Goodmans Module Ninety - UK Vintage Radio Repair and Restoration Discussion Forum

Radio Tech · 13th Mar 2018, 9:12 pm

Hi Folks

I came across one of these units by shear luck as there was a house clearance taking place and the said item was going to be thrown in the skip. I just wonder if someone has restored one of these before and where did they obtain the service manual. I have removed the casing only to observe the two main smoothing caps have had it as they are at the point of bursting, this is obviously before I apply power to it. I would also like to know as it has a 4 speaker output and I only have two speakers to plug in to it can the other two be switched out or dummy loaded.

Best wishes

Ken

RojDW48 · 14th Mar 2018, 12:53 am

Info here - https://www.vintage-radio.net/forum/...d.php?t=132873 - I had a module 80 briefly but I didn't like it much. IIRC on the 80 the extra speaker outputs were for 'rear' speakers, rather like Dynatron's fanciful 'quadrosound' system - no inductive load required for the secondary speakers.

crackle · 14th Mar 2018, 7:42 am

Ken
This may be a better link for the service information https://www.vintage-radio.net/forum/...4&postcount=20
Or HiFi Engine, but you need to join (its free) https://www.hifiengine.com/manual_li...odule-90.shtml
Mike

Nickthedentist · 14th Mar 2018, 8:31 am

I think the extra LS speaker sockets are just for an optional, extra pair of speakers in another room. So, for example, you could listen to music in your living room, in the kitchen, or both. Just leave the unused sockets unterminated.

Radio Tech · 15th Mar 2018, 3:22 pm

Thank you everyone for your input, will let you know the progress on this Tuner amp.

Ken

Radio Tech · 16th Mar 2018, 8:14 pm

Hi Folks

I have the amplifier working in this tuner/amp but for some odd reason there is no response from the tuner side either on FM or Med wave, I am a bit suspicious of some modification that seems to have been done (see picture) you will note that the leg of the collector is strung on a red wire link which I think is bypassing something.

Ken

andrewn · 16th Mar 2018, 10:58 pm

My Dad had one of these for many years. I remember having to replace a small bridge rectifier that had gone short circuit. I think it caused a fuse to blow but the unit wasn't completely dead. I think it was near the tuner circuitry and was an odd looking device.
It's fine to use the module 90 with only one pair of speakers.

vidjoman · 17th Mar 2018, 9:48 am

Although it's about 40 years since I last saw one of these I do have a vague memory of that red wire link shown in your picture as being original. You will have to check it against the circuit diagram, but that may be wrong/and or, the PCB is wrong.

Radio Tech · 17th Mar 2018, 1:13 pm

Thanks everyone for their input, I will endeavour to progress with it, and Andrew, you could be right about that bridge, as the voltages around seem a bit odd, might even end up checking to see if the LO is running.

Ken

stevehertz · 17th Mar 2018, 5:10 pm

I'd say that that red wire is original. BTW I had a Module 90 that I got from the staff sales shop when I worked at Thorn Automation in the 70s. It was a lovely unit and was well reviewed by Hifi Choice, that's the pukka hifi equipment test book, not the later magazine. Mine was white and came with matching white Lenco deck and Goodmans Minister speakers.

13th Mar 2018, 9:12 pm	#1
Radio Tech Nonode Join Date: Dec 2012 Location: Bocking, near Braintree, Essex, UK. Posts: 2,071	Goodmans Module Ninety Hi Folks I came across one of these units by shear luck as there was a house clearance taking place and the said item was going to be thrown in the skip. I just wonder if someone has restored one of these before and where did they obtain the service manual. I have removed the casing only to observe the two main smoothing caps have had it as they are at the point of bursting, this is obviously before I apply power to it. I would also like to know as it has a 4 speaker output and I only have two speakers to plug in to it can the other two be switched out or dummy loaded. Best wishes Ken

