Wednesday, 19 December 2012

Pye 201T 21" Television - An Early Example of NZ Manufacture **These two sets no longer exist**

Well its been a while since I've updated anything on here...With work/kids/family etc,etc that sure eats into ones time, but still get to tinker with my TV toys after the kids are in bed when its late at night! The Murphy is nearly done so watch for an update on that shortly.

Finally got a chance last night to take some photos of this Pye 201T, which I got a few months ago along with a donor for parts. This is now one of the oldest sets in my collection and other considerable find for 2012.

What you are looking at is an early example of Pye televisions that were being made here in New Zealand at the time, all were 625 line.

The 201T started off in December of 1959 with an initial run of 300 according to my knowledge, but not sure how many more were manufactured and how many years this model ran for.

Both sets are not in the best of condition, cabinets/chassis have suffered due to sitting outside or in a very damp shed/garage. One set is slightly better than the other and thats what is shown here.
They came from Auckland from another vintage radio/electronics enthusiast who could not bear to throw these out, thinking that someone might want them. Thank goodness he didn't.

Like an English Pye TV's this chassis is live with series filament chain running P series valves. The CRT is a Philips AW 53-80, not the sort of tube I'm used to seeing . The chassis mounts on the side of cabinet and the whole thing slides out, making access and servicing very easy. The chassis position and layout reminds of an American design in some ways.

The circuit and chassis layout is very closely related to an Australian Pye chassis T12-D. Comparing the two they look almost identical.

In regards to the valve lineup, it uses mostly PCF80's through out the set.

PCF80 - Oscillator/Mixer
PCC84 - RF Amp
PCF80 - 1st I.F./Sync Clipper
PCF80 - 2nd I.F./Sync Separator
PCF80 - 3rd I.F./AGC Key
PCF80 - Video Amp/Video C.F.
PCF80 - Sound Limiter/Sound I.F.
PCL82 - Sound Output/Audio Amp
PCF80 - Horizontal Oscillator
PCL82 - Vertical Output/Oscillator
PL36 - Line Output
PY81 - Boost Diode
DY87 - EHT
PY82 - HT Rectifiers

So I class the 201T as being rather rare and the 'better' one is going to be a project and a half!
When I do get to this, I'll focus on getting the chassis up and running first and worry about the cabinet later.

There is a lot of wax caps and resistors under there which will all be past their 'use by date' so I've got some work ahead of me with this beast. At least I have spare parts should there be a faulty LOPT or the likes. Hopefully one/both of the picture tubes are still OK. I should test them first.

I doubt whether there are many more of this model that still exists most of them would be buried long ago so I've only got these to work with.

So when I get to this one there will no doubt be an update here of course!

Some photos and a circuit below for your amusement.

The donor set!

Thursday, 16 August 2012

Bush EV863C Super Deluxe 23" TV

Here's another English set I got towards the end of last year, I paid a grand total of $1.50 NZD for it.
At the time I nearly didn't get it as space was a big tight then but the advertiser advised that it wasn't a very large set so that made the decision. This is also rare export model Bush.
It cabinet is quite fancy and it would have originally had legs but never came with the set. It reminds me of the English Pye that I've got with doors but this one is later and bit more plainer to look at.
I did power it up when I got it and happy to say that it does work, the vertical has issues as usual and the channel selectors are dirty but it'll bounce back quite well I should think. One thing about the push button channel arrangement, in regards to tuning you push the square button in and then try and turn the hexagonal stalk to tune and this is not easy with big fingers! There is meant to be a tuning tool for doing this, but that too is long gone. At least I'll only have to tune it to one frequency for the RF output from my modulator and leave it at that!
So just some photos for now...Another 'TV' for that project list that is getting very long........

Wednesday, 15 August 2012

Decca Prestomatic DPT 23" Professional TV

I got this just before Christmas of last year from a friend who also is a radio collector and was about to move at the time and needed to offload some extra bits and pieces that he had and this is one of them.
He brought  this Decca back with him from the UK and modified it to work here. It is actually a dual standards set so does have 405/625 line and UHF.
According to comments I got in regards to this on the UK Vintage Radio & TV forum, this Decca is rather rare so I better make sure I look after this one!
It was working back in 2009 but developed a intermittent connection on a socket which burnt through and hasn't been used since, but did go very well prior. These were a good design and the chassis is also a hybrid. Thankfully he gave me the full service manual and notes with it.
Apparently the 425 switching section has been hard wired out but I'm hoping that this won't be too hard to reverse as I'd love to see a 405 line picture in operation.
Here are some pictures of it, nice looking TV I reckon! Looking forward to getting this one going.

