Saved from the Biffa Bin: Bush TV22.

[Radio Wrangler]

Using the original core stack seems to be important, I suspect both the metal alloy and it's rolling/processing were important in getting the saturation characteristic right and having a linear characteristic right up to it.

We need to keep a look out now for John on his forays, seeding interesting sets where they will be found. If it's the lorry with the Hiab, then there's something massively pre-war in the offing. Probably with a carefully induced sync separation fault. Damned elusive.... no... no that was the Pimpernel....

David

[Focus Diode]

Originally Posted by Heatercathodeshort

Looking at your picture again David I do detect a slight fuzziness.

Also don't forget the quality of the telerecording isn't very good, this was shown long before the Doctor Who restoration team worked their magic on this story and the other episodes.

The picture in post #32 is superb, full congratulations to both Ed and David for their superb work.

Many thanks also to Hamid re his tip on using a Thorn 1500 Line Osc. Blocking Osc. transformer. Worth noting as an emergency repair while one awaits a rewind.

Cheers,
Brian

[FERNSEH]

And here is a few more to be getting on with.

DFWB.

[Heatercathodeshort]

So it's the BBC's fault! I like that one..
Must admit I often wondered if that Doctor Who nonsense was filmed in low definition just to cover up the dodgy film sets. After all, it is just a kids programme and they would never have noticed.

I have a large number of VHS tapes I recorded during the last months of 405 transmission in 1985. To see if your excuse holds up I will play a few through the TV22 after my visit to the NVCF. They are now almost 30 years old. Amazing!

I have omitted that hum cancelling .75uf on my two terrible twins. Disconnecting it produced a tiny amount of ripple that would never be noticed by even the most fussy customer. It is rather a strange addition by Bush and I can't recall any other receiver that uses a similar arrangement. John.

[Hunts smoothing bomb]

Interesting read David,
The set looks like it performs well, I don't know why John dislikes them so. I have one that I did about 5/6 years ago and I like it alot. I think it's jealousy, I reckon really he loves them!
You should surprise him by turning up unannounced, offload a few to him and tell him to get first first light on them all within the hour or else you will be setting off to his museum to claim the first victim!


All the best

[mark pirate]

I have omitted that hum cancelling .75uf on my two terrible twins.

So have I. Both my TV22 & TV24 suffered from these big beasties dribbling huge amounts of wax down the front of the chassis
I did run the 22 with a replacement, but there was no real visible difference apart from the sets power consumption rising with it in place.

Maybe it did make a difference back in the early 50's?

Mark

[kalee20]

Originally Posted by Focus Diode

The picture in post #32 is superb, full congratulations to both Ed and David for their superb work.

Seconded! I'm really impressed - not forgetting the original Bush designer too!

[Ed_Dinning]

Hi Gents, I've examined the stampings and they look like normal Stalloy, not grain orientated material.
If I get a chance I'll try and do a B-H curve to confirm.
Stalloy could be the material of choice; as well as being cheap it has quite a sharp Knee at saturation, a desirable characteristic for a blocking oscillator.

Ed

[Heatercathodeshort]

Originally Posted by Hunts smoothing bomb

I don't know why John dislikes them so. You should surprise him by turning up unannounced, offload a few to him and tell him to get first first light on them all within the hour or else you will be setting off to his museum to claim the first victim!

I love them really. Like a fox loves a rabbit.

Done! I feel I am being set up. I can just imagine the heaps of junk that would be delivered. Mouldy shed finds, flat tubes, shorted LOPT's, O/C blocking oscillator transformers and all the valves in the wrong places. Can I bust them up if I fail to complete the challenge?

I'll bring my mobile cat neutering unit to Mikey's bash so bring along your furry friends.. John.

[Dave Moll]

John's final comment has given me an evil thought, the nature of which will become apparent on Saturday.

[Hunts smoothing bomb]

Intriguing! I can't wait to find out!

Cheers

[AidanLunn]

Originally Posted by Heatercathodeshort

Your dad only thought he was doing the best for you. His plans for his son were on the lines of a bank manager and feared your interests were more in keeping with a rag and bone dealer.

