zippysticks
Veteran Member
I'm really glad that all the IC's in this machine are socketed....
Strange video output on this Europlus. The machine seems to work in every way (starts up, beeps, responds to keyboard, loads and runs files from disk etc.) but has a messed up video output - see picture.
The screen appears as two replicas vertically with a squashed version of the characters displayed in both halves of the screen.
I'm working my way through the video section of the repair guide but its slow going - anyone seen this before ?
Interestingly, this machine came with a Videx videoterm 80 column card that when installed in this machine and its output switched on (in slot 3) using PR#3 , the 80 column picture view is superb.
I'm not quite sure how much of the onboard video circuitry is replaced by this card to narrow down my fault finding. I suppose its possible its a RAM issue too of course, but difficult to run the RAM test disk with this screen corruption.
By the way, if anyone can recommend a reasonably priced 74 series IC testing device I'd be interested - I have quite a few IC's to remove, test and replace.
Thanks
Strange video output on this Europlus. The machine seems to work in every way (starts up, beeps, responds to keyboard, loads and runs files from disk etc.) but has a messed up video output - see picture.
The screen appears as two replicas vertically with a squashed version of the characters displayed in both halves of the screen.
I'm working my way through the video section of the repair guide but its slow going - anyone seen this before ?
Interestingly, this machine came with a Videx videoterm 80 column card that when installed in this machine and its output switched on (in slot 3) using PR#3 , the 80 column picture view is superb.
I'm not quite sure how much of the onboard video circuitry is replaced by this card to narrow down my fault finding. I suppose its possible its a RAM issue too of course, but difficult to run the RAM test disk with this screen corruption.
By the way, if anyone can recommend a reasonably priced 74 series IC testing device I'd be interested - I have quite a few IC's to remove, test and replace.
Thanks