Here is an image of what I get in the display if I crank the brightness pot on the analog board..
I don't think I've ever seen a CRT acting like this so I don't know how to interpret this image.
These are not standard single retrace lines.
The voltages on the analog side of the analog board PSU...
Hi all,
I recapped a color classic analog board and after replacing a faulty TL431 it came back to life with a fair bit of pincushion distortion and a very bright screen.
I got no brightness control from the front buttons or the OS so I turned G2 voltage down (pot on the analog board) in order...
Hi all,
I got a macman midiman MIDI interface but it came without a serial cable.
Does anyone knows if it requires a null-modem (local talk) cable or a straight wired serial cable?
Thanks:)
Yes..I would expect this board needs a bit more work in order to boot again.
It was looking like it was found in the sea when I first got it.
Now while it looks better I'm not so sure I've checked *everything*.
I will post back when I have updates!
Thanks for the help:)
Okay thanks for clarifying,I left the power button screwed at the "on" position and wired a switch between the PWR_ON (green wire) and GND of the ATX supply.
Powering it on this way returns the same exact result.
So I was powering it up the wrong way but there must something else preventing it...
The IIsi power button is not pressed...I just leave it in the default position all this time since I think I'm force feeding the ATX voltages anyway.
Does it need to be pressed?
Unfortunately not. I waited more than a minute but no boot.
My guess is that there's maybe a trace or a via not making contact. The battery leak was pretty heavy on the board and I only found 2 traces not making contact.
It makes sense to have missed something so I should recheck everything more...
Forgot to mention that the 50.something XTAL is missing from the board.
I believe that could be important in a video mode that requires it, don't know if its absence can prevent the machine from booting up.
Thanks for the quick reply!
I installed the rest of the capacitors but still no chime.
I've wired the power supply as follows (looking at the connector as if the mainboard is directly in front)
GND + || + +5V standby from ATX (purple)
+5V + || + NC
+5V + || + -12v
+5V + || +...
I was a given a IIsi in a pretty bad state, the battery has leaked damaging the CPU IC (corroded leads which instanly broke upon touch) and several corroded traces throughout the board.
I've cleaned the board the best I could and repaired a couple of traces they were apparently damaged.
I also...
Is there any way get rid of this message which manifests in every boot?
Alright I may have shutdown improperly once, you got me but I see this in EVERY boot.
Do I have to go over logs or something to see what may have been corrupted or else.
Or there is an easy way to get rid of this message?
I ended up insulating the bottom with some thick tape and stick it just where I could connect the cable.
Seems sturdy enough for the time being.
I've ordered a 3.5" to 2.5" IDE adapter so I will also test the IDE to SD thing I've got here when the adapter arrives.
It's going to take a while to...
Yes I'll recap the power supply and the logic board as soon as I sort everything.
Still need to find some way to extend the IDE hard disk cable because the IDE to CF module can't fit in there; the cable is just long enough to clip to a hard drive physically installed the way apple saw fit.
I've actually managed to boot from the CF card by initialising it on the 630 and then transfering a floppy system folder from a OS9.2 machine to the CF.
I couldn't copy the system folder off a floppy in the actual machine.Go figure.
So now the computer boots off the CF!
I need to find a IDE 3.5"...
The computer arrived and it boots from floppy!So no repairs necessary. (I removed the battery so logic board is safe)
The system reports 20MB of RAM which is not great but still usable in order to install some stuff.
It also has a network card with a BNC connector sticking out which I guess is...
Interesting, I think the back of a SCSI CD-ROM drive I've already got has the same connector arrangement.
Will need to find it though.
The 630 is still on the road but should arrive soon.
I don't know what might be wrong with it cause it was advertised as untested.
I definitely have an IDE to...