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Picked up a load of Model A1002 eMacs from the local junkyard. A couple of them are in very nice condition, but they do not boot at all. I opened them up, took a few boards out, and can't find any popped capacitors. Has anybody brought these back to life before? It would be interesting to know what common issues there are that prevent these from turning on.

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Don't eMacs have the same logic board as a Beige G3?   In that case there are a number of easy things to check first.    There needs to be installed:

 

1) CPU ZIF module

2) ROM DIMM

3) At least one RAM DIMM (PC66 - PC133 SDRAM)

4) Jumper block (configures bus speeds)

5) Voltage Regulator Module

 

If any of those components are missing or miss installed, then the machine will not boot.

 

Also, there is a jumper on the logic board that must be set to correspond with the type of power supply used -- either Apple PS or standard ATX PS.   I don't know why anyone would change that jumper, but someone might have removed it if they were stripping the machine.

 

Often RAM and ROM modules get stripped before a machine goes to a scrap yard.

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Thanks for the reply. All components are installed. I should have specified, these are not stripped down. Kind of wondering which components may have failed which are causing them not to start.

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14 minutes ago, trag said:

Don't eMacs have the same logic board as a Beige G3?  

I think you're referring to the all-in-one G3, which does share the same logic board.  The eMac is totally different, they are closer to an iMac than anything else.

 

Do they power on at all or are they just totally dead?

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I had that issue with my 1.42ghz eMac. I had not turned it on for three months, and when I needed to use it, no joy. After removing the plate covering the memory, and inspecting the caps that are visible there for damage, I turned to replacing the battery. My machine booted right up.The battery may have too low of a charge to allow your eMacs to run. That would be my guess.

Edited by ppcoutlaw
left out a line.

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On 3/12/2019 at 1:12 PM, Brett B. said:

I think you're referring to the all-in-one G3, which does share the same logic board.  The eMac is totally different, they are closer to an iMac than anything else.

 

You're correct.    Thank you.   I knew I wasn't quite certain...

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Just a quick question. Do the machines have ram? Depending on the model, you can run up to 2gb in it, unofficially. No memory installed may give you the dead machine treatment. I have not tried to start mine without ram, so I dont know what exactly would happen.

 

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9 minutes ago, ppcoutlaw said:

Just a quick question. Do the machines have ram? Depending on the model, you can run up to 2gb in it, unofficially. No memory installed may give you the dead machine treatment. I have not tried to start mine without ram, so I dont know what exactly would happen.

 

When PowerPC was outlawed, only outlaws had PowerPC. I am a PowerPC outlaw.

Edited by ppcoutlaw
oops, how do i kill a double post?

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