Grundig Mandello no power - Page 3 - UK Vintage Radio Repair and Restoration Discussion Forum

Stephen82 · 15th Feb 2019, 3:45 pm

Hi Graham

I've tested the mains output labeled 3&4 in the attachment in post #33 and nothing at all I have attached a picture of what I'm looking at to help

Station X · 15th Feb 2019, 3:48 pm

That points to the mains switch being faulty. Please confirm that there's no voltage on its output.

If it is faulty bridge it out by soldering two short pieces of wire between the input and output terminals.

Stephen82 · 15th Feb 2019, 3:53 pm

The mains output I tested was the labeled as 3&4 in your post #33 which I assume is right and there is nothing coming out

Station X · 15th Feb 2019, 3:54 pm

If the mains switch isn't accessible join tag 1 of the tag strip to tag 3 and tag 2 of the tag strip to tag 4.

Station X · 15th Feb 2019, 3:57 pm

Let's try again. I assume you have 250VAC on tags 1 and 2, but nothing on tags 3 and 4?

That being the case the mains switch is faulty and you'll need to bridge it as previously described.

Stephen82 · 15th Feb 2019, 3:57 pm

I am assuming by tag strip you mean the bit where the mains wire plugs on to the power supply

Station X · 15th Feb 2019, 4:00 pm

It actually appears to be a plug and socket as shown in post #41. Assuming it has pins labelled 1 to 6, then that's it.

Stephen82 · 15th Feb 2019, 4:04 pm

Right so I need to attach pin1 to pin3 and pin 2 to pin4. pin 1 being live and pin 2 being neutral

Station X · 15th Feb 2019, 4:05 pm

Yes. Use two short pieces of wire.

Stephen82 · 15th Feb 2019, 4:08 pm

OK just one more question will that not bypass the glass fuse

Station X · 15th Feb 2019, 4:12 pm

No. It'll just bypass the switch.

kirstyd · 15th Feb 2019, 10:01 pm

Just a thought but i once looked at one of these for a friend .It had a rather strange mechanism for switching on and off .when pressing one of the selector buttons the mains switch was pulled down by a cable when pressing the off button the cable was released and the switch was pulled back to the off position by a spring .it could be something as simple as that and worth a quick look before disturbing anything else

Station X · 15th Feb 2019, 10:12 pm

That sounds very likely.

The OP seems to be adverse to taking readings at the actual switch, preferring instead to do so at the 6 way plug and socket. This makes me think the switch may be difficult to identify or access.

At least temporarily bridging the switch will show whether it's the only fault.

Stephen82 · 16th Feb 2019, 1:46 pm

Hi Graham

I've just bridged the power supply and the radiogram came on but I have no radio signal from the fm side of the radio at all would this be a separate issue
Thanks
Stephen

Station X · 16th Feb 2019, 2:00 pm

No FM is a separate issue which was discussed in this thread:-

https://www.vintage-radio.net/forum/...d.php?t=152849

I suggest you try to find out why the OFF/ON switch isn't working. Post #52 may give a clue.

Stephen82 · 6th Apr 2019, 2:05 pm

Hi Guys

It's been a while i know but i thought i update with what's going on. Firstly i have now fixed the FM issue which was indeed the ECC85, so this clearly has a lot to do with whether FM radio even works. Now to the other issue of the power supply. I have removed the chassis and as far as i can tell the off switch is working ok, so as to why it doesn't turn on/off with the buttons I'm still not to sure but i will keep investigating. I also am hoping someone could possibly tell me which tape deck is meant to go with this Mandello e/gb as i have tried looking this up but seem to get conflicting information about whether it is a reel to reel or a cassette type player so a model number would be most helpful

Take Care
Stephen

Edward Huggins · 6th Apr 2019, 5:36 pm

You can use either a Reel-to-Reel or a Cassette deck.
On your Mandello there should be a 5 pin DIN socket for the tape record and playback functions - using just one 5 pin DIN lead.

15th Feb 2019, 3:48 pm	#42
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Grundig Mandello no power That points to the mains switch being faulty. Please confirm that there's no voltage on its output. If it is faulty bridge it out by soldering two short pieces of wire between the input and output terminals. Attached Thumbnails __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

15th Feb 2019, 3:53 pm	#43
Stephen82 Retired Dormant Member Join Date: Jun 2015 Location: St Clement, Jersey. Channel Islands. Posts: 40	Re: Grundig Mandello no power The mains output I tested was the labeled as 3&4 in your post #33 which I assume is right and there is nothing coming out

15th Feb 2019, 3:54 pm	#44
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Grundig Mandello no power If the mains switch isn't accessible join tag 1 of the tag strip to tag 3 and tag 2 of the tag strip to tag 4. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

