XMD-1 Modded for rgb amp with Sega Mark III

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aleomark
Posts: 15
Joined: Sat Apr 04, 2020 10:34 am

XMD-1 Modded for rgb amp with Sega Mark III

Post by aleomark »

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Hi guys, as I found in my topic: viewtopic.php?f=6&t=66787
SuperDeadite wrote:XMD-1 is just pinout changer. Created as Sega didnt sell RGB cables for MD. The din8 output uses the MSX standard, which were easy to find in those days.
I came with the idea to mod my XMD-1 (since I didn't use it for nothing else)
I follow these topic as a guide:
https://nintendosegajapan.com/category/ ... ii/page/2/

I used one voultar's pce engine rgb amp chip
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and a PCE scart cable from retrogamingcables



Here are instructions, in case someone gets interested, I'm happy with my small experiment, because first it works, second a little contribution to the community with my little knowledge in electronics, the thing about XMD-1, is that I bought it thinking it made more things for my mark III, and I got disappointment when I found it was just a pin out changer, so for me it was a little black brick, and now its something useful.

Pros:
-looks fine as professional made
-you only need wires and a rgb amp chip (obviously soldering tools)
-you re-use the case (professional made, no 3d printed things), the 8pin connectors
-and if you have fm unit you could use the mini jack to redirect audio (I didn't make that connection now, cause I don't have one)

Cons:
-XMD-1 is a little expensive nowdays
-you loose the original function.

Instructions:

-De-solder the slim Black cable (audio), white (video) and orange (5v) cables.
-Solder the orange were white used to be in.
-cut the 4 traces as in picture (market as orange in PCB)
-place a cable from Ground (fat black cable) to "G"
-place a cable from Audio (slim black cable) to "A1" or "A2", then a cable bridge between "A1" and "A2". (if you have fm unit you could prefer isolate these cable and take audio from mini jack, you will need a cable like these to get audio from fm to xmd-1)


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-place a cable from Red, Blue, Green and Brown (sync) to the rgb amp.
-place a cable from 5v (orange) and Ground (fat black cable) to the rgb amp.

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also make 3 cuts to isolate the pins of the 8pin din connector as show in image:
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send cables from amp chip R, G, B and Sync (yellow) to the 8pin din
as here:

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(not my pic, take it from voultar pce video install, I forgot to take a picture from side of the 8-din)

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and that's it, close it carefully.


and here area some pics about the image quality, from a sony pvm:

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later I could add a video. Hope it can help someone in future.
aleomark
Posts: 15
Joined: Sat Apr 04, 2020 10:34 am

Re: XMD-1 Modded for rgb amp with Sega Mark III

Post by aleomark »

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UPDATE

now that I got a fm unit can finish the work.

-its easy, just need to solder a cable as you can see in this image like the green cable in "V" shape
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also a cable to conduct audio from fm unit to xmd-1 like these:

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here is a video with my little project:
https://www.youtube.com/watch?v=wbcBMPOTFyo
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