HMV 2210 Tape recorder - UK Vintage Radio Repair and Restoration Discussion Forum

bennybrc · 4th Jul 2012, 10:08 pm

Hi all
I have just been given a hmv tape recorder which is a 4 track 2 speed type incorparating a thorn tape drive which is in fantastic condition.
It does need some electrical work though
some of the old hunts capacitors have swelled up and want to change them but I cant seem to find replacements.
Im after .01uf .005uf 50uf 8uf and 0.005uf
Was wondering if someone could tell me what modern replacements I could use and also some of them have dc working on them,so do the new capacitors have to be dc working aswell? I want to be sure

Many thanks in advance
Ben

Michael Maurice · 4th Jul 2012, 11:33 pm

Hi Ben and welcome to the forum.

The capacitors are:

0.01uF = 10nF polyester
0.005uF = 4.7nF (nearest value) polyester
50uF use 47uF electrolytic
8uF use 10uF electrolytic

Working voltage: for electrolytics is as stated on the can or nearest voltage above that ie 325V use 350V for polyesters 400V or 630V will do.

I hope this helps.

bennybrc · 5th Jul 2012, 10:43 am

Hi

thanks for the info.
One other qiestion I forgot to ask......
There is one plessey electrolytic that has not got a +or-on it but one of the tags is connected to the top of the capacitor then to the circuit board,am I right in thinking that this is negative? There is also a hunts electrolytic in there which is connected the same way but this one is coloured in red at the top with a + at the top where the top of the plessey is plain at the top.
Hope this makes sense
Best regards
Ben

Tim · 5th Jul 2012, 1:43 pm

If the electrolytic has a single tag/ wire on each end the one connected DIRECTLY to the body is the -ve. The +ve is usually the end with a wire or tag in mounted in an inulating material, which is generally the same end as the crimp. If there is more than one wire coming out of one end, there will usually be a marking scheme on the can, label or sometimes the tag.
In a tape recorder, I would think the body of any electrolytic is almost certainly connected to -ve.

Welsh Anorak · 5th Jul 2012, 2:02 pm

Hi
These capacitors came at a time when manufacturers were unsure whether to mark the positive (old convention) or the negative (current convention). I'd be guided by your instincts here - as Tim suggests it's very likely the negative will be connected to chassis and would probably be earthed to the same point as your Hunts capacitor.
Otherwise it's not difficult to find the diagram - try Paul's link at the top of the page.
Glyn

bennybrc · 5th Jul 2012, 5:02 pm

Hi

If you send me you're email address then I can send you a picture of the caps as im doing this on a mobile and I cant upload from here lol.
Sorry if im being a pain but I want to do it right
Ben

bennybrc · 11th Jul 2012, 4:05 pm

Hello
Could anyone tell me what I could use as an alternative to a .01uf capacitor.
I do have a few 0.1uf but not sure if these will be ok
Ben

julie_m · 11th Jul 2012, 4:30 pm

10nF is the same amount of capacitance (same as 100 mm. == 10 cm. == 0.1 m; there are 1000 nano-anythings in a micro-one).

For some unknown reason, people used to have an aversion to nanofarads in the past.

bennybrc · 18th Jul 2012, 7:12 pm

Hi all

Could someone tell me what replacements I could use for a 350uf 35v capacitor electrolytic can as I cant seem to be able to find any!
Also could someone confirm that a 0.047uf is fine as a replacement for a 0.05uf and that a 0.0047uf is fine as a replacement for a .005uf

Best regards
Ben

'LIVEWIRE?' · 18th Jul 2012, 7:49 pm

350uf is almost certainly an unobtainable value now. In most cases replacing with a 470uf will be fine(though I'm not familiar with the tape recorder in question) You MAY be able to get a 330uf. 0.047uf is standard replacement for 0.05uf,, likewise 0.0047 for 0.005uf. As with resistors, there is now, & has been for many years, a range of 'preferred values' in which capacitors are produced. These are 1, 2.2, 4.7, 6.8(less commonly seen) 10, and their multiples. Units are pf(picofarads)nf(nanofarads)uf(microfarads)

bennybrc · 28th Jul 2012, 9:12 pm

Hi
I have just found an 04 uf capacitor and wondered if its a .004uf.
If it is then can I replace it with a .005uf?
The recorder is coming along fine! 11 capacitors have been replaced and it doesnt crackle anymore and also have volume! Its not very loud though.
Many thanks for all the help so far
Ben

