eR1c
Well-known member
I recently purchased an SE w/ Superdrive locally for $30. This computer has dual 1.44 floppy drives and has an internal 30meg HD (after opening up the machine it appears the HD was not apple OEM but added).
The computer worked fine but had one annoying issue, that is the display would appear slightly jittery/wavy only while tasks were being performed. I put about an hour or two of use on this machine to test it all out, everything else was fine ...including clear sound. The display was stable when I wasn't doing anything, as soon as I would copy a file, load an app' or perform any task I'd see a bit of display jitter/wavyness.
So, after some reading online it sounded like it could be my power supply giving me trouble. I was going to open up the power supply unit and check all the components and replace as necessary when instead I found a "tested to work" SE power unit matching the same model number as mine shipped for $15, this seemed like a better deal than the headache of identifying and replacing components. So, this morning I opened up my machine and swapped power supply units. I turned on the machine and everything seemed the same, clear sound but the jittery/wavy display (only during tasks) still persisted. However, within a few minutes after having the machine on the screen developed about 5 or 6 horizontal lines along the top of the screen and the screen went very bright. I turned down the brightness via the brightness control knob on the front of the machine and that worked for a second, but then the screen got really bright again, to the point I could barely see anything on the display. I could not see the menu on my desktop so I did a hard shut down via the power switch. I opened the machine checked everything visually, just a quick inspection ...verified that my power supply ground wire was connected, etc... put machine back together and turned on, everything works I get a chime, HD is spinning, fan is on, but no display at all (black no display).
That is where I am at now (had to go to work).
----------
Please help!
Here is a thought:
1) I had a loose connection from my CRT to the analog board which became worse when I openeded the machine and swapped power supplies. The connection became completely severed rendering no display. (yet would this account for the bright screen prior to it going dead)?
thanks in adavance-
The computer worked fine but had one annoying issue, that is the display would appear slightly jittery/wavy only while tasks were being performed. I put about an hour or two of use on this machine to test it all out, everything else was fine ...including clear sound. The display was stable when I wasn't doing anything, as soon as I would copy a file, load an app' or perform any task I'd see a bit of display jitter/wavyness.
So, after some reading online it sounded like it could be my power supply giving me trouble. I was going to open up the power supply unit and check all the components and replace as necessary when instead I found a "tested to work" SE power unit matching the same model number as mine shipped for $15, this seemed like a better deal than the headache of identifying and replacing components. So, this morning I opened up my machine and swapped power supply units. I turned on the machine and everything seemed the same, clear sound but the jittery/wavy display (only during tasks) still persisted. However, within a few minutes after having the machine on the screen developed about 5 or 6 horizontal lines along the top of the screen and the screen went very bright. I turned down the brightness via the brightness control knob on the front of the machine and that worked for a second, but then the screen got really bright again, to the point I could barely see anything on the display. I could not see the menu on my desktop so I did a hard shut down via the power switch. I opened the machine checked everything visually, just a quick inspection ...verified that my power supply ground wire was connected, etc... put machine back together and turned on, everything works I get a chime, HD is spinning, fan is on, but no display at all (black no display).
That is where I am at now (had to go to work).
----------
Please help!
Here is a thought:
1) I had a loose connection from my CRT to the analog board which became worse when I openeded the machine and swapped power supplies. The connection became completely severed rendering no display. (yet would this account for the bright screen prior to it going dead)?
thanks in adavance-
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