This beauty is ready for work. Zenith Trans-Oceanic Royal D7000Y restore, part 4.
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- Опубликовано: 28 июл 2024
- I can now say that I've restored a Zenith 7000! What a pleasure. This baby came in looking really good cosmetically, but lacking in performance. She leave me in full working order and looking even better. It's really gratifying, especially knowing the love that the owner has for this set.
Hope you enjoyed the series, and get inspired to do yours, if you're lucky enough to own one.
Enjoy.
You can now support the channel:
/ mcaldeira
paypal.me/macaldeira
TimeStamps
00:00 This beauty is ready for work. Zenith Trans-Oceanic Royal D7000Y restore, part 4.
00:10 Introduction.
01:12 Rebuilding external AC supply.
07:07 MW RF alignment instructions.
11:24 Setting up the alignment.
12:02 Doing the alignment of MW.
19:28 LW RF alignment instructions.
20:48 Result.
22:50 After the SW alignment.
24:52 Finally, the result.
26:14 Testing reception.
34:24 SSB decoding.
36:50 Conclusion.
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I had my reservations on the 7000, having grown up in the era of the 3000 (I was 10 years old in 1960)
The 7000 is a great radio and I have now my own to cherish.
Thanks for this great series
my pleasure
Enjoyed the video. I have a RD7000Y since new. During a move it fell of the top.of a refrigerator and caused damage to the case. The radio was in working order before it was put in storage. The video allowed me to removed the guts so I can do repairs on the case.😊
👍
One of the rare case, where an American Radio is nice and not so ugly! You brought it back.
😊
I really like those Zenith Radio, s !! Wish I could find one !!
We can all find one. The problem is affording it 😊
Great Video.found one at a pawn shop on the bottom shelf. Got for 100 otd. It works and is in good shape. Will take a closer look tonight with a cigar and some 12y Bourbon. Thanks..
Those two items are very useful tools when restoring a radio 😊
Hi Manuel, that's a wonderful job you did, amazing radio! I had not expected there are so still many radio stations broadcasting these days on all of these bands. Beautiful radio!
thanks
Maybe one day, a video only about cleaning these radios, thank you.
Good for at least another 50 years!
Should be 😊
Have on exactly like this one. Bought it a couple of years off ebay. Outside is in good shape, just need it looked after the insides.
Good luck 👍
I have one of these. Not quite in as good condition but I am going to try to fix it.
It will be a project saved for my upcoming retirement.
👍
Amazing job. It’s unbelievable how active the bands are in your area. Broadcast band here only has 2 stations. Shortwave and longwave are dead silent during the day. Nighttime I can get a few from Mexico and that’s about it.
Actually, the only reason I get all these stations is because of the mini whip antenna I'm using. Without it, I get very little.
What a fabulous looking radio , and you are so methodical in the manner in which restore those radios , the alignment you have just shown us takes me back over sixty years to my time with Philips Ireland , Stay safe and many Thanks.
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Hi Manuel. That radio was certainly in the right hands, as it needed someone really special to get the best results from it. . The performance is really good and it looks superb as well. Another enjoyable series and as usual, a great result. Cheers Chris.
Thanks Chris
As always a great job. Love watching all your repairs and your explanation is just fantastic. Thank you.
my pleasure
Great job this series, as usual, in the restore and filming!
thanks
That was interesting the AGC mucking up the tuning thanks for that.
👍
Great work again, Manuel.
👍
Acho que temos mais um fã no clube dos zenith trans- oceânic😉
Um abraço
absolutamente 😊
Electronics old and new owne of the zenith trans oceanic Royal 7000 that you are work on is cool
The Rolls Royce of radios.
Good looks and verry good performance.
Just a peace of art.
Hey, you should check out the TinySA if you need a cheap signal generator and Spectrum analyzer that covers higher frequencies than the Rigol.
It's just fantastic what it can do, and It's really cheap too.
i’ve been thinking of getting one.
For the missing knob you may want to check / search Michael Dranfield. No guarantee, but he seems to have vast quantities of older parts.
I’ll do that. Thanks.
Excelente.
Obrigado
Someboudy should find the missing RF gain knob, but this again looks fantastic. Two more radios that would be very interesting to see restored:
- Panasonic RF-2200/DR-22. The best portable ever for mediumwave, very sensitive on FM and a very interesting bandspread mechanism for SW (tunes from ~3.5-28.5 MHz in 6 bands)
- Barlow Wadley XRC-30. Tuns from .5-30 MHz in 30 1MHz bands, very clever trick used to get the 1MHz bands from a tunable oscillator. This is a real challenge to get properly aligned, but Made in South Africa.
Oh boy. Now I’ve got to find one of the xcr -30’s. I grew up in SA and was there at the time this radio was produced. Should be an interesting quest for me 😊
I believe these were the last radio made in the US.
👍
For the 1.5 V bulb to LED exchange: you can find very small boosters for a few mA for peanuts ($ .20). Just had the same problem with an analogue meter with 1.5V continuity tester with a little lamp as indicator.
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@@electronicsoldandnew Yea... could be a great tip, but now I realize an analogue meter is something else as an AM receiver.... Will be plain noisy, so maybe not such a good idea 🥴
Looks like there is a version of that radio using the SO42P for FM/SW/MW and LW, was looking at the zenith_royal_d7000-1-2-sch.pdf
Is there am only who interested in radios , even Today to build this precious devices with accuracy is not possible , the semiconductor chips become way small also can do something what this huge package is doing but it's always interesting to see how progressed in electronic and communication
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Manuel, i just restore my D7000Y, that came the original power transformer, and measure 13Vcc (unloaded) with 220Vca input; with the radio at normal volume the voltage drops to around 12Vcc. I put a 1000uF electrolitic capacitor. Perhaps your not original transformer has a little higher voltage output. Saludos!