'LIVEWIRE?' · 29th Jul 2012, 11:35 am

I would expect an 04uf to be 0.04(replace with 0.047)uf, rather than 0.005uf.

bennybrc · 29th Jul 2012, 12:05 pm

Hi again
I have just looked inside my fergerson tape recorder which is more or less the same as the one im restoring and is also infested with hunts capacitors!
The 04uf in question is a .04uf so would it hurt to put in .005uf instead?
Ben

crackle · 29th Jul 2012, 5:22 pm

Hello Ben
For .04uf use a .047uf capacitor.
Mike

bennybrc · 29th Jul 2012, 10:22 pm

Thanks mike, you're a star!
Ben

bennybrc · 14th Sep 2012, 2:06 pm

Hi
Its been a while as work is so manic!
Would you be able to tell me what replacement to use for a .02uf cap? Its a hunts as affair and is chipped on one side so it, needs replacing!
Best regards

julie_m · 14th Sep 2012, 3:28 pm

0.02 µF is the same as 20 nF. The nearest preferred value would be 22nF. It should be rated for an equal or higher voltage.

4th Jul 2012, 10:08 pm	#1
bennybrc Pentode Join Date: Jun 2012 Location: Portsmouth, Hampshire, UK. Posts: 206	HMV 2210 Tape recorder Hi all I have just been given a hmv tape recorder which is a 4 track 2 speed type incorparating a thorn tape drive which is in fantastic condition. It does need some electrical work though some of the old hunts capacitors have swelled up and want to change them but I cant seem to find replacements. Im after .01uf .005uf 50uf 8uf and 0.005uf Was wondering if someone could tell me what modern replacements I could use and also some of them have dc working on them,so do the new capacitors have to be dc working aswell? I want to be sure Many thanks in advance Ben

4th Jul 2012, 11:33 pm	#2
Michael Maurice Moderator Join Date: Feb 2006 Location: Wembley, Middlesex Posts: 7,225	Re: HMV 2210 Tape recorder Hi Ben and welcome to the forum. The capacitors are: 0.01uF = 10nF polyester 0.005uF = 4.7nF (nearest value) polyester 50uF use 47uF electrolytic 8uF use 10uF electrolytic Working voltage: for electrolytics is as stated on the can or nearest voltage above that ie 325V use 350V for polyesters 400V or 630V will do. I hope this helps. __________________ Forum Moderator http://www.michaelmauricerepairs.co.uk/

5th Jul 2012, 10:43 am	#3
bennybrc Pentode Join Date: Jun 2012 Location: Portsmouth, Hampshire, UK. Posts: 206	Re: HMV 2210 Tape recorder Hi thanks for the info. One other qiestion I forgot to ask...... There is one plessey electrolytic that has not got a +or-on it but one of the tags is connected to the top of the capacitor then to the circuit board,am I right in thinking that this is negative? There is also a hunts electrolytic in there which is connected the same way but this one is coloured in red at the top with a + at the top where the top of the plessey is plain at the top. Hope this makes sense Best regards Ben

5th Jul 2012, 1:43 pm	#4
Tim Dekatron Join Date: Jan 2003 Location: Bradford on Avon, Wiltshire, UK. Posts: 3,310	Re: HMV 2210 Tape recorder If the electrolytic has a single tag/ wire on each end the one connected DIRECTLY to the body is the -ve. The +ve is usually the end with a wire or tag in mounted in an inulating material, which is generally the same end as the crimp. If there is more than one wire coming out of one end, there will usually be a marking scheme on the can, label or sometimes the tag. In a tape recorder, I would think the body of any electrolytic is almost certainly connected to -ve. __________________ "Nothing is as dangerous as being too modern;one is apt to grow old fashioned quite suddenly."

5th Jul 2012, 2:02 pm	#5
Welsh Anorak Dekatron Join Date: Apr 2005 Location: North Wales, UK. Posts: 6,928	Re: HMV 2210 Tape recorder Hi These capacitors came at a time when manufacturers were unsure whether to mark the positive (old convention) or the negative (current convention). I'd be guided by your instincts here - as Tim suggests it's very likely the negative will be connected to chassis and would probably be earthed to the same point as your Hunts capacitor. Otherwise it's not difficult to find the diagram - try Paul's link at the top of the page. Glyn

5th Jul 2012, 5:02 pm	#6
bennybrc Pentode Join Date: Jun 2012 Location: Portsmouth, Hampshire, UK. Posts: 206	Re: HMV 2210 Tape recorder Hi If you send me you're email address then I can send you a picture of the caps as im doing this on a mobile and I cant upload from here lol. Sorry if im being a pain but I want to do it right Ben