Monday, 30 July 2012

Pye T25Y 19" Slimline TV

Here is another version of the Pye T25Y. This one has a 19" picture tube and is a later production model made in 1971.
It does have legs but were removed when it was transported as this was part of the haul of old TV's that I got back in early January.
Quite a smart looking set with clean lines, Formica cabinet and I love the "Transistorised" slogan on the front. I guess Pye would have been moving the 'Solid State' slogan back then as it was 1970's and this chassis still uses mostly valves. Mind you valves were coming to end by this time and with colour being around the corner.
According the previous owner, this thing did work but not very well.
So just some pictures for now, will update when I get to working on this.

Friday, 27 July 2012

Homebrew 1960's Black & White TV ** This set no longer exists **

I should have really posted this set up on here ages ago, but kind of forgot about it until recently while going through some old photos on my backup hard drive.

Back in October of  2010 I got a phone call from a friend who was contacted by an old lady to say that she had her deceased husbands 'home made' TV set in her garage that she wanted to give away. Naturally I was the first person he called!

So I made the trip to her place and she told me the story about how her husband who was a TV technician and worked for Broadcasting would make a trip every few months or so to the UK for training/courses/seminars to keep things in line with television broadcasting here in NZ at the time.

Not sure how/why or when he decided to make a TV of his own, guess he had the knowledge and the fact that TV sets were rather expensive back in the 1960's so it more than likely prompted him to do it.
Apparently so the story goes that when he went to the UK, he would bring bits of it back in his luggage. He once got interrogated by Customs as to what these parts were and when he told the Customs Officer that it was television parts, the officer laughed and said "Television Parts? We've only just got Television so these cannot be!....Bugger Off!"

So the set was made up of what seems to be very much an English Thorn chassis and from what other information I've gathered the yoke and picture tube are Pye. The cabinet is custom made and the speaker and grille are Philips. Interesting also how the chassis is split rail, one up top and the other down below, makes for easier servicing and the top panel hinges up.

This would definitely be a 'one off' television set and I highly doubt there would be any others, unless he built another for some reason. I have to admit thought it is quite nicely made although some of the wiring and the wires going to the yoke/crt base etc are quite short which does make working on it a bit tedious.

I did fire this up using the variac not long after I got it, confirmed that it had EHT and an image of some sort - frame collapse and looking at all those horrible little hunts caps all over the place I didn't run it for too long and having no vertical drive didn't help either. Started poking around in the vertical section and found the vertical oscillator blocking transformer to be open circuit one side. Discovering that transformer was faulty kind of stopped me for going any further with it and I just put it back together and left it.

Fast forward to one year later when in 2011 another radio friend who knows I collect TV's was offered some old pictures tubes and TV chassis/parts from someones attic which he took and put aside for me. Little did I know that one of these chassis's would end up being almost exactly the same as the one in the home brew TV and even better it came with a service manual and circuit and the best part was is that it had the transformer I needed! I couldn't believe it out of all the odd ball things you come across what are the chances that another complete donor chassis would be in amongst it all!
This is also how I identified the chassis as being  a Thorn variant thanks to the guys on the UK Vintage TV & Radio forum.

But this is as far as I've gotten with this home brew TV...I might make this my next project as I feel it does deserve some attention.

Plenty of photos thats all on this one for now..... Watch this space! :-)

Updates coming very soon...I have doing work to this beast...7/6/2013


Right hand side
Left hand side
Chassis view

Line output section

Control Panel/Tuner
Underneath top chassis

Another view
Underneath bottom chassis

First attempt at powering up..good signs apart from no vertical.

Donor chassis

Wednesday, 25 July 2012

Pye T25Y 16" Portable TV

Here is a smaller set from my collection, it has a 16 inch CRT and of a hybrid construction so has valves and transistors combined together. Has a total of nine valves.
This one was manufactured around 1969 which was getting towards the end of the monochrome era. I believe that black & whites sets stopped being made here in 1973 with the advent of colour just around the corner.
These were popular sets in their day and were pretty reliable, this one I've owned for many years and recall getting it for free. I did work on it briefly back in 2003 and from memory had some problems with the vertical and didn't go any further with it.
Nice and easy to work and nothing in these are too difficult to get at. The flyback sections uses a compactron valve 38HE7. This valve has the boost diode and line output pentode all in one. A lot of American sets used valves like this in their portables and larger sets as well.
So just some photos for now...Enjoy!



Chassis hinged down

Close up of line output/EHT section

Valve/Transistor locations.

Monday, 9 July 2012

Pye Marketing News August 1974

I was given some very rare New Zealand Pye Factory News Bulletins from the mid 1970's to early 1980's so naturally I thought the best place to scan and post them up was here!

This one is about the release of the Pye Vidmatic CT102 Colour Television.

Many thanks to Graham Street who kindly donated these to me.

Thursday, 21 June 2012

Early Television History in New Zealand

1949 - Departmental Committee established to advice the Government on overseas television developments.

1951 - Canterbury University School of Engineering conducting experiments with closed circuit TV.

7th March 1951 - NZBS first official demonstrations for Waring Taylor St studios in Wellington.