I'm sure they just don't want a load of old junk filling up the house.

That said, washing machines are much less desirable than 405 TVs.

Originally Posted by Heatercathodeshort

Saved just in time David. This one was awaiting it's 'Concrete Raincoat' if you had failed to come up with the goods. Yours looks a bit out on frame linearity so I'll leave this one shivering at the depot just in case the services of the truck mixer are required.. John.

When smashing these up, do you preserve the CRT, LOPT and good valves at least, as these may come useful in other TV resto's?

Originally Posted by mark pirate

That certainly looks good, these are a great little set once restored, mine gets used quite regularly and produces an excellent picture, I never need to adjust it over an evenings viewing. no wonder they were so popular in their day.
I am looking forward to getting my TV24 up and running.

I agree with John re. your TV22, strip it of useful parts, then watch either me or John enjoy smashing up the rest

Originally Posted by Heatercathodeshort

Looking at your picture again David I do detect a slight fuzziness. I hope you're not letting standards slip..
Don't give me any excuses such as 'the room was brightly lit' or 'It's only a cheap camera'.
You have to set the standards to give confidence to the new comers.

The poor quality is more likely the fact that that programme (Dalek Invasion of Earth, ep2, I believe) was of a rather poor VT to telecine transfer, and the Doctor Who Restoration Team did what they could with the material.

Always better to try and get something from the time that survives on its original format, like The Avengers or any programmes still on 405 2" VT. Rather than a mediocre transfer of 2" material to cheap, poorly stored film made 50 years ago.

Originally Posted by Heatercathodeshort

So it's the BBC's fault! I like that one..
Must admit I often wondered if that Doctor Who nonsense was filmed in low definition just to cover up the dodgy film sets. After all, it is just a kids programme and they would never have noticed.

TBH, Doctor Who can sometimes be so violent and so adult in some themes I really wonder if it's a kids show, even in the early years.

Certainly, it has consistently been watched by more adults than children.

[FERNSEH]

After giving a good account of it's self the TV22 has developed a strange fault. The picture hooks at the top and there is a ghost effect. Also there is a buzz on the sound. An alternative Aurora was tried, results are just the same. It's most likely an HT decoupling capacitor has failed.
I'd go for C25. It's located on the main chassis.
HT to the receiver unit from the main deck is the pin designated as A1 on the five pin plug.

DFWB.

[Heatercathodeshort]

Oh dear! The little brat has thrown a tantrum..John.

[Stubble]

No not a tantrum, it’s just hiccups ;-)

[FERNSEH]

Originally Posted by Stubble

No not a tantrum, it’s just hiccups ;-)

Don't worry folks, I'll soon fix it, and to think I gave it good polish today. Looks like new! My special preparation consisting of linseed oil and Brasso was used to bring back the Bakelite shine.

DFWB.

[Focus Diode]

Yes, I was there and the results, both picture and cabinet looked absolutely superb!
Sorry to hear of the fault developing. Hope it proves to be an easy fix.

Cheers,
Brian

[FERNSEH]

How do you like that? I returned to the shop to repair the set and it's fixed itself! Nevertheless, I'd think it would be good policy to change C25.

Check out that glossy cabinet. Pity about those holes which were for one of those oil filled magnifiers. You see a lot of TV22s with them.

That mask needs some attention. An Eau de Nil colour.

DFWB.

[mark pirate]

That mask needs some attention. An Eau de Nil colour.

Although my set has a cream mask, I have seen some sets with a very pale green mask.
Were these later models?
Nice job on the cabinet, sounds like a good formula, I use T-cut followed by neutral shoe wax, it really makes bakelite gleam

Mark

[FERNSEH]

Originally Posted by mark pirate

Eau de Nil colour.
Although my set has a cream mask, I have seen some sets with a very pale green mask.
Were these later models?

Hi Mark,
I think that's right, the set which is the subject of this topic was made in 1952 and must be one of the last Mark 1 models. The sets made in 1950 and 51 had white masks.

DFWB.