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1970's Tandberg CTV1 & CTV2; additions to the Crustytv collection  

 
crustytv
(@crustytv)
Vrat Founder Admin

Two further sets added today to the growing number of continental examples for the collection, both Tandbergs. Both 22" one in a beautiful rosewood cabinet and is the early 1972 Hybrid, a CTV-1. I have the original user manual for this as well which will be scanned. The second 22" in an equally nice teak cabinet, a little later perhaps 1974 (to be confirmed) all transistor CTV2. 

These models are not covered in the red books, or Gordon Kings three volume set, I do have some TV magazine articles.  Full documentation of the sets by way of photo's will be taken and added to the Crusty collection blogs tomorrow. Repairs will be documented when I have my workshop back in action.

For now just a teaser.

tand

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Posted : 19/09/2020 11:02 pm
Red_to_Black, Lloyd, Cathovisor and 2 people liked
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PYE625
(@pye625)
Famed V-Ratter Registered

The CTV1 is close to my heart as I actually had one in 1990 and used it in my bedroom. This one had a teak cabinet and was rescued from the local rubbish tip. It was still in use until I moved out to my first flat, but sadly I could not take it with me.

My parents eventually dumped it. ? 

To understand the black art of electronics is to understand witchcraft.
Andrew.

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Posted : 19/09/2020 11:52 pm
crustytv liked
Cathovisor
(@cathovisor)
Illustrious V-Ratter Registered

These look very interesting, Chris. I'm quite fond of Tandberg stuff, they were quite innovative (especially with their tape recorders). Just beware the Vikings lurking in the service manuals!

I'm still hoping to see the B&O working in the future.

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Posted : 20/09/2020 11:01 am
crustytv
(@crustytv)
Vrat Founder Admin

Here's some photos of the Tandberg CTV2, a very nice clean example both cabinet-wise and chassis-wise. Its clear that the convergence panel drops down from the front of the TV, being attached the speaker grill. This giving the engineer a clear view and access to the controls whilst setting up.

Trouble is I've failed the intelligence test, I cannot fathom how on earth you get it to open/hinge/pop. Hoping someone here may remember. I can see the black plastic doofer at the top but no matter what, pushing poking or squeezing has any effect. I'm loathed to used any instrument of torture from the front for fear of damaging or breaking the fret work. Besides I'm certain this is simple and no brute force required. Had this been the requirement I would expect damage or prior attempts to show. I'm just being thick!

 

I suspect the CTV1 (currently bagged underneath) is going to be very similar but with valves and no doubt the same front drop down convergence, pictures of this set to follow.

td2 1
td2 2
td2 3
td2 4

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Posted : 20/09/2020 12:31 pm
crustytv
(@crustytv)
Vrat Founder Admin

I passed the Krypton test. You have to push hard at the top, left and right until you hear a clonk. Then you have to slide the black plastic bar from the back over to the right, now it unlocks and you can pivot down. I think I tapped into the spirits of long passed Tandberg engineers. ? 

td2 conv

Some TV service advice here https://www.radios-tv.co.uk/tandberg-ctv-2-2/

Next Up: CTV1, is revealed

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Posted : 20/09/2020 12:47 pm
crustytv
(@crustytv)
Vrat Founder Admin

And how wrong I was, I thought the CTV1 would look similar to the CTV2 just populated with a few valves. The CTV1 is an entirely different chassis design.

td1 1
td1 2
td1 3
td1 4
td1 5
td1 6

Some TV servicing info here https://www.radios-tv.co.uk/tandberg-ctv1/

 

Crusty's Collection: Read the repair blogs
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Posted : 20/09/2020 1:56 pm
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RichardFromMarple
(@richardfrommarple)
Trusted V-Ratter Registered

Nice to see some new additions to your collection, Tandberg sets look quite impressive going by the brochure scans & probably some of the better colour boom imports.

Granada re-badged them as Viking for rental.

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Posted : 20/09/2020 3:48 pm
1100man
(@1100man)
New V-Ratter Registered

It's always interesting to see something different, and I've not come across either set before. Both look to be well designed and laid out with good access for servicing. The CTV2 tripler & LOPT look rather Grundig to me. 

Real luxury to have front access convergence controls, saves all that messing about with mirrors.

I somehow suspect that both of these sets will work really well, probably with the minimum of component replacement- they both have a 'quality' look about them!

I will be following their progress with interest!

All the best

Nick

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Posted : 20/09/2020 8:53 pm
Nuvistor
(@nuvistor)
Famed V-Ratter Registered

@crustytv

Is the chassis difference apart from valves that the CTV1 uses a 90 degree CRT and the CVT2 a 110 degree type?