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NO hurry, sack time, got to hit the hay. I'll check back later...sent an email too. G3
Bloody good job Manuel, We certainly see the difference your Minwip makes testing receivers in the lab. How would it compare with the Zenith on its own antenna on your breakfast table or better yet on the beach?
The higher frequencies are pretty good with the it’s own antenna. However, as the frequency drops (below 10MHz or so) the miniwhip beats any other built-in antenna, on any radio.
Hey Manuel, what antenna do you have hooked up?
The mini-whip. I have a video on my channel of the build.
Hello. Thank you for posting this great video series on the d7000y. I have a similar radio that was working great and then one day no am or sw bands. FM and weather channels worked ok. I found the AM oscillator transistor was bad. I found a replacement and now am and sw bands are back. Problem now is am and sw bands are off on the dial. For example AM 1410 is about 1580 on dial. Shortwave bands are also off by similar amounts as Am. I believe the radio now needs an alignment. Your instructions are great, but the problem I have is I do not own a RF frequency generator. I have a scope and both analog (Simpson 260) and digital meters (Fluke). Is there a way I could do a simple alignment to get the dial more accurate without using a frequency generator. If alignment without frequency generator is not possible then do you have a recommendation for a cheap frequency generator that will get the job done. I would only need to align this one radio so not looking to spend a great deal of money. I was a control system engineer for 30 years so I have electronic/electrical knowledge but no radio repair experience. If I did have a RF generator I would be in great shape as your video was excellent and you are a great teacher in clearly showing how to do this alignment... best I have found. Anyway, thank you Sir for sharing your knowledge and any comment you might have would really help me and others in the same predicament. Take Care, Dean in Virginia
the best way for you to do this is by using known stations in your area. For example, if there is station near the bottom of the band, and another near the top, knowing their exact frequencies can be used for the alignment.
@@electronicsoldandnew Manuel, thank you very much for your speedy response. I will give that a try. Have a good evening.
I"ll find it. Can you help on the H500? Sent a note on it a few ago. Ac'd it. Thanks for the comeback:)
ruclips.net/video/H1pfRCvi1P4/видео.html
Hola Manuel, gran trabajo. Te la quedaste, es tuya ??
No, belongs to a friend of mine from Porto Santo.
@@electronicsoldandnew lucky man your ftiend !
Senhor Manoel boa noite já tem o rádio em mãos??
Nada ainda, infelizmente
favor enviar-me por email o código de tracking.
Chegou!
I have one of these, in very good condition. It has an inscription of the original owner engraved into the "Trans-Oceanic" metal plate next to the slide rule timezone that reads,
"Joe Geier
39 years of loyalty
to Rodefeld INC."
He was mentioned in a 1975 party invitation article so I think my T/O was manufactured at the tail end of production (1976-1978).
The 1.5V bulb for the chart light wouldn't work that well. I use one of those miniature bulbs rated 1.14W and it's very dim. I think the original was something like a 0.3V? It was much brighter than this but my brother idiotically stuffed it in a torch light and burnt the filament in like 1 second. So definitely not a torch light.
That’s a radio with a story 😊 Great retirement gift too.
Hola Manuel! Inspirado por tu restauración inicié lo mismo con una Royal 7000-1. Luego de cambiar los capacitores electrolíticos empezó a funcionar FM, pero no AM. Tengo Generador, Osciloscopio, Capacímetro, etc. La pregunta es: como llega la señal de 455KHz desde TR5 (aka Q102 121-687 ó 121-872) AM Mixer a la etapa siguiente TR6 (aka Q201 121-687 ó 121-872) AM-FM 1°FI? La base de este transistor está conectada al tuner de WB y FM por S1-7F, luego queda la base "en el aire" al pasar a las bandas de AM. Muchas gracias!
Hello Manuel! Inspired by your restoration I started the same with a Royal 7000-1. After changing the electrolytic capacitors, FM began to work, but not AM. I have Generator, Oscilloscope, Capacimeter, etc. The question is: how does the 455KHz signal arrive from TR5 (aka Q102 121-687 or 121-872) AM Mixer to the next stage TR6 (aka Q201 121-687 or 121-872) AM-FM 1°FI? The base of this transistor is connected to the WB and FM tuner by S1-7F, then the base is "in the air" when moving to the AM bands. Thank you very much!
The honest answer is that I have no idea. You’ll need to really follow the wiring, as there is no component layout drawing available. Fortunately the transistors are easily identified by their sockets. It’s slow, but possible.
@@electronicsoldandnew Gracias Manuel. Mi pregunta estaba basada en el circuito, encontré 2/3 versiones, y en todos la base de TR5 queda en el aire, sin conexión, en AM. Quiero entender primero el principio de funcionamiento de esta parte en la que se me pierde la señal.
Manuel, it's working now :). It was C203, a .05 ceramic disk capacitor, very difficult access, hidden by the band switch.
Lo medí luego afuera y estaba bien, parece que la pata que va a T202 tocaba a masa. Saludos!
👍
Hola amigo MANUEL TENGO UNA IGUALITA LA FALLA ESQUE PRENDE Y LUEGO SE APAGA LA SEÑAL DE AUDIO EN TODAS LAS BANDAS CHASQUEA FEO ASI ESTA QUE PODRIA SER
Where's the guitar input jack? :)
Needs some mods 😊