Murphy Line Output Transformer Replacement
1977/78 22″ ITT CD662; CVC30-Series
1982 20″ ITT 80-90 Model (unknown)
Retro Tech 2025
Fabulous Finlandia; 1982 Granada C22XZ5
Tales of woe after the storms. (2007)
Live Aerial Mast
Total collapse
What Not To Do
1983 Philips 26CS3890/05R Teletext & Printer
MRG Systems ATP600 Databridge
Teletext Editing Terminal
Microvitec Monitor 1451MS4
BBC Microcomputer TELETEXT Project
Viewdata, Prestel, Philips
Philips Model Identification
1976/77 Rank Arena AC6333 – Worlds First Teletext Receiver
PYE 1980s Brochure
Ceefax (Teletext) Turns 50
Philips 1980s KT3 – K30 Range Brochure
Zanussi Television Brochure 1982
Ferguson Videostar Review
She soon put that down
1983 Sanyo Brochure
Wireless World Teletext Decoder
Unitra Brochure
Rediffusion CITAC (MK4A)
Thorn TRUMPS 2
Grundig Brochure 1984
The Obscure and missing Continental
G11 Television 1978 – 1980
Reditune
Hitachi VIP201P C.E.D Player
Thorn 3D01 – VHD VideoDisc Player
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
Murphy Line Output Transformer Replacement
1977/78 22″ ITT CD662; CVC30-Series
1982 20″ ITT 80-90 Model (unknown)
Retro Tech 2025
Fabulous Finlandia; 1982 Granada C22XZ5
Tales of woe after the storms. (2007)
Live Aerial Mast
Total collapse
What Not To Do
1983 Philips 26CS3890/05R Teletext & Printer
MRG Systems ATP600 Databridge
Teletext Editing Terminal
Microvitec Monitor 1451MS4
BBC Microcomputer TELETEXT Project
Viewdata, Prestel, Philips
Philips Model Identification
1976/77 Rank Arena AC6333 – Worlds First Teletext Receiver
PYE 1980s Brochure
Ceefax (Teletext) Turns 50
Philips 1980s KT3 – K30 Range Brochure
Zanussi Television Brochure 1982
Ferguson Videostar Review
She soon put that down
1983 Sanyo Brochure
Wireless World Teletext Decoder
Unitra Brochure
Rediffusion CITAC (MK4A)
Thorn TRUMPS 2
Grundig Brochure 1984
The Obscure and missing Continental
G11 Television 1978 – 1980
Reditune
Hitachi VIP201P C.E.D Player
Thorn 3D01 – VHD VideoDisc Player
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
I got lucky with a KT66 !
A few days ago I spotted a Marconi KT66 on ebay being sold as "not working". I made an offer and obtained it for £15. Now, a casual glance will reveal that good original MOV KT66's are at a premium price as I'm sure you know.
However, I thought "what the hell" and got this valve just to see in what way it was "not working". Upon arrival it could be seen that the base had been re-glued at some previous time, rather neatly in fact. I tried the valve in one of my Quad II's and was surprised to see it warm up and appear to work perfectly. Presently, however, the heater went out. Moving the valve slightly made it work again. I removed the valve and de-soldered the pins to examine the base connections. It could be seen that a heater lead was not making a good solder join in the base pin. I re-soldered it and the remaining pins and the valve has been operating for an hour or so without issue.
My guess is that when the base was loose it had weakened the wire to pin solder connections. Anyway, a pure stroke of luck as it is of course not always possible to repair a faulty valve.
Here is the valve installed in the amplifier in the right hand socket, next to an existing Marconi.....
? ?
I've recovered a few octals in this way. Well done!
On a slightly similar note, I managed some time ago to repair a short-circuit Quad II smoothing block. I simply blew the short away by discharging another electrolytic across the terminals of the shorted section. It was a case of kill or cure, but I was lucky. Obviously it could have opened it completely. However, that capacitor block is still in use to this day without any further problems.
Will certainly dig out and re-check an earlier grey glass Marconi KT66 purchased second hand at an amateur radio rally many years ago.
Heaters on this one OK but absolutely zero emission. A visual inspection has limited success in identifying obvious faults such as a disconnected cathode, but will have a go at re-soldering the pins when I find it.
Brimar 6U4GT used to suffer badly with unsoldered pins (as did the Shure V15 III !)
Rich
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