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PowerMac G3 Server - Need help Identifying 2 components on the Logic Board 820-0991-B

JohnnyPhantom

Active member
Hey Everyone,
I was given a PowerMac G3 Server, and it was working, then it just stopped. This is totally my fault and I've been kicking myself. When I was given it, I was told the battery was removed, so I took it, put it on my desk and it powered up just fine, about a hour later it no longer powered on. Weird, I opened it up and saw not only a battery was inside with its brown ooze crusted all over, but the insides were now wet with a clear liquid. I took the board out and cleaned it very well and soaked it in rubbing alcohol. I let it dry for days, and now it powers up again. However, it no longer has a startup tone or video. I just get the power LED and the fans spinning. I'm working with Luke over at Console5 to make a cap kit for this machine (incase the caps are the issue) but underneath the battery are 2 components, what looks like a resistor and a capacitor and I have no idea of their values. C241 and R151. Would anyone happen to know what I can replace these with? The board is numbered 820-0991-B

Thanks Everyone!
 

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Phipli

Well-known member
Hey Everyone,
I was given a PowerMac G3 Server, and it was working, then it just stopped. This is totally my fault and I've been kicking myself. When I was given it, I was told the battery was removed, so I took it, put it on my desk and it powered up just fine, about a hour later it no longer powered on. Weird, I opened it up and saw not only a battery was inside with its brown ooze crusted all over, but the insides were now wet with a clear liquid. I took the board out and cleaned it very well and soaked it in rubbing alcohol. I let it dry for days, and now it powers up again. However, it no longer has a startup tone or video. I just get the power LED and the fans spinning. I'm working with Luke over at Console5 to make a cap kit for this machine (incase the caps are the issue) but underneath the battery are 2 components, what looks like a resistor and a capacitor and I have no idea of their values. C241 and R151. Would anyone happen to know what I can replace these with? The board is numbered 820-0991-B

Thanks Everyone!
First thing I would do is void that warranty. Remove the jumper block and clean the contacts in there.

The cap and resistor are probably okish. A better photo would tell us what the resistor is, the value is written on it but your photo is fuzzy.
 

JohnnyPhantom

Active member
First thing I would do is void that warranty. Remove the jumper block and clean the contacts in there.

The cap and resistor are probably okish. A better photo would tell us what the resistor is, the value is written on it but your photo is fuzzy.
Thanks for the reply! This is about as close of a photo as I could get, looks like a 101 on the resistor not sure on the cap if there's anything at all.
But if I remove my warranty sticker, will apple still repair the machine? I'm sure there must be some AppleCare left on it :p
 

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Phipli

Well-known member
Thanks for the reply! This is about as close of a photo as I could get, looks like a 101 on the resistor not sure on the cap if there's anything at all.
But if I remove my warranty sticker, will apple still repair the machine? I'm sure there must be some AppleCare left on it :p
Looks like 101 as you say that means it is a 100ohm Resistor. The numbers work as all but the last number are significant figures, and the last is the number of trailing zeros. So for yours, it is 10 and 1 zero, i.e. 100.

Caps are rarely labelled.
 
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