Yet another S-video mod (for A600/A1200)

Eriond · 22 January 2011, 20:58

This is not at all a new, cool, ingenious mod, but just a remake of an old one. It comes complete with schematics, board layout and a few pictures (all clickable for a mega-large version

)

For all of you who are familiar with Eagle, here are the sch and brd files.

If you prefer pdf, the fileset is here.

And this is how it looks when assembled:

...from the other side...

...and mounted in an A600...

as you can see, the connector is deliberatly offset to the left side. I plan to cover part of the large RF-mod hole with a piece if tin sheet.

A picture showing how the board acheives mechanical stability using a pair of trimmed M3 screws and nylon standoffs.

Here it is, screwed into the unused soldering holes for the NTSC RF-mod. (The PAL one is larger and uses a different set of holes.) The M3 creates a thread in the PCB, and makes the board fit really good!

Here it is, with power soldered from the former RF-mod pads and a pair of cables coming from the Sony chip. I fitted a standard 5-pole 2,54mm connector to make it serviceable in the future, but You can solder the cables directly to the board (if You have a good amount of self confidence

)

Happy modding!

/Eriond

mfilos · 22 January 2011, 21:22

Awesome mod mate! \o/
Very slick and pro for homebrew

rkauer · 23 January 2011, 04:22

A bit of green PCB varnish and this board may look as it is built-in on the Amiga from the very beginning!

Well done, Eriond!

Zetr0 · 23 January 2011, 06:11

Nice.... VERY Nice!!!

Cammy · 23 January 2011, 06:58

Great work, Eriond, what a perfectly cute design!

Allen1 · 23 January 2011, 14:08

That is BRILLIANT Eriond

I used to really enjoy building stuff like this and adapting ideas to suit what I had on hand at the time to construct the newest project. This S-video board is great, I have seen a similar one on here a while ago, but this one has the information and schematics etc. I would only make one change to the board if I built one, that's because as I have keyed connectors from an old video player and would use a 4 pin one so that the VCC would also be included in the one plug.

Something along the likes of this (Just altered and not to scale etc) :-

Eriond · 23 January 2011, 15:22

Thank You all for the kind replies!
@Allen1: Beware of the pin-to-pin distance so it will fit your connector. The Eagle default grid is 1.27mm.

@*: Feel free to make any changes you need to the design!

/Eriond

kipper2k · 23 January 2011, 16:11

Heres a pic of the cheapvid which uses a similar circuit. Picture quality is really good. Works on all regions, (obviously your TV must be of the same region in order to view colours)

www.kipper2k.com/forsale.html

PS. Don't solder the Chroma and Luma wires directly to the chip, there are good alternate points available, let me know the model number of your board and i should be able to show you a pic of the easier points (all A600 and A1200 boards have alternate points)

Allen1 · 23 January 2011, 17:16

Quote:

Originally Posted by Eriond

Thank You all for the kind replies!
@Allen1: Beware of the pin-to-pin distance so it will fit your connector. The Eagle default grid is 1.27mm.

@*: Feel free to make any changes you need to the design!

/Eriond

Hi there Eriond,

I only used Widows paint to move the holes so they are just meant as an example

the connectors I have are 0.1 pitch and shouldn't take much adapting of your design.

As I have said on similar posts, its easy to modify a project, the hard part is coming up with the initial layout like yours, modifying it to suit what you have on hand is a lot simpler than starting from scratch.

r0jaws · 24 January 2011, 00:27

A sudden urge to crack open my 600's case has gripped me.

Very nice neat mod there.

craggus2000 · 24 January 2011, 13:15

Quote:

Originally Posted by Eriond

This is not at all a new, cool, ingenious mod, but just a remake of an old one.

I'm looking at building this, but my SMD solder skills are awful

Would a 2N3904 transistor be the equivalent of the PMBT3904 SMD?

kipper2k · 24 January 2011, 14:08

Quote:

Originally Posted by craggus2000

I'm looking at building this, but my SMD solder skills are awful

Would a 2N3904 transistor be the equivalent of the PMBT3904 SMD?

Yes, that will work fine.

Matt020 · 31 January 2011, 16:15

got screen shots?

