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 Post subject: Wanted Service Manual of Grundig Satellit 750
PostPosted: Sep Fri 04, 2015 4:04 am 
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Joined: Aug Wed 19, 2009 1:33 am
Posts: 193
Does anybody has or can direct me where to get the service manual of Grundig Satellit 750 ?
Thanks in advance !


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Sep Sat 05, 2015 8:45 pm 
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Joined: Jun Mon 15, 2015 9:05 pm
Posts: 365
Location: Kalispell, Montana
http://www.grundig.owner-manuals.com/SA ... UNDIG.html

I hope that copied correctly. It will cost 4.99 for the service manual, according to the site, but I think this is what you are looking for.

I hope this helps you.

Tony
KC7ZWH


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Sep Sun 06, 2015 2:57 pm 
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Joined: Dec Sun 22, 2013 5:03 am
Posts: 2382
Location: Santa Cruz mountains
The link references a manual for the Satellit 700, completely different radio made in the 1990s by Grundig in Portugal. The Satellit 750 is a Grundig-branded set distributed by Eton and made by Tecsun in China and is also known as the Tecsun S-2000. The Tecsun version is known to be somewhat different from the Eton version.

The Eton radios are notoriously difficult to find service info for. The Tecsun radios are more accessible, so you might want to look there.


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Sep Sun 06, 2015 3:12 pm 
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Joined: Jun Mon 15, 2015 9:05 pm
Posts: 365
Location: Kalispell, Montana
Yeah, I knew it was for the 700, but I was hoping on that site that it would also have information for the 750. I should have stated that in a clearer manner in my original post. You are right, it is difficult to find service information for these radios. It makes me wonder if they really want a person to be able to service their equipment. It did not used to be this way. It seems, though I may be incorrect, that the equipment made in China...they would rather have you toss it than repair it.

Tony
KC7ZWH


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Sep Sun 06, 2015 8:25 pm 
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Joined: Dec Sun 22, 2013 5:03 am
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Location: Santa Cruz mountains
A year or so ago, I acquired some customer return Grundig-branded S450 "field radios" for an extremely low price. About a dozen of them, I think. Like the 750, service information is non-existent. The situation is even worse for these because they are built specifically under contract for Eton and have no direct Asian-branded equivalent anywhere.

I was able to repair several of them by module swapping. Those were the easy ones.

With those that were left, I analysed the internals. What I found was that all of the ICs were Chinese clones of off-the shelf Japanese components in which the patents had expired. Thus, it was possible to pull the data sheets on the individual ICs and study how they work. From that, I was able to repair a couple of the radios with no other service information.

This may be the route that the OP will have to go. I would expect that a schematic would have appeared somewhere online for the Tecsun version by now (the 750 came out in 2008) but I was not able to find one by searching.

I also acquired some ultra-cheapo Grundig-Branded M400 pocket radios from the same vendors. These radios were made in both analog and digitally synthsized versions and both use off-the-shelf components in their designs.

The QA of all these radios are really bad. All sorts of weird problems have been reported out-of-box and the return rate is high, with returns being necessary two or three times for some buyers.

I don't think that the Chinese have the capability to produce complex custom ICs for their internally designed stuff yet. Most of their stuff seems to be very derivative of earlier technologies. For guys like us, that is actually a good thing because it means it is still possible to get some components for them and possibly gain some knowledge of the inner workings of the radios that facilitates a successful repair.


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Sep Tue 08, 2015 4:59 pm 
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Joined: Dec Sun 22, 2013 5:03 am
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Location: Santa Cruz mountains
http://www.tecsun.com.cn/product/s2000/ ... manual.pdf


http://www.radioaficion.com/HamNews/ima ... 083325.pdf

The link above has a manual in Chinese that includes a block diagram with relevant chip numbers and pin numbers.

This is about the only service info available on-line.


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Sep Tue 08, 2015 6:19 pm 
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Joined: Aug Wed 19, 2009 1:33 am
Posts: 193
@Primitiveradiogod

Thanks Primitiveradiogod I'll see what I can do with that info, something is always better than nothing at all ! ...Thanks a lot!


