Grundig Yacht Boy 209. - UK Vintage Radio Repair and Restoration Discussion Forum

AD360 Rob · 17th Dec 2019, 10:22 pm

Just got one of these rather cheaply from a radiophile auction recently, it's giving dead set symptoms but does pop when switched on. The receiver circuits do appear to be working as I have demodulated audio on the base of T7 but nothing further down the line. T7 and T8 have been removed and tested and both check out fine. I have the servicing info from Paul's DVD but the circuit diagram is far too small for me to be able to read and zooming in makes everything somewhat pixellated /blurred. Does anyone have a better resolution scan of the cct diagram prefferably with transistor data (voltages etc)?

Cheers
Rob

poppydog · 17th Dec 2019, 11:02 pm

Try here-

https://www.radiomuseum.org/r/grundi...t_boy_209.html

ronbryan · 17th Dec 2019, 11:10 pm

It is always a good idea to clean the switches on a Grundig transistor radio. Some switch functions are 'daisy chained' along the switch bank.

Ron

AD360 Rob · 18th Dec 2019, 8:14 am

Switches have been thoroughly cleaned Ron . I'm not a radiomuseum member , perhaps I need to join it. Sorry about the title mis-spelling too, can't edit it, hopefully a moderator will correct this for me

crackle · 18th Dec 2019, 8:31 am

I tried posting the AF amp circuit here but the forum software reduces the image too much so it is unreadable.
You can download the schematic from RM as a guest, just click on the small image on the right then on the large image on the left, then fill in your details. you will need to download each page separately. the limit is 3 per day I think.
Mike

ps
here it is as a pdf
209 af.pdf

Freya · 18th Dec 2019, 9:33 am

Try https://elektrotanya.com/grundig_yac.../download.html

Andrewausfa · 18th Dec 2019, 10:29 am

Rob,

There are three 1000uF electrolytics in the amp section, check those haven't shorted.

Andrew

17th Dec 2019, 10:22 pm	#1
AD360 Rob Hexode Join Date: Jun 2012 Location: Chester, Cheshire, UK. Posts: 421	Grundig Yacht Boy 209. Just got one of these rather cheaply from a radiophile auction recently, it's giving dead set symptoms but does pop when switched on. The receiver circuits do appear to be working as I have demodulated audio on the base of T7 but nothing further down the line. T7 and T8 have been removed and tested and both check out fine. I have the servicing info from Paul's DVD but the circuit diagram is far too small for me to be able to read and zooming in makes everything somewhat pixellated /blurred. Does anyone have a better resolution scan of the cct diagram prefferably with transistor data (voltages etc)? Cheers Rob

17th Dec 2019, 11:02 pm	#2
poppydog Banned Join Date: Oct 2015 Location: Cornwall, UK. Posts: 849	Re: Grindig Yacht boy 209 Try here- https://www.radiomuseum.org/r/grundi...t_boy_209.html

17th Dec 2019, 11:10 pm	#3
ronbryan Octode Join Date: Jan 2003 Location: Guildford, Surrey, UK. Posts: 1,959	Re: Grindig Yacht boy 209 It is always a good idea to clean the switches on a Grundig transistor radio. Some switch functions are 'daisy chained' along the switch bank. Ron

18th Dec 2019, 8:14 am	#4
AD360 Rob Hexode Join Date: Jun 2012 Location: Chester, Cheshire, UK. Posts: 421	Re: Grindig Yacht boy 209 Switches have been thoroughly cleaned Ron . I'm not a radiomuseum member , perhaps I need to join it. Sorry about the title mis-spelling too, can't edit it, hopefully a moderator will correct this for me

18th Dec 2019, 8:31 am	#5
crackle Rest in Peace Join Date: Mar 2011 Location: Basildon, Essex, UK. Posts: 4,100	Re: Grindig Yacht boy 209 I tried posting the AF amp circuit here but the forum software reduces the image too much so it is unreadable. You can download the schematic from RM as a guest, just click on the small image on the right then on the large image on the left, then fill in your details. you will need to download each page separately. the limit is 3 per day I think. Mike ps here it is as a pdf 209 af.pdf Last edited by crackle; 18th Dec 2019 at 8:48 am.

18th Dec 2019, 9:33 am	#6
Freya Octode Join Date: Jan 2009 Location: Falmouth, Cornwall, UK. Posts: 1,989	Re: Grundig Yacht boy 209 Try https://elektrotanya.com/grundig_yac.../download.html __________________ Stephen _________"It`s only an old telly" ___

18th Dec 2019, 10:29 am	#7
Andrewausfa Octode Join Date: Dec 2010 Location: St Ives, Cambridgeshire, UK. Posts: 1,180	Re: Grundig Yacht Boy 209. Rob, There are three 1000uF electrolytics in the amp section, check those haven't shorted. Andrew __________________ Invisible airwaves crackle with life. Or they should do. BVWS Member