I’ve changed chip F18 and I now have solid horizontal white bars. Another thing is that I seem to loose composite signal every 2 seconds, maybe a clock issue ?
Hi guys,
Just received the chips, tried piggybacking but that doesn’t seem to change anything. :/
Maybe there are specific chips I shall try this method on ?
If you have any idea, please let me know :'(
Thanks
Edit : Piggybacking F18 makes horizontal white bars but that's it
Arths
Mine uses TMS4164, must be an early revision of the IIc.
According to this site, they should be compatible anyway.
Ordered five chips from AliExpress, they should arrive in 2 to 3 weeks.
Thanks for your advice :)
Hey guys,
Turns out it was the LM311N chip which was causing the blinking power light.
Soldered a new one and blinking is gone but it still doesn't want to boot.
Hooked the IIc using the composite output and here is what I get..
Sometimes I get scrolling characters instead like so...
Thanks for your reply,
I will try that as soon as I get home :)
Already measured the 7905 chip and I’m getting voltage in expected ranges, is it a good sign ?
Sorry for the late response :(
Yes I’ve tested without a disk drive and it still won’t boot.
What should I check first ?
Is there a place on the board where I can check that the voltages are the ones I shall receive ?
Thanks for your patience
Just tested the ADB ports while the computer is turned on, I get +5V for both.
The Dead Mac Scrolls indicates that it might be the Tokin filter, tested it as well, pins (1-8, 2-7..) show 0V which should be correct ?
I really don't understand why is the ADB not working. Plugging a keyboard...
Hey guys,
Quite a time wrap from 2012 isn’t it ? :-p
I got my Macintosh SE FDHD back from storage.
I really think that the screen glitches and Sad Macs I have from time to time might be caused by the Power Supply.
As of now, I am getting the right voltages from the floppy disk port (+5V...
@bibilit I've seen on another thread that you've been able to boot your iBook from a USB key to reinstall OS X.
Been trying that with Panther and Tiger but mine can't detect the USB key either in the startup manager or Open Firmware.
Can you PM me about what you did to succeed ? :)
Thanks
Thanks for the advice,
Well I’m currently trying to repair the yoyo plug. I’ve cut the cord where it seemed a little bit burnt and guess what, the adapter doesn’t make a clicking sound anymore so I guess there was a short circuit.
After inspection some of the wires inside the plastic cable...
I will check this out as soon as I get home, thanks :)
I can see that you own a white iBook G3, does your yoyo adapter make a click noise when plugged to the wall outlet?