Marconiphone Radio - UK Vintage Radio Repair and Restoration Discussion Forum

hillwalker · 30th May 2020, 7:38 pm

Good Evening All

Just thought I'd share some pictures of a MARCONIPHONE Radio given to me by a relative 15+ years ago, I have only just finally dug it out to enable myself to post a few pictures on here.

MODEL 4174
2942

(Prior to me creating this thread, I was aware after doing a search somebody else has posted a thread previously on this model)

vinrads · 30th May 2020, 10:49 pm

I wonder if the circuit board was made for a vhf version as well. Mick.

crackle · 31st May 2020, 6:34 am

If it is not working or draining the battery fast, then suspect those "Callins" electrolytic capacitors.
They are famous for being leaky, in fact I have often seen them where the plastic covers have actually popped off.

Mike

FERNSEH · 31st May 2020, 10:41 am

Quote:

Originally Posted by vinrads

I wonder if the circuit board was made for a vhf version as well. Mick.

The Ultra model 6175 for example. Compare the component layouts of the AM/FM receiver and the AM only Marconi.

DFWB.

vinrads · 1st Jun 2020, 9:25 am

Interesting I see on the AM one the vhf switch is used for the on off , I guess the on off switch must be on the vol/ tone control .on the vhf one . Mick.

FERNSEH · 1st Jun 2020, 11:07 am

"I guess the on off switch must be on the vol/ tone control .on the vhf one . Mick."
Indeed it is. It's marked as S4 in the model 6175 diagrams.
Information for the AM only Marconi 4174 and Ultra 6174 can be found in the 1972/73 Radio and television servicing book.

DFWB.

AC/HL · 1st Jun 2020, 1:35 pm

The PCB is equipped for a fourth push switch, as is the cabinet.

30th May 2020, 7:38 pm	#1
hillwalker Triode Join Date: Feb 2020 Location: Caernarfon, Gwynedd, Wales, UK. Posts: 18	Marconiphone Radio Good Evening All Just thought I'd share some pictures of a MARCONIPHONE Radio given to me by a relative 15+ years ago, I have only just finally dug it out to enable myself to post a few pictures on here. MODEL 4174 2942 (Prior to me creating this thread, I was aware after doing a search somebody else has posted a thread previously on this model) Attached Thumbnails

30th May 2020, 10:49 pm	#2
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,762	Re: Marconiphone Radio I wonder if the circuit board was made for a vhf version as well. Mick.

31st May 2020, 6:34 am	#3
crackle Rest in Peace Join Date: Mar 2011 Location: Basildon, Essex, UK. Posts: 4,100	Re: Marconiphone Radio If it is not working or draining the battery fast, then suspect those "Callins" electrolytic capacitors. They are famous for being leaky, in fact I have often seen them where the plastic covers have actually popped off. Mike

1st Jun 2020, 9:25 am	#5
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,762	Re: Marconiphone Radio Interesting I see on the AM one the vhf switch is used for the on off , I guess the on off switch must be on the vol/ tone control .on the vhf one . Mick.

1st Jun 2020, 11:07 am	#6
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Marconiphone Radio "I guess the on off switch must be on the vol/ tone control .on the vhf one . Mick." Indeed it is. It's marked as S4 in the model 6175 diagrams. Information for the AM only Marconi 4174 and Ultra 6174 can be found in the 1972/73 Radio and television servicing book. DFWB. Attached Thumbnails

1st Jun 2020, 1:35 pm	#7
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: Marconiphone Radio The PCB is equipped for a fourth push switch, as is the cabinet.