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Oct Mon 08, 2018 10:52 pm 
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Joined: Aug Mon 28, 2006 3:07 am
Posts: 955
Location: Boston, MA
Bump, I too need an SM.


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Oct Mon 08, 2018 11:36 pm 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 17520
Location: Mountains of Mourne. Ireland.
Some hand drawn (Russian) circuits can be downloaded from elektrotanya.com
https://elektrotanya.com/grundig_satell ... nload.html
On the elektrotanya website...
Wait for the ...processing... notice to change to Get Manual ←it takes a while!

There is no service manual... :)


Sadly, Scott Harvey Primitiveradiogod lost his life in February of this year.
viewtopic.php?f=2&t=335340

Greg.


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Oct Wed 10, 2018 12:18 am 
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Joined: Aug Mon 28, 2006 3:07 am
Posts: 955
Location: Boston, MA
It's terrible that this manufacturer provides no support for both parts and service.


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Oct Thu 18, 2018 3:29 am 
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Joined: Aug Wed 19, 2009 1:33 am
Posts: 193
Morseguy

I didn't get the manual but I managed to repair the radio, somebody plug an AC/DC adapter with the wrong polarity burning the regulator IC and the Amplifier IC so it wasn't difficult to fix it. May I ask you was wrong with your radio ?


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Nov Thu 01, 2018 9:43 am 
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Joined: Oct Tue 23, 2018 8:04 pm
Posts: 10
Bonjour

Si vous voulez le schéma gratuit il faut m'envoyer votre adresse mail a ( ferdinand.stolle@neuf.fr )

Et moi je vous envoie le retour compresser


Cordialement : Ferdi057


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: May Sun 05, 2019 10:03 pm 
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Joined: May Fri 03, 2019 4:56 am
Posts: 4
Did anyone get a hold of it ? ( Grundig Eton Satellit 750 service manual?)
Thanks !


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: May Sun 05, 2019 11:33 pm 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 17520
Location: Mountains of Mourne. Ireland.
Made by Tecsun in China and is also known as the Tecsun S-2000
There is no service manual.

Why do you need one?
:) Greg.


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Nov Tue 05, 2019 7:00 pm 
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Joined: Aug Mon 28, 2006 3:07 am
Posts: 955
Location: Boston, MA
Mine is slightly off frequency.


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Mar Tue 30, 2021 11:00 am 
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Joined: Mar Tue 30, 2021 10:20 am
Posts: 1
Huesby wrote:
Morseguy

I didn't get the manual but I managed to repair the radio, somebody plug an AC/DC adapter with the wrong polarity burning the regulator IC and the Amplifier IC so it wasn't difficult to fix it. May I ask you was wrong with your radio ?


Hello Huesby

I have a Satellit 750 with the same problem. Could you tell me which ICs you replaced?


I think one is the 4VCW, but there is no replacement. Is that so?

Thanks and regards

Jorge


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Jun Wed 16, 2021 8:53 pm 
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Joined: Jun Wed 07, 2017 2:20 pm
Posts: 39
Location: São Paulo/SP Brazil
Please does anyone have the electrical maintenance scheme for the Grungig Satelite 750 radio please.
thanks any help

_________________
QSL do Brasil
ZENYTH ROYAL 3000
ZENYTH 7000
http://qsldobrasil.blogspot.com
SP - SP
Br


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 Post subject: Re: Wanted Service Manual of Grundig Satellit 750
PostPosted: Jun Fri 18, 2021 1:10 am 
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Joined: May Wed 22, 2013 6:58 pm
Posts: 43
Location: Cincinnati, Ohio
There is serious discussion about Grundig Satellit 750 on this russian forum (I didn't read it),
with mods/repairs (I hope you have some translation software in your browser):
http://www.radioplaneta.ru/forum/viewtopic.php?f=5&t=4

Someone there made a pdf with the mods from the forum posts, where you can find the voltage
regulator sch, which shows how to replace the 4V reg with any one producing 4V, and which will
work from 6V input (page4 -in the first one).


Attachments:
Grundig_Satellit_750_mods.pdf [1.28 MiB]
Downloaded 32 times
Grundig_Satellit_750_mods_2.pdf [493.41 KiB]
Downloaded 24 times
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