Grundig tk141 - UK Vintage Radio Repair and Restoration Discussion Forum

brockencomb · 3rd Jun 2012, 6:17 pm

Hi
It was fine until I took the motor out for a clean, doen't work now, only very weakly on 120v. Checking round with the Avo it appears that one of the windings is o/c, if only I had left it alone, still i suppose it comes down to one question, has anyone got a spare motor they dont want. It's a shame as the rest of the machine is in good overall nick and very nice cosmetically.
When this sort of thing happens it makes you feel technically incompotent. Why didn't I leave it alone!

DOFFERY · 3rd Jun 2012, 6:28 pm

Why did you take the motor out, was it faulty before? Did you strip the motor ie. remove the lower bearing plate?

Colin.

Alan Stepney · 3rd Jun 2012, 6:36 pm

Is itthe same motor as in the TK140, I wonder?

brockencomb · 3rd Jun 2012, 9:42 pm

I took the motor out as there was a lot of dust and fluff around it, also the motor seemed fairly tight to me so I was going add a tiny drop machine oil, good intentions have worked in the past but not this time.

Steve_P · 3rd Jun 2012, 10:13 pm

Alan...

Yes, it is the same motor.

Cheers,

Steve P.

Alan Stepney · 4th Jun 2012, 8:17 am

As Steve has confirmed that it is the same motor, I can help.

I have a complete (but not fully working) TK140 that I had planned to take to the auction at WB in July.
(The motor is OK.)

Complete machine avilable for, say £3 if it is of any interest.
Collect from Harpenden, or if you arent attending, perhaps somene could collect from there on your behalf.

brockencomb · 4th Jun 2012, 11:46 am

Hi Alan
Thanks for your kind offer but it looks as if your too far away for me as it seems you live in Dorset, I live here in london and dont have transport.
Many thanks anyway.
Colin.

PS If only I had left the darn thing alone.

DOFFERY · 4th Jun 2012, 5:54 pm

Are you sure a winding is O/c & I would check this out before you embark further. A tight motor assembly of the type used in the 140 series can often be resolved by use of the "The Manchester screwdriver" gently all around the body of the motor without power.

Colin.

brockencomb · 5th Jun 2012, 12:56 pm

Thanks
The Manchester Screwdriver is a new one on me but will give it a go next time I'm out in the workshop.

julie_m · 6th Jun 2012, 12:03 am

I've heard "Birmingham screwdriver" and in Derby, "Ilkeston screwdriver"!

I suspect there are a good many regional variations .....

brockencomb · 11th Jun 2012, 7:46 pm

Update on TK141
Well it was the motor primary that was o/c, the copper wire had broken at the solder tag, difficult to see without my glasses on. I must have done it somehow when removing the motor, a classic case of clumsy sod syndrome, anyway its working well now, apart from the belts, guess that's another story, will keep you informed.

brockencomb · 16th Jun 2012, 10:17 am

All going well now after replacing belts. One question though, is it normal for the motor laminations to get quite hot after an hours use?

DOFFERY · 16th Jun 2012, 1:22 pm

They do run hot , have you resolved the tightness ?

Colin.

brockencomb · 16th Jun 2012, 1:38 pm

Yes, a little oil seems to have done the trick. i am quite surprised how good this machine is, seeing that it's a fairly simple and quite well made for a domestic machine. Wind and rewind isn't the fastest i ever seen though but it gets there.The condition of this machine is very good, possibly stored in the bottom of a wardrobe for many years, will post a picture when completed.

3rd Jun 2012, 6:17 pm	#1
brockencomb Retired Dormant Member Join Date: Mar 2010 Location: London, UK. Posts: 78	Grundig tk141 Hi It was fine until I took the motor out for a clean, doen't work now, only very weakly on 120v. Checking round with the Avo it appears that one of the windings is o/c, if only I had left it alone, still i suppose it comes down to one question, has anyone got a spare motor they dont want. It's a shame as the rest of the machine is in good overall nick and very nice cosmetically. When this sort of thing happens it makes you feel technically incompotent. Why didn't I leave it alone!

3rd Jun 2012, 6:28 pm	#2
DOFFERY Retired Dormant Member Join Date: Aug 2004 Location: Blackpool, Lancashire, UK. Posts: 1,488	Re: Grundig tk141 Why did you take the motor out, was it faulty before? Did you strip the motor ie. remove the lower bearing plate? Colin.

