Recent content by phunguss

Parts diagram here, see the last page. Bookyard usually caries lots of parts, but I don't see anything much for Quadra. Maybe try this place Retro Technology ? Without the exact part number, it's hard to find on eBay.

So is there a way to recreate the 10.0-10.3 manually to include in the archive?

Based on the long length of the originals (listed as 15-23"), they will fit any size of these displays. A set of five delivered is US$37 from eBay, you could probably find similar items on Amazon or AliExpress, depending on your global location. So US$7 for a set of LEDs and drivers, some misc...

Since the previous post, I ordered some longer LED strips that were more appropriate. The previous post used two "laptop" kits which have an inverter that only drives one strip of LEDs. The new inverters came with dual strips, so each tiny inverter drives both strips. These inverters are also...

I could not see a picture on one of my 17" displays with a bad inverter board. The power light stayed on, but the flashlight test did not work for me either. I replaced the backlight with an LED strip and it works great. There are two boards inside the display, one is a logic/graphics board...

Can you boot into 9.2.1?

So when you fully boot into safe mode, what is the resolution? Do you have any other boot drives or optical media to boot from? Sounds like a software conflict.

Could it be trying to go to a resolution that is not supported? What resolution is your CRT? Try connecting your CRT, fully boot, set the resolution as low as you can go and shutdown, remove CRT, add ADC monitor and boot back up. I don't have a 20" to test things.. but I do have 17", 22", and...

What about this one? And this thread says it is a straight through cable but ALL pins must be present for it to work.

Here is one version of an adapter pinout. I see that your KVM can output to Apple DB15 or VGA DB15, so it must have internal intricacies/adapter. I would agree with @joevt that the cables required are likely straight through from the 3 computers to the KVM.

Wow, I have never seen one fit backwards like that. Search your favorite shopping site for JAE 50 PATA adapter. No idea if these specific ones are compatible or not... it is a guessing (or buy and testing) game. I could not find one on Amazon or AliExpress. Let us know which one works for...

So this Apple thread says the boot ROM it toast. "Four beeps. Indicates there’s a bad checksum for the remainder of the Boot ROM. (Checksum refers to a method of determining whether data is corrupt.)" No idea if that is fixable... otherwise snag a cheap mobo on eBay (this is the only one I saw...

The video shows you are still getting the 4 beeps. Try disconnecting the hard drive and only leave the cdrom attached. When you power up, hold down Command-Option-R-P and see if you get other sounds (cycle through 3 boot chimes to fully reset everything).

Have you used the iFixIt guides for your disassembly or did you just wing it? I would disassemble and verify you have made all connections. The tray loader should have a 15pin video cable, and two other power connectors that drive the motherboard and the monitor (make sure they are is plugged...

There are many models of the iMac G3, so please include info from the data plate. What color? Is it tray load or slot load?