14th Mar 2018, 12:53 am	#2
RojDW48 Nonode Join Date: Jun 2014 Location: Bristol, UK. Posts: 2,074	Re: Goodmans Module Ninety Info here - https://www.vintage-radio.net/forum/...d.php?t=132873 - I had a module 80 briefly but I didn't like it much. IIRC on the 80 the extra speaker outputs were for 'rear' speakers, rather like Dynatron's fanciful 'quadrosound' system - no inductive load required for the secondary speakers. __________________ '....don't go mistaking Paradise for that home across the road!' (Bob Dylan)

14th Mar 2018, 7:42 am	#3
crackle Rest in Peace Join Date: Mar 2011 Location: Basildon, Essex, UK. Posts: 4,100	Re: Goodmans Module Ninety Ken This may be a better link for the service information https://www.vintage-radio.net/forum/...4&postcount=20 Or HiFi Engine, but you need to join (its free) https://www.hifiengine.com/manual_li...odule-90.shtml Mike Last edited by crackle; 14th Mar 2018 at 7:49 am.

14th Mar 2018, 8:31 am	#4
Nickthedentist Dekatron Join Date: Jan 2005 Location: Oxford, UK. Posts: 17,844	Re: Goodmans Module Ninety I think the extra LS speaker sockets are just for an optional, extra pair of speakers in another room. So, for example, you could listen to music in your living room, in the kitchen, or both. Just leave the unused sockets unterminated.

15th Mar 2018, 3:22 pm	#5
Radio Tech Nonode Join Date: Dec 2012 Location: Bocking, near Braintree, Essex, UK. Posts: 2,071	Re: Goodmans Module Ninety Thank you everyone for your input, will let you know the progress on this Tuner amp. Ken

16th Mar 2018, 8:14 pm	#6
Radio Tech Nonode Join Date: Dec 2012 Location: Bocking, near Braintree, Essex, UK. Posts: 2,071	Re: Goodmans Module Ninety Hi Folks I have the amplifier working in this tuner/amp but for some odd reason there is no response from the tuner side either on FM or Med wave, I am a bit suspicious of some modification that seems to have been done (see picture) you will note that the leg of the collector is strung on a red wire link which I think is bypassing something. Ken Attached Thumbnails

16th Mar 2018, 10:58 pm	#7
andrewn Pentode Join Date: Aug 2008 Location: Taunton, Somerset, UK. Posts: 135	Re: Goodmans Module Ninety My Dad had one of these for many years. I remember having to replace a small bridge rectifier that had gone short circuit. I think it caused a fuse to blow but the unit wasn't completely dead. I think it was near the tuner circuitry and was an odd looking device. It's fine to use the module 90 with only one pair of speakers.

17th Mar 2018, 9:48 am	#8
vidjoman Dekatron Join Date: Jun 2013 Location: East Sussex, UK. Posts: 3,326	Re: Goodmans Module Ninety Although it's about 40 years since I last saw one of these I do have a vague memory of that red wire link shown in your picture as being original. You will have to check it against the circuit diagram, but that may be wrong/and or, the PCB is wrong.

17th Mar 2018, 1:13 pm	#9
Radio Tech Nonode Join Date: Dec 2012 Location: Bocking, near Braintree, Essex, UK. Posts: 2,071	Re: Goodmans Module Ninety Thanks everyone for their input, I will endeavour to progress with it, and Andrew, you could be right about that bridge, as the voltages around seem a bit odd, might even end up checking to see if the LO is running. Ken

17th Mar 2018, 5:10 pm	#10
stevehertz Dekatron Join Date: Sep 2011 Location: Rugeley, Staffordshire, UK. Posts: 8,831	Re: Goodmans Module Ninety I'd say that that red wire is original. BTW I had a Module 90 that I got from the staff sales shop when I worked at Thorn Automation in the 70s. It was a lovely unit and was well reviewed by Hifi Choice, that's the pukka hifi equipment test book, not the later magazine. Mine was white and came with matching white Lenco deck and Goodmans Minister speakers. __________________ A digital radio is the latest thing, but a vintage wireless is forever..