3rd Jun 2012, 6:36 pm	#3
Alan Stepney Rest in Peace Join Date: Feb 2008 Location: Dorset, UK. Posts: 947	Re: Grundig tk141 Is itthe same motor as in the TK140, I wonder?

3rd Jun 2012, 9:42 pm	#4
brockencomb Retired Dormant Member Join Date: Mar 2010 Location: London, UK. Posts: 78	Re: Grundig tk141 I took the motor out as there was a lot of dust and fluff around it, also the motor seemed fairly tight to me so I was going add a tiny drop machine oil, good intentions have worked in the past but not this time.

3rd Jun 2012, 10:13 pm	#5
Steve_P Dekatron Join Date: Sep 2003 Location: Bolton, Greater Manchester, UK. Posts: 6,644	Re: Grundig tk141 Alan... Yes, it is the same motor. Cheers, Steve P. __________________ If we've always had it, why is the Car Boot open? You're not sneaking another Old TV in are you...?

4th Jun 2012, 8:17 am	#6
Alan Stepney Rest in Peace Join Date: Feb 2008 Location: Dorset, UK. Posts: 947	Re: Grundig tk141 As Steve has confirmed that it is the same motor, I can help. I have a complete (but not fully working) TK140 that I had planned to take to the auction at WB in July. (The motor is OK.) Complete machine avilable for, say £3 if it is of any interest. Collect from Harpenden, or if you arent attending, perhaps somene could collect from there on your behalf.

4th Jun 2012, 11:46 am	#7
brockencomb Retired Dormant Member Join Date: Mar 2010 Location: London, UK. Posts: 78	Re: Grundig tk141 Hi Alan Thanks for your kind offer but it looks as if your too far away for me as it seems you live in Dorset, I live here in london and dont have transport. Many thanks anyway. Colin. PS If only I had left the darn thing alone.

4th Jun 2012, 5:54 pm	#8
DOFFERY Retired Dormant Member Join Date: Aug 2004 Location: Blackpool, Lancashire, UK. Posts: 1,488	Re: Grundig tk141 Are you sure a winding is O/c & I would check this out before you embark further. A tight motor assembly of the type used in the 140 series can often be resolved by use of the "The Manchester screwdriver" gently all around the body of the motor without power. Colin.

5th Jun 2012, 12:56 pm	#9
brockencomb Retired Dormant Member Join Date: Mar 2010 Location: London, UK. Posts: 78	Re: Grundig tk141 Thanks The Manchester Screwdriver is a new one on me but will give it a go next time I'm out in the workshop.

6th Jun 2012, 12:03 am	#10
julie_m Dekatron Join Date: May 2008 Location: Derby, UK. Posts: 7,735	Re: Grundig tk141 I've heard "Birmingham screwdriver" and in Derby, "Ilkeston screwdriver"! I suspect there are a good many regional variations ..... __________________ If I have seen further than others, it is because I was standing on a pile of failed experiments.

11th Jun 2012, 7:46 pm	#11
brockencomb Retired Dormant Member Join Date: Mar 2010 Location: London, UK. Posts: 78	Re: Grundig tk141 Update on TK141 Well it was the motor primary that was o/c, the copper wire had broken at the solder tag, difficult to see without my glasses on. I must have done it somehow when removing the motor, a classic case of clumsy sod syndrome, anyway its working well now, apart from the belts, guess that's another story, will keep you informed.

16th Jun 2012, 10:17 am	#12
brockencomb Retired Dormant Member Join Date: Mar 2010 Location: London, UK. Posts: 78	Re: Grundig tk141 All going well now after replacing belts. One question though, is it normal for the motor laminations to get quite hot after an hours use? Last edited by Mike Phelan; 16th Jun 2012 at 11:53 am. Reason: Made it a question.

16th Jun 2012, 1:22 pm	#13
DOFFERY Retired Dormant Member Join Date: Aug 2004 Location: Blackpool, Lancashire, UK. Posts: 1,488	Re: Grundig tk141 They do run hot , have you resolved the tightness ? Colin.

16th Jun 2012, 1:38 pm	#14
brockencomb Retired Dormant Member Join Date: Mar 2010 Location: London, UK. Posts: 78	Re: Grundig tk141 Yes, a little oil seems to have done the trick. i am quite surprised how good this machine is, seeing that it's a fairly simple and quite well made for a domestic machine. Wind and rewind isn't the fastest i ever seen though but it gets there.The condition of this machine is very good, possibly stored in the bottom of a wardrobe for many years, will post a picture when completed.