For questions about component-level electronic circuits, tools and equipment.
1: Be nice.
2: Be on-topic (eg: Electronic, not electrical).
3: No commercial stuff, buying, selling or valuations.
4: Be safe.
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
I'm not sure exactly what you're asking, and I probably don't know the answer anyway, but I felt compelled to add a safety warning for anyone working with these.
The CRTs themselves can hold a high voltage for a long time, please be very very careful.
Those look like CRT units without cases, which is slightly terrifying. Be careful.
What's on the back of it (i.e. connectors) and what country are you in? (i.e. PAL, SECAM, NTSC)
Likely connectors are RF aerial, BNC, component, composite. Maybe s-video?
Assuming they still work and power on safely, you may find the issue is in generating a signal that they accept, with modern equipment. This depends a little on what you're planning on using them for, and therefore what you want to connect them to.
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
VGA might be a good idea. Do you think that these are just regular 640x480 displays? Can I damage them with a wrong resolution?