May 1952 - Canterbury Engineering School TV transmissions using callsign ZL3XT.

1952 - Departmental Committee recommended the adoption of the 405-line system of transmission.

23rd February 1952 -  First test signals called "1YA Television" in Auckland.

1953 - The NZ Radio and Electrical Trades Federation annual conference in Christchurch where delegates were invited to view a demonstration of Television as operated by the Canterbury School of Engineering.

27th November 1953 - HMV in Wellington gave a public demonstration of Television with equipment made by Collier & Beale.

1953/54 - PYE brought to New Zealand a complete television transmission station for the Queen's Royal Visit.

January 1954 - PYE demonstrated television equipment at the Wellington Royal Show and later at Auckland in April 1954.

1954 - Harlequins versus Barbarians Rugby Match at Waihi's Rugby Park was televised by Akrad Engineers as and outside broadcast and sent to sets around the field and local hospital.

Early 1957 - Bell demonstrated closed circuit TV at the Auckland Birthday Carnival at Western Springs. Similar equipment was demonstrated in Dunedin later that year.

May 1957 - Bell's first TV broadcasts on air using ZL1XQ callsign.

From July 1957 Bell's transmissions are regular for about two hours a night, four nights a week to an estimated 100 sets.

August 1958 - Government announcement that when Television is introduced in New Zealand it will be the 625 line system.

November 1958 - NZ Television Society is formed.

March 1959 - Bell TV has adverts.

April 1959 - Bell had produced the first two commerical TV models for sale.

May 1959 - First official broadcast by New Zealand Broadcasting Service from Shortland St "NZBSTV Channel 2"

December 1959 - An initial run of 300 black & white PYE 201T 21 inch television produced at the Akrad Waihi factory.

28th January 1960 - Government announced that the NZBS would operate a national TV service starting in Auckland.

1st June 1960 at 7:30pm - NZBS TV service commenced in Auckland (for 4 nights a week).

1st August 1960 - First TV licences on sale at 4 pounds per annum.

October 1960 - NZBS TV on for 5 nights a week.

September 1960 - Bell TV services ceased (except for a short re-activation period in early 1961 when a fire in the NZBS facilities at Shortland St caused a shutdown there).

1st January 1961 NZBS began transmitting 18 hours per week.

Here is an article from the NZ Herald on Monday 22nd June 1959:

                                                           600 TV Sets Already Sold in City

About 600 people have brought television receivers in the greater Auckland since they were put on sale in shops on March 12. But since the Government introduced tariff control on the picture tubes on February 9, the most any firm has been able to import is 100 tubes.
Now the demand for sets is considerably in excess of the supply.
"We cannot keep up with it" said one of the large manufactures. "Right now, it will take 12 months from the time of the order for a set to be delivered."
                                                                   Go-Ahead Awaited
"If we could get the go ahead from the Government we could have things rolling again in three weeks. There need be no lack of entertainment either.
"People are buying sets now to see Channel Two, 1YA, once a week and Channel Six, transmitted by the Bell Radio-Television Corporation, three times a week.
Their programmes are experimental, but they are a novelty.
"Furthermore 1YA could put on a programme every day right now. It has two studio cameras. a film transmitter with a vast store of National Film Unit material and a pretty good announcer. The whole industry is ready to go."
                                                                      Prices Increased
About 200 retail shops are selling television sets in greater Auckland. The post office is keeping a record of sales so that, when the comes it can call for licences, which are not yet required.
After they went sale, prices of 17-inch sets rose from 135 pounds to 151 pounds and 21-inch sets from 185 pounds to 208 pounds. This retailers said, was because every set sold required at least one call back. With only short terms of transmission on four nights, it was difficult to adjust sets and serials and teach customers how to 'drive' the receivers. Usually a customer had to be visited three times after he bought a set. The original cost estimate has to be raised.

Saturday, 28 April 2012

Colour TV Advertising/Brochures

I recently got a box full of old television service information and whilst sifting through it all I came across these old colour TV brochures.
Any New Zealand TV set advertising I consider quite rare as most of sort of thing would have been disposed of many years ago.
Just to note with the Pye brochure, the second side shows the re-badged Philips K9 sets and thankfully someone has written a date of 10/1973 on it. The two Pye sets on the first side are the early CT101 chassis, now virtually extinct.
The other brochure showing the AWA Deep Image set were actually re-badged Thorn TX574/3500 chassis.
This particular model is one TV I would love to come across as my earliest childhood memories were watching one of these but also now these have pretty much gone too.
It wasn't very reliable though, I remember every month or so a white TISCO van would turn up and a man would come in, pull the back off and change a board which would get the thing going again for a while. It got nursed along until about 1982 when Dad decided one night after it died halfway through the news, that it was time to buy a new TV.

Anything else I come across in the future like this will also be put here. Enjoy!