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Atari 2600 6 Switch Motherboard Drop in Replacement Project


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I didn't get too much traction in the Atari 2600 specific sub-forum, so I'll try here. This is original post.


But I still need help verifying replacement parts as I try to use modern and readily available replacements for everything except the 3 main IC's for obvious reasons. I'm fairly positive most of these parts I've found will work but some things I'm not 100% on, like the replacements for the Styrene Caps and NPN transistor. In addition to still needing to find a replacement for the power jack, cartridge connector, and adjustable inductor.


So any help or suggestions is greatly appreciated


Reference Designator Original Description/Part number Potential Replacement Link                
A203 Buffer/C010816 (4050B) https://www.digikey.com/en/products/detail/onsemi/MC14050BDR2/11523310      
C204 Mylar Cap .1u 100v (21-101104M) https://www.mouser.com/ProductDetail/KEMET/MMK5104J100J01L15.0CBULK?qs=XYa9guDHUMwv0FaGsaMGvw%3D%3D
C201 Electrolytic Cap 4.7uF 35v (C010336) https://www.digikey.com/en/products/detail/panasonic-electronic-components/EEU-EB1H4R7SB/2689398
C206, 207 Styrene Caps 820pF 50v (C010821) https://www.mouser.com/ProductDetail/Vishay-Vitramon/VJ0805D821KXAAJ?qs=sGAEpiMZZMs7ZEmUmaUL09qlKXKscFs3tgcyC0RYJ8U%3D
C215-218 Mylar Caps .068uF 100v (C014353) https://www.digikey.com/en/products/detail/kemet/R82EC2680DQ60J/3877102      
CR200, 201 Diode 1N914 (31-1N914) https://www.digikey.com/en/products/detail/onsemi/MMSD4148T1G/919705      
CR202, 203 Zener Diode 1N4736 6.2v (C017654) https://www.digikey.com/en/products/detail/micro-commercial-co/SMAJ4736A-TP/950463    
L200, L203 Ferrite Bead (C014384) https://www.digikey.com/en/products/detail/tdk-corporation/MLZ1608N1R0LT000/2523491?s=N4IgTCBcDaILIBkBaBGAbABgBwDsUCcMAbAFw3JAF0BfIA
L202 Inductor 2uF (C010822) https://www.digikey.com/en/products/detail/eaton-electronics-division/SD53-2R0-R/1555485  
Q200, 201 PNP Transistor 2N3906 (C018991) https://www.digikey.com/en/products/detail/diodes-incorporated/MMBT3906-7-F/770797    
R211 Resistor Variable 500K (19-411504) https://www.digikey.com/en/products/detail/bourns-inc/3352T-1-504LF/1088353?s=N4IgTCBcDaIMxwKxgC4FoCMbEAYAsANgGYgC6AvkA
X200 Crystal 3.579575 (C015510) https://www.digikey.com/en/products/detail/ecs-inc/ECS-35-17-4/27508      
J202, 203 Socket Controller (9 Pin) (C010727) https://www.digikey.com/en/products/detail/te-connectivity-amp-connectors/5745001-3/1123779?s=N4IgTCBcDaIKwHYAscAMqCMBaAzCAugL5A
Q202 NPN Transistor MPS3563 (34-MPS3563) https://www.digikey.com/en/products/detail/rochester-electronics-llc/MPS3563RLRAG/12118458 Is there an SMT option?
J204 DC Power Jack (79-5918) ?                  
L201 Adjustable Inductor 12 1/2 Turn .6-1.2mh or uh variable sound coils (C010823) https://www.mouser.com/ProductDetail/Coilcraft/143-16J12L?qs=ZYnrCdKdyedGtyVQ9HC7dA%3D%3D  
  Cartridge Connector ? https://www.digikey.com/en/products/detail/sullins-connector-solutions/EBC12DCWN/927256


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  • 3 weeks later...

This thread has the same name as the first one you made so I assumed it was the same and just got moved. Have you seen this topic? 

It seems like it's mostly 3D printed, maybe the files are floating out there on the internet.

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On 9/7/2023 at 5:43 PM, M-S said:

This thread has the same name as the first one you made so I assumed it was the same and just got moved. Have you seen this topic? 

It seems like it's mostly 3D printed, maybe the files are floating out there on the internet.

I've seen that. What that one does is just create the shroud around the "standard" connector. I already had linked in my list of parts. That doesn't actually do anything except allow the dust flaps on certain games to be engaged/alight the cart into the connector a bit better. That works fine as a free standing unit like it is. But to get a board to be a drop in replacement to the original, the connector itself would have to be shaped entirely different than what is used there with respect to how its soldered to a PCB.

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I didn't notice that, have you seem which connector is inside of the Retron77? From the few pictures of the motherboard out there it doesn't look like the same connector, but it is a dumper console, so I could be wrong. Maybe there could be a code or a name on it. Or you could buy the one that doesn't fit, remove the plastic parts and see if you can design one that would work. Once the 2600+ releases maybe the company that manufactures it could start making spare parts too, if it doesn't flop.

But first don't you think you could buy a console that's completely unfixable and use it's parts just to have a functional prototype? I think more people would be interested on it and willing to help.

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