15th Feb 2019, 3:57 pm	#45
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Grundig Mandello no power Let's try again. I assume you have 250VAC on tags 1 and 2, but nothing on tags 3 and 4? That being the case the mains switch is faulty and you'll need to bridge it as previously described. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

15th Feb 2019, 3:57 pm	#46
Stephen82 Retired Dormant Member Join Date: Jun 2015 Location: St Clement, Jersey. Channel Islands. Posts: 40	Re: Grundig Mandello no power I am assuming by tag strip you mean the bit where the mains wire plugs on to the power supply

15th Feb 2019, 3:45 pm	#41
Stephen82 Retired Dormant Member Join Date: Jun 2015 Location: St Clement, Jersey. Channel Islands. Posts: 40	Re: Grundig Mandello no power Hi Graham I've tested the mains output labeled 3&4 in the attachment in post #33 and nothing at all I have attached a picture of what I'm looking at to help Attached Thumbnails

15th Feb 2019, 4:00 pm	#47
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Grundig Mandello no power It actually appears to be a plug and socket as shown in post #41. Assuming it has pins labelled 1 to 6, then that's it. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

15th Feb 2019, 4:04 pm	#48
Stephen82 Retired Dormant Member Join Date: Jun 2015 Location: St Clement, Jersey. Channel Islands. Posts: 40	Re: Grundig Mandello no power Right so I need to attach pin1 to pin3 and pin 2 to pin4. pin 1 being live and pin 2 being neutral

15th Feb 2019, 4:05 pm	#49
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Grundig Mandello no power Yes. Use two short pieces of wire. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

15th Feb 2019, 4:08 pm	#50
Stephen82 Retired Dormant Member Join Date: Jun 2015 Location: St Clement, Jersey. Channel Islands. Posts: 40	Re: Grundig Mandello no power OK just one more question will that not bypass the glass fuse

15th Feb 2019, 4:12 pm	#51
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Grundig Mandello no power No. It'll just bypass the switch. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

15th Feb 2019, 10:01 pm	#52
kirstyd Heptode Join Date: Mar 2014 Location: Leeds, West Yorkshire, UK. Posts: 902	Re: Grundig Mandello no power Just a thought but i once looked at one of these for a friend .It had a rather strange mechanism for switching on and off .when pressing one of the selector buttons the mains switch was pulled down by a cable when pressing the off button the cable was released and the switch was pulled back to the off position by a spring .it could be something as simple as that and worth a quick look before disturbing anything else

15th Feb 2019, 10:12 pm	#53
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Grundig Mandello no power That sounds very likely. The OP seems to be adverse to taking readings at the actual switch, preferring instead to do so at the 6 way plug and socket. This makes me think the switch may be difficult to identify or access. At least temporarily bridging the switch will show whether it's the only fault. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

16th Feb 2019, 1:46 pm	#54
Stephen82 Retired Dormant Member Join Date: Jun 2015 Location: St Clement, Jersey. Channel Islands. Posts: 40	Re: Grundig Mandello no power Hi Graham I've just bridged the power supply and the radiogram came on but I have no radio signal from the fm side of the radio at all would this be a separate issue Thanks Stephen Last edited by Stephen82; 16th Feb 2019 at 1:54 pm.

16th Feb 2019, 2:00 pm	#55
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Grundig Mandello no power No FM is a separate issue which was discussed in this thread:- https://www.vintage-radio.net/forum/...d.php?t=152849 I suggest you try to find out why the OFF/ON switch isn't working. Post #52 may give a clue. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

6th Apr 2019, 2:05 pm	#56
Stephen82 Retired Dormant Member Join Date: Jun 2015 Location: St Clement, Jersey. Channel Islands. Posts: 40	Re: Grundig Mandello no power Hi Guys It's been a while i know but i thought i update with what's going on. Firstly i have now fixed the FM issue which was indeed the ECC85, so this clearly has a lot to do with whether FM radio even works. Now to the other issue of the power supply. I have removed the chassis and as far as i can tell the off switch is working ok, so as to why it doesn't turn on/off with the buttons I'm still not to sure but i will keep investigating. I also am hoping someone could possibly tell me which tape deck is meant to go with this Mandello e/gb as i have tried looking this up but seem to get conflicting information about whether it is a reel to reel or a cassette type player so a model number would be most helpful Take Care Stephen

6th Apr 2019, 5:36 pm	#57
Edward Huggins Dekatron Join Date: Sep 2015 Location: Southwold, Suffolk, UK. Posts: 8,327	Re: Grundig Mandello no power You can use either a Reel-to-Reel or a Cassette deck. On your Mandello there should be a 5 pin DIN socket for the tape record and playback functions - using just one 5 pin DIN lead. __________________ Edward.