Fit stylus to Sonotone 8T4A - UK Vintage Radio Repair and Restoration Discussion Forum

riwanicki · 10th Nov 2019, 9:17 am

Hello
Please could I have some instructions (preferably a video) on how to fit a new stylus for my Bush SRP-31D?

It has the original cartridge, Sonotone 8T4A.
I am familiar with the Audio Technica AT95E and other modern cartridges, but I am a bit puzzled how to get this one out (and I don't want to break it).

Thank you very much.
Richard

Audio1950 · 10th Nov 2019, 10:50 am

The stylus is held in the cartridge by a black "U" shaped spring. Very gently open the open end of the spring with a fingernail, just enough to be able to slide the stylus out with the other hand. The new stylus can be held against the open end of the spring and gently pushed in until it clicks into place.

riwanicki · 10th Nov 2019, 12:15 pm

Thank you for your reply - I'll give it a go, it's somewhat fiddly.

ben · 10th Nov 2019, 7:55 pm

I posted a diagram on this fairly recently, search the forum and see if it's there.

John10b · 10th Nov 2019, 8:05 pm

I thought it might be of interest to see the inside of a Sonotone 8T cartridge.
I have inserted some pictures. I should say the Cartridge was faulty, see how badly the pins are corroded.

John10b · 10th Nov 2019, 8:08 pm

I should have added the picture of the corroded pins.

Lloyd 1985 · 10th Nov 2019, 10:48 pm

I’ve got one of those that had been snapped in half! I managed to rebuild it carefully and it actually sounds really good! It’s fitted to a Bush SRP31D.

Regards
Lloyd

riwanicki · 11th Nov 2019, 8:29 am

Looks like you have a similar TV to me Lloyd 1985. Actually, the Mitsubishi TV is how I came upon this forum (this thread):
https://www.vintage-radio.net/forum/...ad.php?t=60791
And the immortal quote on that thread:
'Cracking sets, they just don't go wrong!'

It still works 100%, I have my Freeview box connected via a VCR. My pleasure is not shared by other family members.

Thank you for the help with the stylus and I've ordered a new one from Musonic (now I can remove the old one).

riwanicki · 16th Nov 2019, 10:00 am

Fitted it using your instructions, sounds great.
Not so fiddly once you've done it once.
Thank you for your help.

10th Nov 2019, 9:17 am	#1
riwanicki Diode Join Date: Nov 2019 Location: Stroud, Gloucestershire, UK. Posts: 6	Fit stylus to Sonotone 8T4A Hello Please could I have some instructions (preferably a video) on how to fit a new stylus for my Bush SRP-31D? It has the original cartridge, Sonotone 8T4A. I am familiar with the Audio Technica AT95E and other modern cartridges, but I am a bit puzzled how to get this one out (and I don't want to break it). Thank you very much. Richard

10th Nov 2019, 10:50 am	#2
Audio1950 Dekatron Join Date: Nov 2008 Location: Whittlesey, near Peterborough, Cambridgeshire, UK. Posts: 3,761	Re: Fit stylus to Sonotone 8T4A The stylus is held in the cartridge by a black "U" shaped spring. Very gently open the open end of the spring with a fingernail, just enough to be able to slide the stylus out with the other hand. The new stylus can be held against the open end of the spring and gently pushed in until it clicks into place.

10th Nov 2019, 12:15 pm	#3
riwanicki Diode Join Date: Nov 2019 Location: Stroud, Gloucestershire, UK. Posts: 6	Re: Fit stylus to Sonotone 8T4A Thank you for your reply - I'll give it a go, it's somewhat fiddly.

10th Nov 2019, 7:55 pm	#4
ben Dekatron Join Date: Aug 2006 Location: Madrid, Spain / Wirral, UK Posts: 7,498	Re: Fit stylus to Sonotone 8T4A I posted a diagram on this fairly recently, search the forum and see if it's there. __________________ Regards, Ben.

10th Nov 2019, 8:05 pm	#5
John10b Nonode Join Date: Nov 2016 Location: Aberaeron, Ceredigion, Wales, UK. Posts: 2,884	Re: Fit stylus to Sonotone 8T4A I thought it might be of interest to see the inside of a Sonotone 8T cartridge. I have inserted some pictures. I should say the Cartridge was faulty, see how badly the pins are corroded. Attached Thumbnails

10th Nov 2019, 8:08 pm	#6
John10b Nonode Join Date: Nov 2016 Location: Aberaeron, Ceredigion, Wales, UK. Posts: 2,884	Re: Fit stylus to Sonotone 8T4A I should have added the picture of the corroded pins. Attached Thumbnails

10th Nov 2019, 10:48 pm	#7
Lloyd 1985 Nonode Join Date: Jun 2008 Location: Coningsby, Lincolnshire, UK. Posts: 2,819	Re: Fit stylus to Sonotone 8T4A I’ve got one of those that had been snapped in half! I managed to rebuild it carefully and it actually sounds really good! It’s fitted to a Bush SRP31D. Regards Lloyd

11th Nov 2019, 8:29 am	#8
riwanicki Diode Join Date: Nov 2019 Location: Stroud, Gloucestershire, UK. Posts: 6	Re: Fit stylus to Sonotone 8T4A Looks like you have a similar TV to me Lloyd 1985. Actually, the Mitsubishi TV is how I came upon this forum (this thread): https://www.vintage-radio.net/forum/...ad.php?t=60791 And the immortal quote on that thread: 'Cracking sets, they just don't go wrong!' It still works 100%, I have my Freeview box connected via a VCR. My pleasure is not shared by other family members. Thank you for the help with the stylus and I've ordered a new one from Musonic (now I can remove the old one).

16th Nov 2019, 10:00 am	#9
riwanicki Diode Join Date: Nov 2019 Location: Stroud, Gloucestershire, UK. Posts: 6	Re: Fit stylus to Sonotone 8T4A Fitted it using your instructions, sounds great. Not so fiddly once you've done it once. Thank you for your help.