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Sony CRF-5090 Earth Orbiter restoration. Part 1 

Electronics Old and New by M Caldeira (Electronics Old and New)
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This is a first for me: I have never restored a Sony receiver before, so I jumped at the opportunity to work on this Sony CRF-5090 world receiver. It's also called the 'Earth-Orbiter', obviously to appeal to those who, at the time that this device went to market, depended on the vast number of Short-Wave stations that were the most common form of spreading news across the world.
Its condition is a little disheartening, but it also provides an opportunity to achieve a great 'before and after' wow factor.
It covers practically the entire AM band, as well as FM and Airband, so it certainly has all the coverage you could wish for. The inclusion of a built-in BFO allows you to decode SSB transmissions in the Amateur bands, and a fine tuning control makes tuning in to those very close-packed SW stations a breeze.
Join me on this project, and let's see if it lives up to its hype. I certainly hope so.
Enjoy the video.
#RadioRestoration #SonyCRF #VintageElectronics
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2 окт 2024

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Комментарии : 67   
@MrElectrowhiz
@MrElectrowhiz Год назад
I have the 5100 version. Some of the bands are not working properly and I think the fault is the band selector switch. Also, I think the main filter cap is bad. This is the first video that i have seen about this so I look forward to continue to watch the remaining videos about this radio.
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@michaelwitas9482
@michaelwitas9482 Год назад
I have three of these Sony radios, one 100% working and the other two sort of working :). Mine are all the 5100 version, which is mostly the same as the 5090. I love how you do repair videos of high quality multi band radios that were popular worldwide. The Earth Orbiter is perhaps the most blatant copy of the Zenith Trans Oceanic, which was once built in Zenith's Chicago area factory. I believe our local TV store sold both radios, since they were both a Zenith and Sony dealer. By the early to mid 1970's, the Trans Oceanic was sort of a dinosaur, a good one, but still an old style American radio. These radios look great when placed on a shelf in a den or home office. My Sonys have that slightly "muddy tone" too.
@electronicsoldandnew
@electronicsoldandnew Год назад
I wonder how the prices compared in the same store 😊 I think the zenith has a more vintage feel, and definitely a more vintage build.
@michaelwitas9482
@michaelwitas9482 Год назад
I don't believe the Trans Oceanic, except for the very last 7000 ones with the orange trim, have printed circuit boards. If so, not to the extent that the Sony does. I will have to check what I paid for my Sony's in that "store" :).
@electronicsoldandnew
@electronicsoldandnew Год назад
Yes, the TO uses a version of point to point wiring.
@DavidTipton101
@DavidTipton101 Год назад
A piece of cod and minimum chips please Manual. 😉 Didn't Sony make some great gear and is still my pick in electronics along with Panasonic. That is a nice radio. Thanks Manuel 👍🙂
@electronicsoldandnew
@electronicsoldandnew Год назад
I got out of the F&Chips business as soon as I went to varsity. Until then (from the age of 13), I was part of the labour force (Portuguese families were like that 😊). Hated every minute of the hours I worked after school, on weekends, and school holidays, but it created a bond with my parents that I treasure still. The smell … nah, never want to go through that again 😊.
@horatiohornblower868
@horatiohornblower868 Год назад
Manuel, you should one day be doing a project with Dave Tipton. Would be great fun.
@electronicsoldandnew
@electronicsoldandnew Год назад
I have actually thought of this, but the distance between us makes it quite a challenge.
@gerardcarson2779
@gerardcarson2779 Год назад
Nice work., and already a very good result. I've worked on a few Japanese transistor radios from this era and have invariably found the electrolytics to be fine - and makes me wonder if that might be helped by the moist atmosphere the UK (where this set comes from) is usually immersed in. Always found them to be nicely made radios as well if also a pain to take apart/get in to. This Sony one is shaping up really well.
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@josealeixes2861
@josealeixes2861 Год назад
Senhor Brenton bom dia!! O senhor está em Londres???
@electrosoundaust
@electrosoundaust Год назад
Hi Manuel, didn't Sony make some great gear over the years. I think they ended up being the consumer radio to beat. Sad what they have become. I picked up a CRF-160 2 weeks ago that looks quite different but I'm sure is similar inside. It wourks beautifully on FM, but the AM is dead mainly because the piano keys don't latch. It also weighs 8.5kg. I'll get around to it one year! I also have 23 Sony reel to reel decks, again long term projects. National Panasonic also made some great radios, and get this, I recenty found out they were partly owned by Philips!
