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Forum 141

B&W TV Pye 40f

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The_Teleman
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Today I finally got a set I’ve been looking out for for years 

it’s the elusive PYE 40

its the big brother of the 16” 31f with a few modifications like no mains dropper and the line output valve is a PL504 instead of a PL81a the boost diode has also been changed from a PY81 to a PY88 

the seller also sent the legs with the set but these are not original these legs are the longest legs I’ve ever seen on a tv at 25” tall they look so wrong , I keep looking at it and laughing at the size of those legs 

I’m sure when I get round to restoring the set I can find some better legs 

it’s a decent looking set with a few worm holes in the base and the odd one or two on the front nothing that can’t be sorted 

it looks like it’s had a couple of tuner buttons replaced in the past as the original ones probably took someone’s eye out when it was catapulted across the room 

I’ve removed the back for a quick look all is complete and untouched so that’s hopeful 

so that’s yet another set on the to do pile that keeps getting bigger by the week . 

 
Posted : 27/07/2023 12:02 pm
Nuvistor
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@the_teleman 

Just checked the circuit, I don’t remember the Auto transformer in the power supply but yes the buttons did fly off. The replacements had a metal end for the circlip and a rubber damper had to be installed to soften the blow. It seemed to work and I didn’t have problems after new buttons and mod.

The was one of Pye first ventures into a dual standard hybrid chassis, rumour had it the Mr Stanley wanted to be the first off the block with a hybrid dual standard, this would be around 1965. I am sorry to say it had problems with the integrated tuner/IF, fiddly to work on and the Pye manual stated they were to be returned for repair. I fixed them, too much trouble to return.

The second version of the Pye chassis 368? Had a similar tuner but the IF panel was redesigned and fitted to the main chassis. This proved to be a reliable TV but the rotary tuner did have a small problem in stripping the cog wheel, a mod with new quadrant lever and cog cured the problem.

Should be an interesting repair.

 

Frank

 
Posted : 27/07/2023 12:40 pm
slidertogrid
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Hi Frank can you post some pictures of the set? I had a 16" one back in the 70s but the IF was missing, Now I know probably why! Wasn't the 67 Chassis similar, before the 368 "Olympic"?  ISTR is was like the 368 but had a Bowden cable system switch instead of the solenoid of the 368 and a pitch covered LOPT . I can't remember if the IF panel was on the back of the Tuner or chassis mounted. 

 
Posted : 27/07/2023 2:20 pm
Nuvistor
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@slidertogrid 

Sorry. I don’t have any sets but I do remember it, I will have a look around the net, perhaps a photo available.

 

Frank

 
Posted : 27/07/2023 6:02 pm
Nuvistor
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@slidertogrid 
Photo on UKVRRR of the chassis of the 16inch, same intergrated IF/tuner.

https://www.vintage-radio.net/forum/showthread.php?t=160116

Looking at the manual the 67 Chassis it has the IF strip mounted on the main chassis like the 368. The 67 was a big improvement 40F.

Hopefully  all remembered correctly.

 

 

Frank

 
Posted : 27/07/2023 6:53 pm
sideband
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Haven't seen a 40F since the early 70's. Was the tube fitted with a Fenbridge cap?

 
Posted : 27/07/2023 7:23 pm
slidertogrid
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Posted by: @nuvistor

@slidertogrid 
Photo on UKVRRR of the chassis of the 16inch, same intergrated IF/tuner.

https://www.vintage-radio.net/forum/showthread.php?t=160116

Looking at the manual the 67 Chassis it has the IF strip mounted on the main chassis like the 368. The 67 was a big improvement 40F.

Hopefully  all remembered correctly.

That set is exactly the one I had.  It is a Fenbridge cap by the looks of it. I can't remember what happened to my set I wish I had kept it until an IF panel turned up!  Sorry Frank I got it wrong and I thought you were the OP ! Doh!  Thanks for the reply though I do have a Invicta 368 in my collection but no 40F or 67 chassis.

@the_teleman Would you be able to post some pictures of the set? 

Thanks, Rich

Mod Note: Fixed quote

Advice: https://www.radios-tv.co.uk/community/postid/115519/

 
Posted : 27/07/2023 7:37 pm
Nuvistor
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@slidertogrid 
Oh what joys, the Fenbridge cap or guard, perhaps relatively easy to fit when the item was new and pliable . They could be a pain when a few years old, thank goodness for the Panorama types that superseded them and became the norm.

