this post was submitted on 10 Aug 2025
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How do I get these Crts to display an Image? (lemmy.ohaa.xyz)
submitted 1 month ago* (last edited 1 month ago) by Oha@lemmy.ohaa.xyz to c/askelectronics@discuss.tchncs.de
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I recently got a bunch of old 80's crts which I cant find any information about online.
I do have the service manual tho link
Looks like standart composite with external Horizontal and Vertical Sync to me but I'm not 100% sure and I dont want to fry anything

Thanks,
Oha

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[โ€“] bitfucker@programming.dev 2 points 1 month ago (1 children)

Oh man, that manual is quite descriptive. I wish they could add a schematic or two there. But anyway, as others have suggested, be careful with CRT, but I guess you already know that. Next is from the circuit description, it seems like the display accepts some form or VGA signal without the color. You can see Ben Eater video to learn more about it, especially the line sync and vertical sync signal part

[โ€“] Oha@lemmy.ohaa.xyz 1 points 1 month ago

VGA might be a good idea. Do you think that these are just regular 640x480 displays? Can I damage them with a wrong resolution?