Search results

The battery was not the culprit. I tried with 3 new batteries and it didn’t work. Pressing on the BGA with a few kilograms of force helped, but only for a few seconds.

I was not able to fix it with a heat gun and flux.

It wasn't the caps. Most likely it is one of the big BGAs on the logic boards that is failing.

Quick update: I was reading the wrong manual. I found the correct one, for the Summer 2001 editions of the iMac G3. In the correct manual, it instructs you to check voltage at C4 instead of C10. The voltages are -1.2V when plugged in but powered off, and +25V when powered on (expected +21V). It...

I just now verified again that the indigo logic board will boot fine within the graphite case, with either DCO, with images showing up on the CRT.

But does it make sense that that one would be broken if it works with another logic board?

I set my multimeter to "beep" and placed the black terminal in a screw hole, and the red terminal on each side of all the capacitors one at a time. All capacitors either made the multimeter go beep or at least show numbers on the display, *except* the slightly bulging 470uF capacitor which gave...

The bulge is barely visible.

Oh my god I found a bulging cap!! Is this the one you meant? Is that a 560 cap? The same cap on the indigo imac is completely flat so this could be the one!?

I took out my multimeter for the first time in my life and started testing according to the instructions in the service manual. J9 shows +5V as expected C10 shows 0 volts with power cable plugged in (expected is -1.2V) C10 shows 0 volts when power button is pressed (expected is 21V) (EDIT...

Lilliputian: have you had the same symptoms? No chime, but green led on logic board?

Thank you for your reply! I am away for a few days so I won’t be able to check now, but is the 560 microfarad cap on the logic board or on the downconverter? Because I’ve already verified that both downconverters work if the indigo’s logic board is connected to them. Only the graphite’s logic...

Hi! I have an iMac G3 700MHz (Graphite, 2001) that will not boot or even chime. It just "crackles", and I see a green LED turn on on the mainboard near the RAM slots, that goes out if I hold down the power button or pull out the power cable. I bought a separate, similar iMac G3 blue 400MHz...