Cool, makes sense to me, thanks.
2600 Composite mod
- rubber_jonnie
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Re: 2600 Composite mod
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
Re: 2600 Composite mod
Dinnertime now
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: 2600 Composite mod
Well we have video, kind of
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: 2600 Composite mod
Okay so that resistor I wasn't sure was needed or not, is actually needed then
Now to start dismantling the motherboard video circuit to rule out all this interference, hopefully..
EDIT:
Back to pole position as my "test game"..
Now to start dismantling the motherboard video circuit to rule out all this interference, hopefully..
EDIT:
Back to pole position as my "test game"..
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: 2600 Composite mod
So this seems to be picking up a lot of interference somehow, somewhere... But I'm not really sure of this interference is a problem with my monitor or not, as I see interference issues when my ST is connected..
So really it needs other people trying this out to see what video quality they get
So really it needs other people trying this out to see what video quality they get
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: 2600 Composite mod
OK so, added the caps on the bottom...
Picture quality has now dramatically improved..
I am basically at the point I was originally,Where the black seems too bright, but if I reduce the brightness level, obviously the colours go darker as well, and then I think it is too dark overall so there does not really seem to be a solution for this
I will start probing about to see if I can increase it any better...Though I think some of the vertical banding on the blue, is actually my monitor...
Picture quality has now dramatically improved..
I am basically at the point I was originally,Where the black seems too bright, but if I reduce the brightness level, obviously the colours go darker as well, and then I think it is too dark overall so there does not really seem to be a solution for this
I will start probing about to see if I can increase it any better...Though I think some of the vertical banding on the blue, is actually my monitor...
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
- rubber_jonnie
- Site Admin
- Posts: 10639
- Joined: Thu Aug 17, 2017 7:40 pm
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Re: 2600 Composite mod
My own comp mod has some interference too, not dissimilar to what you see, even with the tin back on.exxos wrote: ↑Fri Apr 26, 2019 1:52 pm So this seems to be picking up a lot of interference somehow, somewhere... But I'm not really sure of this interference is a problem with my monitor or not, as I see interference issues when my ST is connected..
So really it needs other people trying this out to see what video quality they get
Will get it done on my other 2600, see what comes out. Have you tried yours with the shield back on?
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
Re: 2600 Composite mod
Not yet, it may well help, im just trying to improve the colour.rubber_jonnie wrote: ↑Fri Apr 26, 2019 2:25 pm Will get it done on my other 2600, see what comes out. Have you tried yours with the shield back on?
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: 2600 Composite mod
My findings so far...
Grounding the oscillator seems to help tiny bit with colour and interference..
I also have a pot which is actually set to 660R In series with a 100pf (2x47pf) capacitors to ground.. This is odd as it seems be acting as a filter, as there seems to be a sweet spot when the black is at its most black point, but if you turn the black down too much, interference on the blue really starts to come back and starts to lose sync etc.
I'm now thinking towards cutting the MHz feed to the TIA and adding in some 33R to see the interference reduces or not...
Grounding the oscillator seems to help tiny bit with colour and interference..
I also have a pot which is actually set to 660R In series with a 100pf (2x47pf) capacitors to ground.. This is odd as it seems be acting as a filter, as there seems to be a sweet spot when the black is at its most black point, but if you turn the black down too much, interference on the blue really starts to come back and starts to lose sync etc.
I'm now thinking towards cutting the MHz feed to the TIA and adding in some 33R to see the interference reduces or not...
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: 2600 Composite mod
Looks pretty cleaar as it is though
If it ain't broke, test it to Destruction.