Two Unknown Early TV Chassis - UK Vintage Radio Repair and Restoration Discussion Forum

Gridiron · 6th Mar 2015, 11:22 am

Can anyone identify either of the chassis pictured, both from Radiophile auctions, the first one is mounted on a substantial framework. Sadly the tube looks to be unrecoverable as the most of the connecting wires are broken at the seal.
Thanks for your help, Mike.

FERNSEH · 6th Mar 2015, 11:53 am

A Dynatron perhaps? That firm used to construct their TVs around a substantial framework.
What ever it is, it deserves a full restoration and if possible a suitable cabinet to house it in.

DFWB.

mark pirate · 6th Mar 2015, 2:16 pm

Possibly Dynatron. the frame looks familiar, but they were usually finished in green hammerite and had a metal label attached. I would guess it dates from the late 40's.
It may be possible to recover the CRT using spring loaded terminals against the broken lead stubs.
I don't recognise the other chassis though.

Mark

FERNSEH · 6th Mar 2015, 3:38 pm

The second chassis could be a Pilot CV84. c 1953.

DFWB.

FERNSEH · 6th Mar 2015, 5:37 pm

Picture of another Pilot TV chassis.
This example has only one cross brace.

DFWB.

mark pirate · 7th Mar 2015, 9:24 pm

I have finally recognised the other chassis, it is a Murphy V150

I suddenly remember I have one on the roundtuit pile, I must drag it up on the bench soon.

Mark

Gridiron · 7th Mar 2015, 10:42 pm

Thanks for the replies and letting me know the identity of the second chassis, Markpirate. Fernseh's suggestion of the first chassis being a Dynatron could be a possibility, I did many years ago have a Dynatron TV23, the chassis of this one were supported by a framework which, if I remember correctly, was in typical cadmium plate as were the two chassis. The two remaining octal valves on the main chassis are an EL38 and an EL33 as used in the TV23 , the detached tube base is a duodecal, the label on the tube is missing.
I bought the TV23 from Gerry Wells and managed to get it working, the tube was a CRM121 in good condition, unfortunately the set no longer exists as I heard that the person who bought the set from me burnt the cabinet for some inexplicable reason!
Mike (Gridiron).

mark pirate · 7th Mar 2015, 11:04 pm

Hi Mike, let me know if you are going to strip the Murphy chassis, as I may be in the market for some parts from it when I start restoring mine.
I know it powers up, but no line whistle or EHT was present.

Mark

line sync · 7th Mar 2015, 11:43 pm

Hello mike , He burnt the baird 12" console not the dynatron .
The Dynatron TV23 is still very much alive and in working order.
That baird cabinet was very nice as well , still can not believe he did that.
I wonder if the chassis still exists ?

Robin

Gridiron · 8th Mar 2015, 9:39 am

Hello Mark and Robin,
Mark, I will have another look at the Murphy chassis and see if there is anything I need from it and let you know.
Robin, our mutual friend told me that this was the fate of the Dynatron cabinet, but he does tend to get things wrong some times!
Regards Mike.

mark pirate · 8th Mar 2015, 9:51 am

Thanks Mike, much appreciated.
I think the LOPT would be the only part I would require, but I will know more once I take a better look at the set.

Mark

6th Mar 2015, 11:22 am	#1
Gridiron Heptode Join Date: Apr 2010 Location: West Midlands, UK. Posts: 662	Two Unknown Early TV Chassis Can anyone identify either of the chassis pictured, both from Radiophile auctions, the first one is mounted on a substantial framework. Sadly the tube looks to be unrecoverable as the most of the connecting wires are broken at the seal. Thanks for your help, Mike. Attached Thumbnails

6th Mar 2015, 11:53 am	#2
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Two Unknown Early TV Chassis A Dynatron perhaps? That firm used to construct their TVs around a substantial framework. What ever it is, it deserves a full restoration and if possible a suitable cabinet to house it in. DFWB.

6th Mar 2015, 2:16 pm	#3
mark pirate Dekatron Join Date: Mar 2008 Location: Worthing, West Sussex, UK Posts: 5,185	Re: Two Unknown Early TV Chassis Possibly Dynatron. the frame looks familiar, but they were usually finished in green hammerite and had a metal label attached. I would guess it dates from the late 40's. It may be possible to recover the CRT using spring loaded terminals against the broken lead stubs. I don't recognise the other chassis though. Mark

6th Mar 2015, 3:38 pm	#4
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Two Unknown Early TV Chassis The second chassis could be a Pilot CV84. c 1953. DFWB.

6th Mar 2015, 5:37 pm	#5
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Two Unknown Early TV Chassis Picture of another Pilot TV chassis. This example has only one cross brace. DFWB. Attached Thumbnails

7th Mar 2015, 9:24 pm	#6
mark pirate Dekatron Join Date: Mar 2008 Location: Worthing, West Sussex, UK Posts: 5,185	Re: Two Unknown Early TV Chassis I have finally recognised the other chassis, it is a Murphy V150 I suddenly remember I have one on the roundtuit pile, I must drag it up on the bench soon. Mark

7th Mar 2015, 10:42 pm	#7
Gridiron Heptode Join Date: Apr 2010 Location: West Midlands, UK. Posts: 662	Re: Two Unknown Early TV Chassis Thanks for the replies and letting me know the identity of the second chassis, Markpirate. Fernseh's suggestion of the first chassis being a Dynatron could be a possibility, I did many years ago have a Dynatron TV23, the chassis of this one were supported by a framework which, if I remember correctly, was in typical cadmium plate as were the two chassis. The two remaining octal valves on the main chassis are an EL38 and an EL33 as used in the TV23 , the detached tube base is a duodecal, the label on the tube is missing. I bought the TV23 from Gerry Wells and managed to get it working, the tube was a CRM121 in good condition, unfortunately the set no longer exists as I heard that the person who bought the set from me burnt the cabinet for some inexplicable reason! Mike (Gridiron).

7th Mar 2015, 11:04 pm	#8
mark pirate Dekatron Join Date: Mar 2008 Location: Worthing, West Sussex, UK Posts: 5,185	Re: Two Unknown Early TV Chassis Hi Mike, let me know if you are going to strip the Murphy chassis, as I may be in the market for some parts from it when I start restoring mine. I know it powers up, but no line whistle or EHT was present. Mark

7th Mar 2015, 11:43 pm	#9
line sync Heptode Join Date: Sep 2009 Location: Kinver, Staffordshire, UK. Posts: 634	Re: Two Unknown Early TV Chassis Hello mike , He burnt the baird 12" console not the dynatron . The Dynatron TV23 is still very much alive and in working order. That baird cabinet was very nice as well , still can not believe he did that. I wonder if the chassis still exists ? Robin

8th Mar 2015, 9:39 am	#10
Gridiron Heptode Join Date: Apr 2010 Location: West Midlands, UK. Posts: 662	Re: Two Unknown Early TV Chassis Hello Mark and Robin, Mark, I will have another look at the Murphy chassis and see if there is anything I need from it and let you know. Robin, our mutual friend told me that this was the fate of the Dynatron cabinet, but he does tend to get things wrong some times! Regards Mike.

8th Mar 2015, 9:51 am	#11
mark pirate Dekatron Join Date: Mar 2008 Location: Worthing, West Sussex, UK Posts: 5,185	Re: Two Unknown Early TV Chassis Thanks Mike, much appreciated. I think the LOPT would be the only part I would require, but I will know more once I take a better look at the set. Mark