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
1971 Bush CTV1120
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
1971 Bush CTV1120
Tech Chat Manufacturing your own PCB
I doubt if anyone would go to trouble of making a complex printed circuit board by using the old method of laying on pieces of crepe material on the grid pattern. sheet. Made sometime in the late eighties or early nineties a 405 sync and blanking board for a 405 line converter project. No CAD assistance.
Till Eulenspiegel.
I remember my colleagues at work doing just that though - and a step below that was the "Dalo" pen. Later on, when CAD packages and UV-sensitised boards became available a couple of friends made their boards using laser-printable OHP film, being careful not to accidentally produce a "Doppelganger*" and passing the film twice through the printer to get sufficient density.
*this was where you accidentally produced a mirror-image of the track layout.
Posted by: @cathovisorLater on, when CAD packages and UV-sensitised boards became available a couple of friends made their boards using laser-printable OHP film, being careful not to accidentally produce a "Doppelganger*" and passing the film twice through the printer to get sufficient density.
This is what we did on my GCSE electronics course in the early 90s, except that we used a plotter to create the transparency.
I understand the BBC digital 625 to 405 line converter PCB artwork was made in a similar manner.
Till Eulenspiegel.
@till It's a pity D&ED no longer exist to ask them, unless there's an issue of Eng Inf that mentions it: when they were the only show in town you could understand the BBC making all its own equipment. I think one of the last studios to use BBC Coded Equipment was TC5 in its last analogue refurbishment in 1986. It also had a digital video decoder and a digital vision mixer (called a "combiner") for the graphics area.
It was certainly using the BBC-designed analogue video DAs right up to its closure in 2011.
The only pic I have of my prototype attempts from 2013. I used a CFL bulb as a UV exposure and it worked very well. I drew this in MS Paint and printed it onto an overhead projector transparency. The big gap in the bottom left was eventually used for something else.
Many years ago I constructed the PW mag Tele-Tennis, lots of TTL ICs on several boards. They were drawn by hand with a Dalo pen and although not pretty they worked. later I tried those rub on pads and tracks but were a bit of a pain.
I'm currently working on a replacement field board for Chris's 4000 using the toner transfer method. I've not attempted this before but seems to be possible to produce good results. Unfortunately I don't have a laser printer but a work colleague is helping me out with this.
John.
Posted by: @cathovisor..... being careful not to accidentally produce a "Doppelganger*" .
Something woke me at 3am the other day and that exact thing came to mind and that I needed to mirror the design 👍
John.
Posted by: @jayceebeeMany years ago I constructed the PW mag Tele-Tennis, lots of TTL ICs on several boards. They were drawn by hand with a Dalo pen and although not pretty they worked. later I tried those rub on pads and tracks but were a bit of a pain.
*shudders* oh I remember the rub on pads and tracks! Took about 10 times as long to draw something out. I preferred the stencils but even then I'd just use it for the pads and still draw in the tracks by hand.
Posted by: @jayceebeeI'm currently working on a replacement field board for Chris's 4000 using the toner transfer method. I've not attempted this before but seems to be possible to produce good results. Unfortunately I don't have a laser printer but a work colleague is helping me out with this.
My Father in-law (ex-technology teacher) has had really good results with this. He doesn't even bother removing the toner from the copper afterwards apart from the actual solder pads. He's found takeaway menus seem to work best to print the toner onto first before transferring it to the copper clad board.
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