22 January 2011, 20:58	#1
Eriond Happy Registered User Join Date: Apr 2009 Location: Stockholm, Sweden Posts: 101	Yet another S-video mod (for A600/A1200) This is not at all a new, cool, ingenious mod, but just a remake of an old one. It comes complete with schematics, board layout and a few pictures (all clickable for a mega-large version ) For all of you who are familiar with Eagle, here are the sch and brd files. If you prefer pdf, the fileset is here. And this is how it looks when assembled: ...from the other side... ...and mounted in an A600... as you can see, the connector is deliberatly offset to the left side. I plan to cover part of the large RF-mod hole with a piece if tin sheet. A picture showing how the board acheives mechanical stability using a pair of trimmed M3 screws and nylon standoffs. Here it is, screwed into the unused soldering holes for the NTSC RF-mod. (The PAL one is larger and uses a different set of holes.) The M3 creates a thread in the PCB, and makes the board fit really good! Here it is, with power soldered from the former RF-mod pads and a pair of cables coming from the Sony chip. I fitted a standard 5-pole 2,54mm connector to make it serviceable in the future, but You can solder the cables directly to the board (if You have a good amount of self confidence) Happy modding! /Eriond

23 January 2011, 14:08	#6
Allen1 Registered User Join Date: Nov 2009 Location: Blyth England Age: 68 Posts: 786	That is BRILLIANT Eriond I used to really enjoy building stuff like this and adapting ideas to suit what I had on hand at the time to construct the newest project. This S-video board is great, I have seen a similar one on here a while ago, but this one has the information and schematics etc. I would only make one change to the board if I built one, that's because as I have keyed connectors from an old video player and would use a 4 pin one so that the VCC would also be included in the one plug. Something along the likes of this (Just altered and not to scale etc) :- Attached Thumbnails

23 January 2011, 16:11	#8
kipper2k Registered User Join Date: Sep 2006 Location: Thunder Bay, Canada Posts: 4,323	Heres a pic of the cheapvid which uses a similar circuit. Picture quality is really good. Works on all regions, (obviously your TV must be of the same region in order to view colours) www.kipper2k.com/forsale.html PS. Don't solder the Chroma and Luma wires directly to the chip, there are good alternate points available, let me know the model number of your board and i should be able to show you a pic of the easier points (all A600 and A1200 boards have alternate points) Last edited by kipper2k; 23 January 2011 at 16:29.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
a500 Video hybrid mod	kipper2k	Hardware mods	36	08 October 2023 10:08
Can anyone ID this A1200 s-video mod?	AmigaJules	Hardware pics	6	22 October 2008 03:16
My WIP A600 mod...	pertinax	Hardware mods	8	06 April 2008 12:17
A600 mod	ppill	Hardware mods	16	26 December 2007 14:20
A nice A1000 SVideo mod [Video].	ppill	Hardware mods	18	01 September 2007 18:06

22 January 2011, 21:22	#2
mfilos Paranoid Amigoid Join Date: Mar 2008 Location: Athens/Greece Age: 45 Posts: 1,978	Awesome mod mate! \o/ Very slick and pro for homebrew

23 January 2011, 04:22	#3
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	A bit of green PCB varnish and this board may look as it is built-in on the Amiga from the very beginning! Well done, Eriond!

23 January 2011, 06:11	#4
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	Nice.... VERY Nice!!!

23 January 2011, 06:58	#5
Cammy Registered User Join Date: Aug 2007 Location: Tasmania, Australia Age: 39 Posts: 1,189	Great work, Eriond, what a perfectly cute design!

23 January 2011, 15:22	#7
Eriond Happy Registered User Join Date: Apr 2009 Location: Stockholm, Sweden Posts: 101	Thank You all for the kind replies! @Allen1: Beware of the pin-to-pin distance so it will fit your connector. The Eagle default grid is 1.27mm. @*: Feel free to make any changes you need to the design! /Eriond

24 January 2011, 00:27	#10
r0jaws Amibay fanboi Join Date: Jan 2008 Location: Boston, Lincolnshire Age: 49 Posts: 154	A sudden urge to crack open my 600's case has gripped me. Very nice neat mod there.

31 January 2011, 16:15	#13
Matt020 Registered User Join Date: Dec 2009 Location: West Australia Age: 47 Posts: 210	got screen shots?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)