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RCA CTC7 Late version.

PostPosted: Thu Oct 15, 2015 5:40 pm
by Till Eulenspiegel
Pictures of the chassis of my RCA CTC7 colour TV set.

This is the late production chassis and for the HT rectification two silicon diodes are employed instead of the 5U4G valves used in early production sets.

The 6DQ5 line output valve failed some time ago and so an EL509 is being used for the time. In fact I now have two spare 6DQ5s so it'll not be long before the EL509 is replaced. The chassis is housed in the cabinet of the model 21CD872 the "Abington".

Through the ETF visit ED Reitan's color TV history website: http://www.earlytelevision.org/Reitan/CTC7_Gallery.html

Till Eulenspiegel.

ctc7-1.jpg

ctc7-2.jpg

ctc7-3.jpg

Re: RCA CTC7 Late version.

PostPosted: Thu Oct 15, 2015 6:53 pm
by crustytv
Hi David,

My Red and Blue guns have failed leaving me decidedly grĂ¼n ........ :qq1 you're a lucky man having one of those to play with.

I have quite a hankering for a US color, I rather fancy an early 60's one rather than 50's. I started a page on my website some time ago http://www.radios-tv.co.uk/?p=4973

Very much looking forward to this repair and thanks for sharing it here, a unique treat :aad

Re: RCA CTC7 Late version.

PostPosted: Thu Oct 15, 2015 8:45 pm
by EDDINNING
I Like that adaptor David, shades of the 40's and make do and mend, but I suspect we will be seeing many more like that as the supplies dry up.
Hang onto your old valves for their bases.

Ed

Re: RCA CTC7 Late version.

PostPosted: Thu Oct 15, 2015 9:20 pm
by Till Eulenspiegel
Hi Ed,
Good advice. I'm having problems with the Mazda UU8 full wave rectifier valve which is used in many post-war Murphy and Pye TVs. The answer is to make a replacement solid state unit comprising of two silicon diodes and two surge resistors. These can be mounted on a Mazda Octal valve base.

Hi Chris,
Worth a visit from time to time is the ebay.com USA website. '60s color TVs do turn up occasionally.
The earlier 50s sets are becoming increasingly rare and expensive.

http://www.ebay.com/sch/Television-Sets ... html?rt=nc

I'll post up more pictures of the CTC7 very soon. The 110 volt transformer is buried somewhere upstairs.

Till Eulenspiegel.

Re: RCA CTC7 Late version.

PostPosted: Sat Oct 24, 2015 5:20 pm
by Till Eulenspiegel
From youtube: A working CTC7 color TV set.

https://www.youtube.com/watch?v=lJUeUH8bTW4

Till Eulenspiegel.

Re: RCA CTC7 Late version.

PostPosted: Sat Oct 24, 2015 8:09 pm
by Katie Bush
What a fantastic picture!

A hideously gorgeous American TV from a better time.... :aad

Marion

Re: RCA CTC7 Late version.

PostPosted: Mon Oct 26, 2015 12:10 am
by ntscuser
Looking forward to this. It's not often an early American set is restored in this country.Image

On the subject of 110v transformers, a local electronics contractor wired his entire house for 110v/16amps. He had returned from a spell of working in the USA and his wife just couldn't live without her American domestic appliances.

Re: RCA CTC7 Late version.

PostPosted: Mon Oct 26, 2015 2:09 am
by Till Eulenspiegel
Check out this GE roundie. It's got a real bad cataract tube. Also a Majestic radiogram made in England. It's a Fergy.

https://www.youtube.com/watch?v=kTesct_ ... e=youtu.be

Till Eulenspiegel.