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Old 21st Jan 2024, 8:58 pm   #41
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Default Re: REBUILDING A 1965 FERRANTI T1137 “PYE 11U” SERIES 405-625 line CHASSIS TV

What a great write up. Wasn’t to familiar with the 11U hassis. I kept one going for a friend for many years.
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Old 22nd Jan 2024, 1:10 am   #42
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Default Re: REBUILDING A 1965 FERRANTI T1137 “PYE 11U” SERIES 405-625 line CHASSIS TV

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Originally Posted by dazzlevision View Post
Here's the early flywheel sync panel circuit used in earlier Pye Lowestoft made 11U chassis.
Go back ten years before the model 11 was introduced and we find the Pye FV4 employed a similar line oscillator circuit.
The Ekco line oscillator was easier to set up. No stabilising coil.

DFWB.
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Old 28th Jan 2024, 1:38 pm   #43
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Default Re: REBUILDING A 1965 FERRANTI T1137 “PYE 11U” SERIES 405-625 line CHASSIS TV

Excellent write up on a fantastic chassis of the 11u ,
As some of you know I have been a collector of pye sets for many years and this chassis is one of my favourite ones
I have quite a few models from the model 3 through to the large radiogram tv model 28 all use this chassis
Other sets included in my collection are Ekco ,Pam using the same chassis
One of my favourite models is the 12 with the plastic cabinet and I believe this May of been the first with a direct view crt ( no implosion guard)
I’ve included some photos of some of the sets I have
You may notice the 3rd photo is the model 3 and has never had the uhf tuner fitted
Chris ( The Teleman )
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Old 28th Jan 2024, 9:04 pm   #44
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Default Re: REBUILDING A 1965 FERRANTI T1137 “PYE 11U” SERIES 405-625 line CHASSIS TV

No Stella versions?
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Old 29th Jan 2024, 8:42 am   #45
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Default Re: REBUILDING A 1965 FERRANTI T1137 “PYE 11U” SERIES 405-625 line CHASSIS TV

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Originally Posted by Red to black View Post
No Stella versions?
Stella was a brand name used by Philips for the wholesale distribution sector, it was never used by Pye. Stella sets were styled somewhat differently to their Philips branded equivalent product, but were usually pretty obviously made by Philips.

Around 1968, after Philips acquired control of the Pye of Cambridge group, Philips discontinued use of their Stella brand and thereafter, imported Philips manufactured items (such as open reel and cassette tape recorders) were then branded Pye. Some Philips made items also appeared under the Ekco brand.
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Old 31st Jan 2024, 2:44 pm   #46
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Default Re: REBUILDING A 1965 FERRANTI T1137 “PYE 11U” SERIES 405-625 line CHASSIS TV

Quote:
Originally Posted by The teleman View Post
As some of you know I have been a collector of Pye sets for many years and this chassis is one of my favourite ones.
I have quite a few models from the model 3 through to the large radiogram tv model 28 - all use this chassis.
Other sets included in my collection are Ekco ,Pam using the same chassis.
One of my favourite models is the 12 with the plastic cabinet and I believe this May of been the first with a direct view CRT (no implosion guard).
I’ve included some photos of some of the sets I have
You may notice the 3rd photo is the model 3 and has never had the UHF tuner fitted.
Chris (The Teleman)

That’s a nice selection of 11U chassis sets Chris.

I had a TV12 (plastics cabinet) a few years ago. Wish I’d kept it now!
There was an export set (different chassis) that used the same basic moulded cabinet as the TV12.

Does your model 3 use the earliest version of the 11U chassis, with an unstabilised line timebase and EY86 EHT rectifier, or the later production chassis, with a stabilised line timebase and DY86 EHT rectifier circuit?

The final photo is the Ekco 19” version of the Ferranti T1125 23”set, which I used the chassis from to transplant into my Ferranti T1137 (albeit with the Ekco rather than original Philips VHF tuner).

Ekco branded sets seemed to continue to use a flat glass implosion protection window for rather longer than the other brands (instead of a (thin) Fenbridge guard, thick plastic moulded implosion window or a Twin Panel CRT with its permanently bonded implosion protection).
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Old 1st Feb 2024, 11:35 pm   #47
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Default Re: REBUILDING A 1965 FERRANTI T1137 “PYE 11U” SERIES 405-625 line CHASSIS TV

There’s a mistake in my model numbers the one I quoted as being a model 3 is actually a model 15w/f with a flywheel sync pcb fitted

Dave , the model 3 has a duff loptx at the moment it’s with mr barker at the moment having a rewind but I think it may of had a replacement lopt at some stage and it certainly looks like a DY86/7 is fitted

Other models I have are the 11u ,20u , 28 and an Ekco T418
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