@electronicsoldandnew
@electronicsoldandnew Год назад
23 decks?!!! Wow, you’re worse than me 😊 good luck with the restorations.
@antiquetaperecorderlovermu9699
@antiquetaperecorderlovermu9699 11 месяцев назад
Super super super 👌👌👌
@electronicsoldandnew
@electronicsoldandnew 11 месяцев назад
Thank you
@ralphj4012
@ralphj4012 Год назад
Good progress Liked the stick-long-wires-on-and-pull-through-capacitor technique, to avoid too much disturbance. Been close to too many wood-fired braai's, perhaps.
@electronicsoldandnew
@electronicsoldandnew Год назад
Could be. All the boerewors fat got on there 😊
@josealeixes2861
@josealeixes2861 Год назад
Meu Deus muito trabalho senhor Manoel mais vai ficar top parabéns tenha um bom fim de semana abençoado…
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@tubeDude48
@tubeDude48 Год назад
There was a commercial back in the '80's in the US. Quote "If your aloney, get a Sony"! --- For the battery contacts, they can be replaced, (there out their)- Or, use vinegar, rinse with alcohol, then use Tarn-X to bring the shine back, and DeoxIT D5 to neutralize the Tarn-X and coat the contacts.
@electronicsoldandnew
@electronicsoldandnew Год назад
😊
@veewee111
@veewee111 Год назад
Those five small control knobs have always felt a bit tight to turn since my parents bought it new for me from Coast to Coast hardware store in Kirkland WASH. Think about 1975 that was! Thanks for the video. Have wanted to sort out how to take it apart for a good cleaning and possibly replace the illumination bulbs with LEDs.
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@boriskolev9513
@boriskolev9513 Год назад
Hello Manuel, so what is the conclusion for the missing high frequencies from the beginning? Dirt/pots or else? Thnx.
@electronicsoldandnew
@electronicsoldandnew Год назад
Could be the DC blocking cap to the speaker. Dirt could also do that.
@charlieb.4273
@charlieb.4273 Год назад
I’ve got a couple of Sony tape recorders. They seem to be not very convenient to service. Wires going everywhere, no jacks or plugs to allow access to the electronics and the foam seems to melt over the years. I’m sure they were great products when produced but hell to keep working. Charlie in Virginia
@electronicsoldandnew
@electronicsoldandnew Год назад
True. These radios rarely used sockets, so servicing is a challenge.
@t1d100
@t1d100 Год назад
I wanted to point out the channel indicator needle has a light bulb built into it, so that you do not break its fine wire. The light was working, during the introduction. HTH.
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@joerotman5214
@joerotman5214 Год назад
Can't wait to watch the series. I have a Sony CRF-230 myself.
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@thecelticprince4949
@thecelticprince4949 Год назад
Might look like Fush n chups, but does it smell like putrid fry oil.
@electronicsoldandnew
@electronicsoldandnew Год назад
The smell is actually neutral, but I cannot imaging what else would create this greasy layer. I remember that we had a radio in our family business in SA, and the entire thing was like this 😊
@erikdenhouter
@erikdenhouter Год назад
A tip for an educational short video, this very simple demonstration 🧐 : take a good audio source, like this FM radio. Put an external speaker (not a box) on it with wires of a meter length, so you can move the speaker around. Take a piece of large cardboard (at least 50x50 cm), and make a hole in the middle the size of the speaker cone. Now, put that audio source at a reasonable volume, on the speaker, holding the speaker bare in your hands. Observe the sound quality. Then move that speaker behind that cardboard, and press it exact over the hole. Now observe the volume and tone difference. You will be amazed. They call it the 'tone board' for a very good reason. What you are doing is preventing the lows to short through the air to the other side of the cone. Such short wave path will make no air pressure. By forcing the lows to go all away around the tone board, the air will be pressurized, and a fully amplified sound appears. (What I am really trying to show is why the sound of the radio sounds much less bulky when its cabin is open, and the bass is 'shorted')
@electronicsoldandnew
@electronicsoldandnew Год назад
Fair point. However, I have a fair idea of what to expect from these speakers, even when out of the normal cabinet environment. The fact that the speaker is in the faceplate, effectively already having a partial tone board effect, makes the perception even closer to what it will sound like in the closed radio. I always detect a fuller bass effect when I close it up, as expected.
