On Jun 10, 6:10 pm, Doug McNutt <[email protected]> wrote:
> At 15:48 -0700 6/10/09, Sterling wrote:
> >Is there a way to fix this? or do I just have a bad CRT?
>
> You have to remove the back. There is a FOCUS adjustment on the power switch
> side that might help. Often repeated caveats about high voltage apply.
On the Mac Plus, (don't know if the SE/30 is similar) there are two
resistors which are involved in the focus control which often fail.
So the situation goes something like: Focus is bad, user adjusts
focus, adjustment makes no difference, possibility branches from here
depending on whether user has the resources to discover the resistors.
But in this case, because it's only middle of the screen, I think
folks' suggestions about EM interference is a good thing to check.
Usually, when the focus adjustment is off, the edges are more out of
focus than the center.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Vintage Macs group.
The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our
netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/vintage-macs?hl=en
Low End Mac RSS feed at feed://lowendmac.com/feed.xml
-~----------~----~----~----~------~----~------~--~---
