Atari 2600 6 Switch Motherboard Drop in Replacement Project

[Leatherrebel5150]

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
		https://www.mouser.com/ProductDetail/Xicon/23PS182?qs=VbcEA1k3avPcAZ98yxGp3g%3D%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

 

[M-S]

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.

[Leatherrebel5150]

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.

[M-S]

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.

[M-S]

https://atarirepairparts.com/

And here it is, it doesn't have the plastic part tough.