of his imagination. “My ultimate ambition would be to broadcast my radio station to the rest of Stevenage,” he told the BBC’s Nationwide TV show, when they visited his shed in 1974.

In a new podcast episode from Snap Judgement and Narratively, Duncan, now 75, reveals how he made up the news, the weather, and even the commercials — and kept Radio 77 alive for over forty years. It was Britain’s ‘pirate’ radio stations that inspired him, he said, recalling the rock’n’roll ships that broadcast illegally from international waters in the 1960s. But the young DJ’s dreams had been dashed when the BBC turned down his job application.

“They said, ‘I suggest you go away and get yourself a real job,’” Duncan recalled. (Check out an original Radio 77 show, recorded in 1974.) [Continue reading…]

RRI Personality of the Year (Radio Romania International)

Dear friends, RRI continues its traditional polling of listeners on short wave, the Internet and social media, with a new challenge, in a further complicated context generated by the Covid-19 pandemic. We would like to ask you which person you think left their imprint on the world in a positive way in 2021.

We are preparing to designate, based on your options, “The Personality of the Year 2021 on RRI”. Will this person be a public person, an opinion leader or a regular person with a special story? The decision is yours. We would also want to ask you why you picked that particular person. Continue reading →

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