11th Jul 2012, 4:05 pm	#7
bennybrc Pentode Join Date: Jun 2012 Location: Portsmouth, Hampshire, UK. Posts: 206	Re: HMV 2210 Tape recorder Hello Could anyone tell me what I could use as an alternative to a .01uf capacitor. I do have a few 0.1uf but not sure if these will be ok Ben

11th Jul 2012, 4:30 pm	#8
julie_m Dekatron Join Date: May 2008 Location: Derby, UK. Posts: 7,735	Re: HMV 2210 Tape recorder 10nF is the same amount of capacitance (same as 100 mm. == 10 cm. == 0.1 m; there are 1000 nano-anythings in a micro-one). For some unknown reason, people used to have an aversion to nanofarads in the past. __________________ If I have seen further than others, it is because I was standing on a pile of failed experiments.

18th Jul 2012, 7:12 pm	#9
bennybrc Pentode Join Date: Jun 2012 Location: Portsmouth, Hampshire, UK. Posts: 206	Re: HMV 2210 Tape recorder Hi all Could someone tell me what replacements I could use for a 350uf 35v capacitor electrolytic can as I cant seem to be able to find any! Also could someone confirm that a 0.047uf is fine as a replacement for a 0.05uf and that a 0.0047uf is fine as a replacement for a .005uf Best regards Ben Last edited by bennybrc; 18th Jul 2012 at 7:13 pm. Reason: missed a word out

18th Jul 2012, 7:49 pm	#10
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	Re: HMV 2210 Tape recorder 350uf is almost certainly an unobtainable value now. In most cases replacing with a 470uf will be fine(though I'm not familiar with the tape recorder in question) You MAY be able to get a 330uf. 0.047uf is standard replacement for 0.05uf,, likewise 0.0047 for 0.005uf. As with resistors, there is now, & has been for many years, a range of 'preferred values' in which capacitors are produced. These are 1, 2.2, 4.7, 6.8(less commonly seen) 10, and their multiples. Units are pf(picofarads)nf(nanofarads)uf(microfarads)

28th Jul 2012, 9:12 pm	#11
bennybrc Pentode Join Date: Jun 2012 Location: Portsmouth, Hampshire, UK. Posts: 206	Re: HMV 2210 Tape recorder Hi I have just found an 04 uf capacitor and wondered if its a .004uf. If it is then can I replace it with a .005uf? The recorder is coming along fine! 11 capacitors have been replaced and it doesnt crackle anymore and also have volume! Its not very loud though. Many thanks for all the help so far Ben

29th Jul 2012, 11:35 am	#12
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	Re: HMV 2210 Tape recorder I would expect an 04uf to be 0.04(replace with 0.047)uf, rather than 0.005uf.

29th Jul 2012, 12:05 pm	#13
bennybrc Pentode Join Date: Jun 2012 Location: Portsmouth, Hampshire, UK. Posts: 206	Re: HMV 2210 Tape recorder Hi again I have just looked inside my fergerson tape recorder which is more or less the same as the one im restoring and is also infested with hunts capacitors! The 04uf in question is a .04uf so would it hurt to put in .005uf instead? Ben

29th Jul 2012, 5:22 pm	#14
crackle Rest in Peace Join Date: Mar 2011 Location: Basildon, Essex, UK. Posts: 4,100	Re: HMV 2210 Tape recorder Hello Ben For .04uf use a .047uf capacitor. Mike

29th Jul 2012, 10:22 pm	#15
bennybrc Pentode Join Date: Jun 2012 Location: Portsmouth, Hampshire, UK. Posts: 206	Re: HMV 2210 Tape recorder Thanks mike, you're a star! Ben

14th Sep 2012, 2:06 pm	#16
bennybrc Pentode Join Date: Jun 2012 Location: Portsmouth, Hampshire, UK. Posts: 206	Re: HMV 2210 Tape recorder Hi Its been a while as work is so manic! Would you be able to tell me what replacement to use for a .02uf cap? Its a hunts as affair and is chipped on one side so it, needs replacing! Best regards

14th Sep 2012, 3:28 pm	#17
julie_m Dekatron Join Date: May 2008 Location: Derby, UK. Posts: 7,735	Re: HMV 2210 Tape recorder 0.02 µF is the same as 20 nF. The nearest preferred value would be 22nF. It should be rated for an equal or higher voltage. __________________ If I have seen further than others, it is because I was standing on a pile of failed experiments.