 

Frank

 
Posted : 27/07/2023 9:21 pm
slidertogrid
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Yes they went a bit green and cloudy when they got old. Maybe the nicotine as everyone seemed to smoke back then? I have a couple of Thorn 950s with Fenbridge guards. I also have a Pye 11U which should have one... I thought someone had fitted a direct vision tube but on closer examination they have just cut through the Fenbridge guard as it comes through the front of the set meaning the tube has no implosion protection. The set is under the bench facing the wall until I find a replacement, It has waited 10 years so far! 

 
Posted : 27/07/2023 10:51 pm
Nuvistor
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@slidertogrid 

We didn’t sell the Pye brand until about 1968, we had the Ekco Ferranti agency, same chassis from around 1963 as the Pye. Thinking about the Fenbridge guard I can only recall them on the Ferranti sets not the Ekco, but that a could be false memory.

 

Frank

 
Posted : 28/07/2023 7:22 am
slidertogrid
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If you mean the Pye 11U chassis I think it used almost every implosion protection made. I have an Ekco with a separate flat plate glass. An Invicta with the hard plastic 'bubble' type protection. A Pye that (should have) a Fenbridge guard and I have seen various models, Possibly Ferranti and Dynatron, usually 23" that have the twin panel bonded laminate tube.

British relay reconditioned their 11U chassis sets with a new cabinet a new Relay switch unit "front end" Vid box? and a 20" square screen tube. It looked a nice modern set until you took the back off! 

 

 
Posted : 28/07/2023 2:38 pm
Nuvistor
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@slidertogrid 

Yes the 11u was the first Pye chassis that Ekco used as far as I am aware. Previously they were all Ekco designs with the chassis configuration but not content staying the same from the Ekco model 368 around 1959 to the change over to Pye in around 1963.

Yes I saw the various CRT types, until the Panorama CRT’s the moulded screen were the easiest to replace. 
I always liked the 11u especially the later version with the EF184 second IF and PCL84 video amp. The seperate preset contrast controls helped a lot with getting equal gain from both systems. Only let down by the valve UHF tuner but that was the technology of its time. With a decent signal 625/UHF performance was excellent, I had a T433 Ekco  as my home TV from around 1970 to 1975 using UHF for the 3 stations, noise free.

 

Frank

 
Posted : 28/07/2023 10:19 pm
crustytv
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I was over at Chris' place today, delivering and collecting a TV. I mentioned this thread had sparked a little interest, and folk wanted to see a pic, so I took a photo of the actual set. It's in remarkable condition.

20230731 122753

CrustyTV Television Shop: Take a virtual tour
Crusty's TV/VCR Collection: View my collection
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Crusty's 70s Lounge: Take a peek

 
Posted : 31/07/2023 3:34 pm
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Cathovisor
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@crustytv How is Chris after his health scare?

 
Posted : 31/07/2023 5:27 pm
The_Teleman
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Sorry guys I forgot to add the photo of the set so here it is 

IMG 2972
 
Posted : 31/07/2023 8:39 pm
The_Teleman
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@cathovisor 

thanks for asking , I’m doing well and taking the tablets as advised 

still more tests to do a scan to determine how much damage has bet done to my heart if any and I have to have a monitor fitted next week just for a day 

anyway back to the tv 

👍

 
Posted : 02/08/2023 10:28 pm
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Cathovisor
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@the_teleman It pleases me to hear that - keep taking the tablets and here's hoping for a positive outcome 😊

Speaking of the 368 chassis sets - I had one in a teak case with a 24" tube, it looked quite modern and I'm sure had a two-digit model number. Any idea what that might have been? 

 
Posted : 02/08/2023 10:56 pm
The_Teleman
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@cathovisor hi , yes it would of been one of 2 models either 83 or 93 the 83 was from 1969 and the 93 from 1970 both using the 368 chassis 

anything before 1969 would of been a 23” crt  and any thing after would of been single standard 169 series 

 
Posted : 03/08/2023 9:53 am
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The_Teleman
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Got a bit of life out of the old girl this morning after a few capacitor and resistor replacement 

I also had to replace the loptx with a new old stock one luckily the only one I had 

still a good way to go

IMG 2999

 

 
Posted : 03/08/2023 10:00 am
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Cathovisor
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@the_teleman '93' rings a bell - thanks, Chris!

 
Posted : 03/08/2023 3:21 pm
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