I was selling a Sega Genesis earlier and someone PMed me this question:
"Which revision is it? 1,2, or 3?"
How do I tell between Sega Genesis Revisions?
I was selling a Sega Genesis earlier and someone PMed me this question:
"Which revision is it? 1,2, or 3?"
How do I tell between Sega Genesis Revisions?
1st revision:
Headphone jack
AUX port marked A/V OUT
9-pin EXT. port on early models
Reset and start buttons are gray
"Sega Genesis" in white on top of machine below cartridge slot
Model number MK-1601 is made in Japan, newer revisions were made in Taiwan to cut production costs
2nd Revision:
New square shape
No headphone jack
One custom multi-output for picture and sound
Has a red power LED between the power and reset buttons
"Genesis" in square above cartridge slot
Model number MK-1631
3rd Revision:
Smaller square shape
No expansion port
No headphone jack
No power LED, but there is a red mark underneath the power switch, which becomes visible when the Genesis 3 is turned on
One multi-output for picture and sound. It has the necessary pin outs to be able to use the Genesis 2 Stereo A/V cable [1]; though an apparent revision of the Genesis 3 was manufactured that is incompatible with stereo sound, despite also having the pinouts
Does not support Sega CD, Sega 32X or Power Base Converter
"Sega Genesis 3" below cartridge slot
Model number MK-1641
Does not support Game Genie device
In addition, Japanese Megadrive cartridges (which do not contain an internal region lockout) can be played without a converter or modification, as the cartridge slot, which is the same shape as the original Japanese console, allows for these cartridges to be inserted freely.
Source:
Variations of the Sega Mega Drive - Wikipedia, the free encyclopedia