Frank

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Posted : 20/09/2020 9:20 pm
Katie Bush
(@katie-bush)
Famed V-Ratter Moderator

Never seen either of these before! - But, look at all that lovely exposed PCB, with high voltages all over it, with that panel in the service position. I remember being told (of a later G6 chassis) "Never let a customer see that convergence panel (especially if there's kids), otherwise you'll be there every other day to set up the convergence" - after all, "It's our telly, and they're our controls to twiddle with".

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Posted : 23/09/2020 12:12 am
RichardFromMarple
(@richardfrommarple)
Trusted V-Ratter Registered

@katie-bush

The early G8s had a front convergence panel, but needed the speaker grille removed to access them.

Some rental customers worked out how to get to them, and typically fiddle with them until it needed professional help to get them sorted!

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Posted : 23/09/2020 11:40 am
Doz
 Doz
(@doz)
Noble V-Ratter Registered
Posted by: @richardfrommarple

@katie-bush

The early G8s had a front convergence panel, but needed the speaker grille removed to access them.

Some rental customers worked out how to get to them, and typically fiddle with them until it needed professional help to get them sorted!

Yep, just pop out the "Philips" badge at the bottom!

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Posted : 23/09/2020 4:32 pm
EmleyMoor
(@emleymoor)
Trusted V-Ratter Registered

Earlier CTV2s (2-2 series models) were among favourites in my past. We had one at my Infants' school (a 103), and my grandfather had one (a 105).

The 103 broke down once, with a manifestation of the stock "delay line failure" fault that afflicted many Scandinavian sets at the time. Not sure what happened to the 105 - on one of my visits I found a Panasonic TC2203 had taken its place.

"Yes, a bit of wet string may get you a good TV signal here on four channels, but you'll have to dry it out to get Channel 5!"

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Posted : 28/09/2020 1:02 am
Reelman
(@reelman)
Busy V-Ratter Registered

Very nice, always liked the look of Tandberg kit and it’s performance. Looks like separate bass and treble controls, shows that sound was not just an afterthought for Tandberg.

Couldn’t help but notice the “vintage” table lighter, I’m sure I had one as an 18th birthday present..... don’t think it ever worked reliably!

 

Peter

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Posted : 30/09/2020 10:30 am
EmleyMoor
(@emleymoor)
Trusted V-Ratter Registered
Posted by: @richardfrommarple

@katie-bush

The early G8s had a front convergence panel, but needed the speaker grille removed to access them.

Some rental customers worked out how to get to them, and typically fiddle with them until it needed professional help to get them sorted!

I had some experience of G8s like this. A friend of mine way back used to rent out TVs, and there were some early G8s among them. He used a variation of the RTRA contract - one clause he thought potentially too restrictive, he replaced with his own version, stating basically that the user was not to adjust any control that could not be clearly accessed without the use of a tool. He always made sure the speaker grille was properly attached on these G8s. He was actually pleasantly surprised only to have one problem customer who, after a reconverge and reminder, reached the controls and fiddled again - simple answer in that case: cease hire.

"Yes, a bit of wet string may get you a good TV signal here on four channels, but you'll have to dry it out to get Channel 5!"

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Posted : 08/10/2020 1:33 pm
Katie Bush
(@katie-bush)
Famed V-Ratter Moderator
Posted by: @emleymoor

He was actually pleasantly surprised only to have one problem customer who, after a reconverge and reminder, reached the controls and fiddled again - simple answer in that case: cease hire.

Well, that's one way to solve the problem!

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Posted : 08/10/2020 9:01 pm
shaunhw
(@shaunhw)
New V-Ratter Registered

@crustytv

The Tandberg CTV 1 was a lovely hybrid colour TV.  It was unique in that it used three PL802 valves in RGB drive, to drive the CRT grids, rather than the more common 3xPCL84s and a single PL802 colour difference drive, or three transistors in RGB drive.

When I was an apprentice we used to sell these sets, and later I managed to aquire a used one, very cheaply from a dealer which they couldn't repair and exchanged it for the customer for a B&O set!  We soon sorted it out and I had it at home for some years. It was one of those with the tambour doors. The only thing that went wrong afterwards was the EHT tripler, and gradually the tube started to fade - sadly it ended up at the tip.

I have fond memories of it, because everyone who came to the house was stunned by the quality of picture.

EDIT:  It was CRT grid drive with the PL802s. I've just found a service manual online so I checked. Very unusual. The tube cathodes are all strapped together.

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Posted : 19/11/2020 1:11 pm