68kMLA Classic Interface
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| Click here to select a new forum. | | Macintosh Portable, Backlight Issue | Posted by: uniserver on 2013-02-02 15:45:25
Just got this portable in,
I plugged it in to test it, back light worked.
I popped in a 6.0.8 floppy disk and it drew just enough power to reset the system.
After the reset the back light was out,LCD screen still works...
The 6v lead/acid battery is not good.
Anyways, so I pulled the logic board out, it was badly in need of a recap. Done.
It now boots just fine from a 6.0.8 disk, however.
Back light is still out, not working after the re-cap
I opened up the screen to look at the inverter board, nothing looks smoked, and the 2 10uf16v rubycon radial caps look fine on the inverter board.
i ended up installing 6.0.8 to see if maybe there is a Back Light Brightness Slider that might some how be down,
i am not seeing this panel, all i saw was a screen contrast slider it was all the way up.
anyone ever have a issue with a back light in one of these?
Thanks
| Posted by: Macdrone on 2013-02-02 19:08:07
I thought I read somewhere it was lauded with 6.0.8 so trying 7 or 7.1 may fix the issue until you can find the specific portable disk.
| Posted by: CelGen on 2013-02-02 20:32:04
Perhaps the surge nuked a fuse on the backlight inverter card?
| Posted by: uniserver on 2013-02-02 22:07:03
ah yeah, i didn't think to check for a fuse,
anyone had this happen before with an inverter board in general?
also what might the fuse look like,
Thanks for your help by the way.
I would assume it would be labeled F for fuse? just like R for resistor and C for cap?
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