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Forum Free Registration Closed
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
Today, I tackled a mechanical repair that was needed. The slightly less than robust, shall we say, thinner plastic section of the channel change control had broken away from the thicker shaft of the knob. It is meant to grip the tuner shaft by the aid of a spring clip about it's circumference. I knew any attempt to glue the plastic back into place would be totally useless and it would break again upon channel change.
So, after some thinking, I decided to drill a slightly larger hole down into the much thicker section of the knob shaft to almost accomodate a brass insert taken from a chicken-head type of knob. I very carefully drilled a smaller hole in the side of the plastic shaft to allow the grub screw to fit. Then, I heated the brass insert just enough to soften the plastic as it was pushed slowly and gently into the larger hole.
Then, a hole had to be drilled in the fine tuning control shaft so as to allow access to the grub screw. Here, they can be seen about the tuner switch shaft.
Finally, the fitted control knobs with the cosmetic plastic end screw installed. Care had to be taken against pushing the brass insert too deep as this end screw would not sit flush to the knob otherwise. All in all, this took most of the afternoon with some careful measurements. I only had the one chance of getting it all correct. Naturally, access when the chassis is installed into the cabinet had to be considered and fortunately, this is ok.
To understand the black art of electronics is to understand witchcraft. Andrew.
This afternoon I cleaned the glass implosion guard and cabinet. It has come up rather well, despite being covered in brown nicotine. The chassis with CRT has been re-installed and for the first time in who know's how many years, the set is back to how it once was. It is indeed a very good performer and I can see why it probably remained in use well into the 70's.
To understand the black art of electronics is to understand witchcraft. Andrew.
Many of the 405 line only sets made in the late 50’s early 60’s were excellent performers, most of the early problems had been sorted out and components/valves had settled into decent items. When the obvious culprits, paper caps and a few carbon resistors sorted they can work very well.
Frank
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