68kMLA Classic Interface

This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.

Click here to select a new forum.
Classic - Mac SE HDFD: CRT swap?
Posted by: ironborn65 on 2023-01-05 01:15:24
Hi mates,

I have a cracked CRT of a Mac SE HDFD and a spare one from a Classic.
Can I replace the Mac SE CRT with the one from the Classic?
The resolution is the same but ...
Are the pins of the joke compatibile/equivalent?
Can I keep the coils or should I move the ones from the Se CRT to the Classic one?

"to be or not to be?"
thanks
Posted by: Zitruskeks on 2023-01-05 02:06:54

The Compact Mac CRT Guide

To the moderators: Please consider making this a sticky as these questions get asked quite frequently on here. There have been some recent discussions about the CRTs used in compact Macs, specificallly in reguards to compatibility between machines. Having worked inside of dozens of compacts, I...
68kmla.org 68kmla.org
Posted by: ironborn65 on 2023-01-05 16:30:34
sure, thanks for pointing this out, the moderator will decide what to do ... have we a moderator?

Anyhow, the broken CRT from the SE is a Clinton as the Classic and both have the same exact model number, there is small difference in the serial number: they are very close to each other.
The CRT from the Classic comes from the rev B board and from the thread it should not be compatible with the SE:
Still the plug for the CRT coils are the same,.
In the Classic the wires of the joke are soldered to the board, while the SE has a nice plug.

So, I'm tempted to simply swap the CRT, the only check I'll do first is to verify that the two small board in the CRT have the same circuit.
Any one can share their experience?

PF

1672964826933.png1672964851706.png

1672964889126.png




1672964938981.png
1672964960511.png
1672964979673.png
Posted by: joshc on 2023-01-05 23:59:23
The CRTs are swappable. It’s the yoke connector that can differ on Classics depending on the revision of the analog board but using that CRT with an SE is fine.
Posted by: ironborn65 on 2023-01-06 00:52:28
thanks so much @joshc 🙂
Posted by: ironborn65 on 2023-01-06 10:52:50
the transplant of the CRT from a Classic to a SE HDFD worked like a charm!

thanks you all
PF
1