Thanks for your reply.
I have already resoldered the connectors on the analogue board (J1 and J4?).
It is of course possible that I didn't do it properly. Basically the symptoms before and after were identical.
I NEVER get the blank screen anymore. At first I had to hit it to get a picture. After that it would be very unstable when it stood on top of its external hard disk (an SC 20).
Now however, I always get a screen, but it is unstable (as shown in the video) for the first 5 or 6 minutes. After that it is perfect. Tapping it, operating the floppy drive etc. have no effect on the screen.
These are pictures of my soldering for your amusement:
I have already resoldered the connectors on the analogue board (J1 and J4?).
It is of course possible that I didn't do it properly. Basically the symptoms before and after were identical.
I NEVER get the blank screen anymore. At first I had to hit it to get a picture. After that it would be very unstable when it stood on top of its external hard disk (an SC 20).
Now however, I always get a screen, but it is unstable (as shown in the video) for the first 5 or 6 minutes. After that it is perfect. Tapping it, operating the floppy drive etc. have no effect on the screen.
These are pictures of my soldering for your amusement: