[comp.sys.mac.hardware] MAC SE Screen Jitters - HELP!

scb1@tank.uchicago.edu (Sam Blackman) (04/08/90)

In article <15152@phoenix.Princeton.EDU> jklee@phoenix.Princeton.EDU (James Kin Wah Lee) writes:
>I have a problem that somebody must have come across before.  Over the
>
>(1) Thin horizontal to subhorizontal "white" lines which slowly migrate
>up and down the screen from both the top and bottom of the screen.
>These are generally accompanied by screen flicker, and the lines appear
>randomly but often enough to be annoying.
>
>(2) The screen sometimes becomes slightly compressed (horizontally) and
>then "snaps" back to normal-looking display. 
>
Well, after living for 2 1/2 years, it sounds to me like the analog board
on your Mac is about to die.  While not a serious problem, it is somewhat
costly depending on where you go to get it fixed.  At the U. of C. Service
center (where I work), it would run you about $225 (with 8% tax).  

Usually, lines and fade-in-out, and sudden screen loss is indicative of
an analog board about to die.  The true sign of death is a thin, bright
vertical (or horizontal line) while everything else is OK (hard drive
boots, Mac makes normal sounds, etc.).

Does anybody who's every done board-level repairs on Macs know what exactly
dies on these analog board ?

Sam


-- 
Samuel C. Blackman        ! InterNet : scb1@tank.uchicago.edu   Link : UG0184
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RBAUER@oregon.uoregon.edu (Robert Bauer) (04/10/90)

>>(1) Thin horizontal to subhorizontal "white" lines which slowly migrate
>>up and down the screen from both the top and bottom of the screen.
>>These are generally accompanied by screen flicker, and the lines appear
>>randomly but often enough to be annoying.
>>
>>(2) The screen sometimes becomes slightly compressed (horizontally) and
>>then "snaps" back to normal-looking display. 
>>
> Well, after living for 2 1/2 years, it sounds to me like the analog board
> on your Mac is about to die.  While not a serious problem, it is somewhat
> costly depending on where you go to get it fixed.  At the U. of C. Service
> center (where I work), it would run you about $225 (with 8% tax).  
> 
> Usually, lines and fade-in-out, and sudden screen loss is indicative of
> an analog board about to die.  The true sign of death is a thin, bright
> vertical (or horizontal line) while everything else is OK (hard drive
> boots, Mac makes normal sounds, etc.).
> 
> Does anybody who's every done board-level repairs on Macs know what exactly
> dies on these analog board ?
> 
Soft Solutions @ 907 River Rd. #98, Eugene, OR   97404  (503) 461 1136 has an
upgrade/repair kit for both SE and Plus/512/128K Macs.  The kit includes 
the components that typically fail but 'heavy duty' versions with either
a higher voltage/current/or lifetime rating from the manufacturer.  They also
offer a board repair with 1-yr warranty for $125.