SEGA Mega Drive - Jailbar Fix - Model 1 (PAL VA4) Triple Bypass

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In this video we'll have a go at installing a triple bypass into a SEGA Mega Drive / Genesis Model 1. In an attempt to clean up our video signal and remove the jailbar artifacts.
Late getting this project finished. Storms and power outages delayed finishing the work and editing the video but happy with the results.
#SEGA #MegaDrive #Genesis #RETROGAMING

Опубликовано:

18 дек 2021

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Комментарии : 50

@3vi1J 2 года назад

Glad you paused and zoomed in - I wasn't seeing them at first. The compression makes the jailbars less visible during the moving fullscreen images, even at 1080p. Then again, my old eyes have their own graphical artifacts nowadays. :)

@mickabajerski4985 2 года назад

MY MAN, DAYBREAK FROM ALPHA 3, Emotion mode on

@davieslm 2 года назад

Excellent video! Just managed to pick up mint Japanese Model 1 (first run) Mega Drive. It came with a cheap generic scart lead and when I hooked it up to an LCD it had strong vertical lines evenly spaced throughout the entire image from left edge to right edge. I was hoping that these were just 240p /480i scaling issues.

@Four_X 2 года назад

Wow the video from the Mega Drive look great Dermot. Think I'll fit one in my spare Mega Drive's.

@GodKitty677

I have a stock PAL VA4 that has no jailbars and audio with zero noise. I got all the mods as well, yet to install them.

@segajcharrua 2 года назад

you can still use the original din. You just have to cut the traces on the din connetor and run wires from the minidin output. also about still using the volume slider its possible there are some components to add on the board. José Cruz and tien fang have posted on how to do it.

@davethebulb Год назад

Instead of lifting the RGB pins I simply removed the 3x 5.6k pull-up resistors from the underside of the board and soldered to the pads, thus removing the original DIN form circuit. I then added 3x 5.6k resistors to the 3BP V2 board between 5V and RGB out.

@emmettturner9452 2 года назад

Please revisit this with Tianfeng’s RGB fix that he posted back in November.

@flyback777 Год назад

Great video! What cable are you using from the mini-din to your tv?

@noobguy57 Год назад

what pins specifically did you add those 2 caps to? i might try it on my end but i can't quite tell exactly what pins they are. I can look on the datasheet and see what they lead to but I can't count the pins from the video haha. thank you sir, great video!

@StRoRo

I often wondered if the triple bypass would benefit a MD1. I have the voultar one on my VA4 but there are still jailbars but much better.

@RWL2012 2 года назад

This MD1 VA4 PAL is a 1991 one with Motorola MC68000, like Nostalgia Nerd's one.

@GameTechRefuge 2 года назад

Dislike? Thumbs up here. **There's a follow up video to this one in the works, to reintroduce the 5.6K pull up resistors. Many of the solutions I found online are effective but very ugly. So I'm looking into creating something neater.