@erikdenhouter
@erikdenhouter Год назад
@@electronicsoldandnew Yep, a part of the cabinet is still functioning like that now. You could control that effect by opening up the cabinet around the speaker, but that will be a gamble. (It was a lesson for me 50 years ago, and that effect never seized to amaze me, so that's why I though of a short video, it is basic audio knowledge that is never mentioned)
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@mackfisher4487
@mackfisher4487 Год назад
So did you use the air brush process?
@electronicsoldandnew
@electronicsoldandnew Год назад
Not this time. I did it late at night, and didn’t want my wife to hear me and find something else she may have felt needed cleaning 😊
@richardbrobeck2384
@richardbrobeck2384 Год назад
I have a Zenith to go on the bench this winter !
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@lennartbenschop656
@lennartbenschop656 Год назад
Don't you have customs issues when sending radios between the UK and the EU?
@electronicsoldandnew
@electronicsoldandnew Год назад
Yes, we do. However, if the item is marked as a “gift”, them the customs charges are only based on the shipping costs. I’m the two recent cases, the customs was around €30 each.
@ivanigorpollick6690
@ivanigorpollick6690 Год назад
very capable radio
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@pinkartnail
@pinkartnail Год назад
good
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@JonRig
@JonRig Год назад
Great work!! These world radios are really growing on me!!! Although I'm about to face a dial string horror on a Satellit 6000. It went ping on me the other day (and it's the worst one which does the tuning on the SW drum). Thankfully I have your excellent 6001 reference videos, which will be of great help. I am dreading it though. I hate doing dial strings so will have to pick a moment when I have the right level of calm and patience. At least it is clean inside. I don't think it's been near a chip fryer!! 😂
@electronicsoldandnew
@electronicsoldandnew Год назад
I have actually become more confident with dials strings of late. I spend a little time really getting to understand the drawings before getting into it. Good luck 🤞
@EsotericArctos
@EsotericArctos Год назад
A lot of radios were licensed back in the day, rather than just flat out copying. That said, Sony had some really great radios in the CRF series back in the day. Looking forward to seeing how this turns our :) Is that horrible brown glue on the caps that glue that goes conductive over time?
@electronicsoldandnew
@electronicsoldandnew Год назад
I checked the glue but it seems to be OK. Thankfully 😅 I ama till hoping to get a CRF-320 sometime. That seems like a fabulous set.
@MrsG7swr
@MrsG7swr Год назад
if you ever want to play with a Riga soviet built radio i have two I bought hoping to make one good one, but realised my skill knowledge and equipment is not up to the task.
@electronicsoldandnew
@electronicsoldandnew Год назад
Never worked in one of those. What model is it?
@MrsG7swr
@MrsG7swr Год назад
@@electronicsoldandnew Riga 103 heavy even without the batteries, three sw bands MW, LW and ORIT FM about 70 to 66 mhz.
@electronicsoldandnew
@electronicsoldandnew Год назад
Pity about the FM range.
@MrsG7swr
@MrsG7swr Год назад
@@electronicsoldandnew it is indeed as it is long dead here in CZ, i have heard there was an export version with the regular FM, but that is is not a simple change to make post production. it was quite interesting to see the difference in components used as in the look and shape.
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@geirendre
@geirendre Год назад
Nice and sensitive radio. Looking forward to the rest of the restoration.
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@mauryfeskanich4523
@mauryfeskanich4523 Год назад
“Should only need one more video.” Yeah, we’ve heard that one before! 😂 Sounding good! Looking forward to the new printer! PS: I second the suggestion of a project with Dave Tipton. 😎
@electronicsoldandnew
@electronicsoldandnew Год назад
😊 I’m an optimist, but sometimes the projects insist on taking longer that I planned. I actually spoke to Dave about doing something together, but the distances are just too great.
@mauryfeskanich4523
@mauryfeskanich4523 Год назад
@@electronicsoldandnew Ah well. We hear about each of you in the other’s videos often enough, so we can always dream… If you two ever did meet up, I’m sure everyone would love to see a bit of video!
@electronicsoldandnew
@electronicsoldandnew Год назад
👍
@danielknepper6884
@danielknepper6884 Год назад
The owner is lucky on this one, these are known to have warped plastic on the cylindrical tuning dial.
@electronicsoldandnew
@electronicsoldandnew Год назад
Yes, I know about that common problem. This one is good, fortunately
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