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Granada Television Brochure, 1970s
Long Gone UK TV Shops
Memories of a Derwent Field Service Engineer
PYE Australia Circa 1971
Radios-TV VRAT
Fabulous Fablon
Thorn TX10 Chassis
Crusty-TV Museum, Analogue TV Network
Philips N1500 Warning!
Rumbelows
Thorn EMI Advertising
Thorn’s Guide to Servicing a VCR
Ferguson 3V24 De-Robed
Want to tell us a story?
Video Circuits V15 – Tripler Tester
Thorn Chassis Guide
Remove Teletext Lines & VCR Problems
Ceefax (Teletext)
Suggestions
Website Refresh
Colour TV Brochures
1970s Lounge Recreation
CrustyTV Vintage Television Museum
Linda Lovelace Experience
Humbars on a Sony KV2702
1972 Ultra 6713
D|E|R Service “The Best”
The one that got away
Technical information
The Line Output Stage
The map
Tales of a newly qualified young engineer.
Tales of a Radio Rentals Van Boy
Sanyo SMD
Disastrous Company Rebranding
1969 Philips G22K511
Memories Of The TV Trade
Crazy house
Dirty TV screens
Dual Standard and Single Standard CTV’s
Radios-TV on YouTube
The Winter of 62/63
A domestic audio installation
1979 Ferguson Videostar Deluxe 3V16
Music centre modifications
Unusual record player modification
B&K 467 Adapters
Mishaps In The Trade
1971 Beovision 3200
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Invicta T105.
Recently acquired the chassis of an Invicta T105, the previous owner had to scrap the cabinet because of woodworm.
So it's going to be a new cabinet construction job. That'll be later this year. It'll be much easier if the dimensions of an existing T105 set are measured but if not I have the card cabinet back so it'll be possible to guess at the dimensions from that component.
The set works in a fashion but that old problem of faulty slider controls has manifested itself, the brightness and frame hold controls have failed Most likely rotary controls are the answer to that problem.
As can be seen in the first attachment the chassis fitted neatly into the limited space of the car boot. The second shows the appearance of an Invicta T105.
That makes a nice change from all the TV22's and LV/BV20's that often pop up on the forums, though I suspect its fairly similar to the latter. I see from the Valve Page its a TRF. So come David what's the bottle line-up and their functions?
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Till Eulenspiegel said
So it's going to be a new cabinet construction job.
No seriously, well done for obtaining a chassis and I'm looking forward to the progress of restoration.
Am I right in assuming this is pretty much the same as a Pye chassis?
To understand the black art of electronics is to understand witchcraft. Andrew.
Hi Andrew, that is the same question I was going to ask, the address on The Valve page is St Andrews road Cambridge so I thought it very well could be.
Frank
Very nice little Television, it looks very similar to the Pye from 1947, what valve is for the HV hor. out? my guess is EL38 maybe.
It´s a very big work to make a new cabinet, do you want to make it by your self ?
Alex 😉
Hi Alex,
Dead right, the line output valve is the EL38, actually the EL38M which is the metallised version. Other valves employed in the sound and vision receiver sections are the EF50 pentode and EB41 double-diode. Sound output an EL33. EF50s are used in the timebases as the line and frame oscillators, the frame output is also an EF50. The HT rectifier was a finned metal type, this component has failed and has been replaced with a silicon diode and series resistor.
The CRT is a Mullard MW22-14.
The signal circuits resemble the 1946 Pye model D16. The timebases are similar to 1948 Pye LV20 and like the LV20 the EHT comes from the line flyback. The set we're discussing was made or perhaps modified for the Holme Moss transmitter and therefore is aligned to channel B2. Versions of the T105 were made for the Birmingham transmitter.
Till Eulenspiegel.
Till Eulenspiegel said
Hi Alex,Dead right, the line output valve is the EL38, actually the EL38M which is the metallised version. Other valves employed in the sound and vision receiver sections are the EF50 pentode and EB41 double-diode. Sound output an EL33. EF50s are used in the timebases as the line and frame oscillators, the frame output is also an EF50. The HT rectifier was a finned metal type, this component has failed and has been replaced with a silicon diode and series resistor.
The CRT is a Mullard MW22-14.
The signal circuits resemble the 1946 Pye model D16. The timebases are similar to 1948 Pye LV20 and like the LV20 the EHT comes from the line flyback. The set we're discussing was made or perhaps modified for the Holme Moss transmitter and therefore is aligned to channel B2. Versions of the T105 were made for the Birmingham transmitter.
Till Eulenspiegel.
Haha i knew it, i know the national radiostation (later Radio and television station) in Denmark in late 1948 buyed 2 TV receivers from Pye for testing the transmitter they buyed from philips the same year, (they also buyed a kind of videomixer and two television cameras (iconoskope)
Alex
Till Eulenspiegel said
How about this? Some time ago a customer brought in an old bed head board, could use this to make the cabinet for the Invicta T105, or something else perhaps.Till Eulenspiegel.
Is there no limit to your ingenuity Till?
To understand the black art of electronics is to understand witchcraft. Andrew.
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