Let's start taking apart the VideoWRITER and see what boards we will find. I won't go into too much detail on the boards in this log, just a quick first look at them.
After removing the cover let's start by discharging the CRT. It probably holds little to no charge since it's been switched off for a while, but I'd rather be safe than sorry. I have my trusty screwdriver connected to a length of thick wire and an alligator clip at the other end for this job. I connect the aligator clip to some of the metal frame and squeeze the screwdriver under the anode cup of the CRT. No clicks or pops from this one that suggest a charge, but I always repeat this process at least ones after a minute or so just to be safe.
Ok now we can safely start touching things and taking the boards out. First up is the power supply. Just two screws to remove here and the PCB comes out. I should mention that this is the second time that I remove the power supply. When I was testing the VideoWRITER a couple of weeks ago before putting it up for sale one of the caps violently exploded. There was a lot of smoke and that special smell of burnt electronics. Luckily I had a spare cap in my parts bin so I was able to replace it (it's the red cap in the top middle of the board). The power supply was working again, but whether there are still other problems with this board that caused the cap to blow is still a mystery.
The monitor chassis almost made me go "aww that's cute" just because it's such a small and simple looking board compared to other monitor chassis's I've seen. Of course it's just a monochrome CRT, but for example up to now I've only seen assemblies where there is a neck board that plugs into the CRT instead of just a plug. Also all the common adjustment pots for the video signal are there. The board has a 10 pin edge connector that connects to the main board of the VideoWriter. It would be interesting to see what the pinout is of that one. What intrigued me was finding a 556 (dual 555) timer chip on the board. Maybe for some video signal timing?
This board was actually not found under the cover, but directly under the printer mechanism. It's not very interesting I think. It connects from the main board through a big ribbon cable and from there goes to the motors, paper feed buttons, printing contrast slider, cartridge cradle, end stops and paper sensor. I'm just stalling for the best part...
The main boad of the VideoWRITER is very interesting I think. I will spend the next logs on it. For now enjoy the board still covered by its shield and the other components spread over the garden table. But you can tell that there are at least two rom chips on the main board peaking throught the shielding. You can also see what remains in the unit: the CRT and the floppy drive.