| Click here to select a new forum. |
| Macintosh 128K screen trebling |
Posted by: juanmas on 2019-02-24 05:42:27
Hi there!
I’ve turned on my 128k and noticed that the screen is trebling. I get dizzy looking at the screen. I think it could happens by the fly back capacitor but not sure. None capacitor has been replaced.
Any idea?
|
Posted by: juanmas on 2019-02-24 13:10:50
Ok,
I left the Macintosh on for a hour but the trembling remains. So I’m not sure it could be a Capacitors issue. The screen is trembling with the maximum brightness or with normal brightness. I doesn`t goes worst using the floppy disk.
Someone can help?
|
Posted by: Johnnya101 on 2019-02-24 13:20:35
I suppose it could be a bad ground. That would be easiest to check. Remove the case and locate the ground wire and bolt, and tighten it. See if that makes a difference.
Is it possible to get a video? Would help a lot.
|
Posted by: jack on 2019-02-24 13:49:53
Try re-soldering the yoke plug on the A/B... that is, completely remove the old solder and add new.
You could also try re-soldering the flyback while you are in there. Those are the first two things I would check before capacitors, etc.
|
Posted by: juanmas on 2019-02-25 07:11:28
Ok it’s weird,
I’ve took the Macintosh apart and left it at the floor because I need the table. Now I’ve took it again back to the table and now the screen is perfect!!
It’s possible the ground wire as Jhonnya101 said.
View attachment 023CB779-4BAB-4F3B-B516-420059AB0CC9.MOV
|
| 1 |