Marconi TV-100 Canadian Marconi

[dusty]

Hi,

I hope this it is ok to ask for you help in identifying a t.v. I have been searching for days trying to find something out about a vintage Canadian Marconi Set.







It is a model TV-100 and was made in Canada by Canadian Marconi - it has a 9" circular tube and is quite small and sits on a table.

TV came to Canada in 1952 and after reading as much as I can find - which isn't much - I think it may be one of the early 1951 models first made by Marconi. It has a plate on back with Model: TV-100 and serial No. 701. The name Williams is written inside on the back of the chassis. Inside is a schematic of all the tubes which shows the names of all the manuf plants in Canada.

It took awhile to boot up - surely there was another term then - "warm up?" but it appears to be working. The tubes are all lighting up and there is a white glow to main CRT. We were thinking of hooking it to an old tv converter and the converter to cable to see it will bring in a picture.

Long story - does anyone know what this is, or where I can find further info on this Canadian Marconi model? -

Thanks very Much

Dusty

2/21/2013 I have a little more info on this tv. I found list of manuals for Marconi and the list of models. It appears TV-100 was the first model made.
http://www.antiqueradioschematics.org/marconi.htm

[dusty]

Don't know how to delete this.

[dusty]

I am just going to follow up with my previous post and I am hoping one of you will know the answer.

We have the Marconi TV-100 working, the sound is good, the tubes all light up and the picture tube lights up and we get a picture.

The problem is we are getting the same picture repeated 4 times. Does any one know what this problem might be?

How to fix it?

Thanks very much

Sandy

[Sandy G]

Yr TV is QUITE old, say on the order of 60 years. You will need to have a QUALIFIED technician go thru it, & replace defective parts. You MAY have a bad tube or 2, but undoubtedly the MAJOR part of what is wrong w/it is likely bad capacitors & out-of-spec resistors. Fortunately, they can be fairly easily replaced by someone who knows what they're doing, & yr TV can be made to operate as well as it did when it was new. Please DON'T turn it on & run it anymore, however, until you get it checked out- An "Iffy" cap can let go, explode, maybe start a fire, or take out some other component that is impossible to find now...

[Dave A]

Without pix it sounds like your horizonatal oscillator is running off-speed. Your horizontal customer control is designed to adjust for a proper speed with some slack. You need to find the horizontal oscillator adjustment on the chassis and adjust it to get it near where the customer control can do its job.

That is unless you have not re-capped the set. All bets/adjustments are off unless the caps are good.

[Phil Nelson]

You need to replace all of the old paper and electrolytic capacitors if you expect the TV to work reliably. That is not rocket science, but if you have no experience working on electronics, I would not recommend a TV as a beginning project.

If you skim a couple of the TV restoration articles in this section, you'll get an idea what's generally needed to get an old TV working:

http://antiqueradio.org/restoration.htm

This article has advice on finding someone to restore your TV:

http://antiqueradio.org/howfix.htm

If you contact this Canadian vintage radio club, they may be able to help you find the schematic for your TV:

http://canadianvintageradio.com/

If you want to try restoring the TV yourself, I recommend practicing recapping on one or two simple tube radios from a thrift store or flea market. If those projects are successful, you might be better equipped to tackle a TV. The articles listed in this section will help you get started:

http://antiqueradio.org/begin.htm

Regards,

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html

[dieseljeep]

It looks like it could pass as a GE 12T1, or at least close to it.

[Sandy G]

Originally Posted by dieseljeep

It looks like it could pass as a GE 12T1, or at least close to it.

I was just gonna say...Double-first cousin, or close...(grin)

[dusty]

Thank you for this list of links. I will go through it with a fine tooth comb.

[dusty]

Originally Posted by Sandy G

but undoubtedly the MAJOR part of what is wrong w/it is likely bad capacitors & out-of-spec resistors. Fortunately, they can be fairly easily replaced by someone who knows what they're doing,..

Yes we were thinking this might be the issue. This is going to be a learning curb but seems worth the challenge.

YVT



Dusty

[dusty]

Thank you to each of you for your input. All your comments were very appreciated.

YVT

Dusty

[electroking]

Hello,

Great find, one of the earliest Canadian made commercial (rather than experimental)
sets! I did work for the Canadian Marconi Company (1986-1990, long after they
moved out of consumer electronics), so I do feel somehow attached to this set...

Schematic for this is probably found in one of the earlier issues of Radio College
of Canada TV manuals. I do have those, but stored away for the winter, so maybe
someone else could help. Good luck, don't harm this valuable set!

[dusty]

Originally Posted by electroking

Hello,

Great find, one of the earliest Canadian made commercial (rather than experimental)
sets! I did work for the Canadian Marconi Company (1986-1990, long after they
moved out of consumer electronics), so I do feel somehow attached to this set...

Schematic for this is probably found in one of the earlier issues of Radio College
of Canada TV manuals. I do have those, but stored away for the winter, so maybe
someone else could help. Good luck, don't harm this valuable set!

Thank you for that lead. The hunt is now on.

I will post if I find it. Please do check back in the future to see if I was successful.

Thank you

Dusty