12-02-2022, 04:42 PM
A nice looking Microbee, congrats 
To answer your questions,
1. Yes thats the Colour expansion board. The smaller board is the Viatel board. But you have ROM H which would of been the Viatel ROM replaced with the EDASM rom.
2. Yes its CGA out, for pin out see the file microbee_colour_socket_connections.pdf in the Repository in the MbeeTech\Microbee\Documentation\Articles\Technical folder.
3. If the monitor is Composite, then its connected to the Bee via RCA plug on the grey lead with the 5 pin DIN plug at the one end.
4. No caps need to be replaced specifically though the small Tantalum caps can explode and/or catch on fire when powered up. So replace if they do. Normally the ones near the voltage regulators on the top core board or the ones under the left & right sides of the keyboard.
5. I use the CGA to VGA unit sold by Microbee Systems - CGA to VGA Video Converter - Microbee Technology - The home of the Microbee computer - Online Store though it appears hes out of stock at the moment.
6. Yes all the Schematics etc you need are in the Repository.
7. Pins not soldered, hmm I have no idea why not as one of my boards are the same, I think they are there to help line up the other pins that actually connect to the board.
To answer your questions,
1. Yes thats the Colour expansion board. The smaller board is the Viatel board. But you have ROM H which would of been the Viatel ROM replaced with the EDASM rom.
2. Yes its CGA out, for pin out see the file microbee_colour_socket_connections.pdf in the Repository in the MbeeTech\Microbee\Documentation\Articles\Technical folder.
3. If the monitor is Composite, then its connected to the Bee via RCA plug on the grey lead with the 5 pin DIN plug at the one end.
4. No caps need to be replaced specifically though the small Tantalum caps can explode and/or catch on fire when powered up. So replace if they do. Normally the ones near the voltage regulators on the top core board or the ones under the left & right sides of the keyboard.
5. I use the CGA to VGA unit sold by Microbee Systems - CGA to VGA Video Converter - Microbee Technology - The home of the Microbee computer - Online Store though it appears hes out of stock at the moment.
6. Yes all the Schematics etc you need are in the Repository.
7. Pins not soldered, hmm I have no idea why not as one of my boards are the same, I think they are there to help line up the other pins that actually connect to the board.
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ChickenMan
ChickenMan