Pye Transistor MW+2SW Set - UK Vintage Radio Repair and Restoration Discussion Forum

Jon_G4MDC · 21st Jul 2022, 1:47 pm

I have just pulled this out of the shed and it's silent.

I have had it since the 1980s and it used to work well. Looks like a possible candidate for Tin whiskers. It has no ID plate.

If someone can identify it please then I will look for schematics before starting to repair.

Edward Huggins · 22nd Jul 2022, 8:40 am

My Colleague Alan Bednall designed this Export-Only Model in the mid-1960s. The input /output socketry was comprehensive and is a seldom seen feature. I'm sorry, I don't recall the model number.

Herald1360 · 22nd Jul 2022, 9:46 am

Looks like a close relative of this one:

https://www.radiomuseum.org/r/pye_unknown_am.html

Though that's not much help!

It's probably an export set (from the MW, 2SW band coverage) so data might be elusive. A search on the transistor lineup might suggest a similar UK model (LW, MW, SW perhaps) which could help with a "near enough" circuit.

Jon_G4MDC · 23rd Jul 2022, 9:45 am

Thanks both for your replies. That is the one. Interesting that it was intended for export.

It turned up at the church bazaar in Comberton near Cambridge around 1986 and I have had it ever since. It seemed to work well. I will look out for a similar set for a schematic or otherwise fix it from first principles.

I have haven't yet worked out how it comes to bits.

paulsherwin · 23rd Jul 2022, 10:13 am

Given that you found it in Cambridge, it may have 'escaped' from the factory or been sold off to staff.

21st Jul 2022, 1:47 pm	#1
Jon_G4MDC Nonode Join Date: Nov 2015 Location: Welwyn Garden City, Hertfordshire, UK. Posts: 2,015	Pye Transistor MW+2SW Set I have just pulled this out of the shed and it's silent. I have had it since the 1980s and it used to work well. Looks like a possible candidate for Tin whiskers. It has no ID plate. If someone can identify it please then I will look for schematics before starting to repair. Attached Thumbnails

22nd Jul 2022, 8:40 am	#2
Edward Huggins Dekatron Join Date: Sep 2015 Location: Southwold, Suffolk, UK. Posts: 8,340	Re: Pye Transistor MW+2SW Set My Colleague Alan Bednall designed this Export-Only Model in the mid-1960s. The input /output socketry was comprehensive and is a seldom seen feature. I'm sorry, I don't recall the model number. __________________ Edward.

22nd Jul 2022, 9:46 am	#3
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,536	Re: Pye Transistor MW+2SW Set Looks like a close relative of this one: https://www.radiomuseum.org/r/pye_unknown_am.html Though that's not much help! It's probably an export set (from the MW, 2SW band coverage) so data might be elusive. A search on the transistor lineup might suggest a similar UK model (LW, MW, SW perhaps) which could help with a "near enough" circuit. __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

23rd Jul 2022, 9:45 am	#4
Jon_G4MDC Nonode Join Date: Nov 2015 Location: Welwyn Garden City, Hertfordshire, UK. Posts: 2,015	Re: Pye Transistor MW+2SW Set Thanks both for your replies. That is the one. Interesting that it was intended for export. It turned up at the church bazaar in Comberton near Cambridge around 1986 and I have had it ever since. It seemed to work well. I will look out for a similar set for a schematic or otherwise fix it from first principles. I have haven't yet worked out how it comes to bits.

23rd Jul 2022, 10:13 am	#5
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,970	Re: Pye Transistor MW+2SW Set Given that you found it in Cambridge, it may have 'escaped' from the factory or been sold off to staff.