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Hi I’ve recapped my M5120 and it has sad Mac now. It works previously before capping. I’ve check both battery and power adapter that’s working great so power shouldn’t be the issue. It chimes but has the error as shown. Also swapped out the ram but it’s the same. 
 

Any help?

EA394A70-CA7C-42D3-81B3-EB3C696B7911.jpeg

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13 hours ago, desertrout said:

Is it the same error every reboot/reset? This link (https://udcf.gla.ac.uk/~gwm1h/Error_Codes/Sad_Mac_Codes.html) provides a breakdown 68k error codes, with some specifically for the Portable further down the page. If I'm reading it right, the error you show indicates a RAM test failure at Bank A.

Yes it is consistent every boot/reset.

 

its working all the way until it don’t one day. And I recapped and found this error. I don’t see any broken traces, how should I change the ram then? It’s soldered.

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Don't jump ahead just yet. There are a few things you could try first. If you have a RAM expansion card, verify it's in the correct connector (J11) - happens to everyone. You could try starting both with and then without the expansion card. After that, I'd examine the onboard RAM near where you were recapping to see if there is any residue or damage. I don't know offhand what banks are where, but start with a visual inspection.

 

Also make sure to do a power manager reset if haven't been.

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  • 4 months later...
On 7/4/2020 at 3:57 PM, desertrout said:

Don't jump ahead just yet. There are a few things you could try first. If you have a RAM expansion card, verify it's in the correct connector (J11) - happens to everyone. You could try starting both with and then without the expansion card. After that, I'd examine the onboard RAM near where you were recapping to see if there is any residue or damage. I don't know offhand what banks are where, but start with a visual inspection.

 

Also make sure to do a power manager reset if haven't been.


Yes ram is at the correct slot. Done a power reset and it’s still the same. 

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Interesting - seems wildly un statistical that three suffered RAM Sad Macs after a recapping....did you do any board soak/clean as well ?

 

In the absence of any other obvious path I'm going to pull the onboard RAM, test each chip and see if there are any duds. Nobody seems to be able to point to Bank B which I think the code references - they seem to be divided into an upper and lower (4x4 block) so I don't know if that makes the block nearest the hybrid chip bank B. But given there were replacement caps up near the I/O ports, that might well be bank B....

 

Like I said elsewhere, I'm only doing this because I failed my crochet practical....

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5 minutes ago, at0z said:

Interesting - seems wildly un statistical that three suffered RAM Sad Macs after a recapping....did you do any board soak/clean as well ?

 

In the absence of any other obvious path I'm going to pull the onboard RAM, test each chip and see if there are any duds. Nobody seems to be able to point to Bank B which I think the code references - they seem to be divided into an upper and lower (4x4 block) so I don't know if that makes the block nearest the hybrid chip bank B. But given there were replacement caps up near the I/O ports, that might well be bank B....

 

Like I said elsewhere, I'm only doing this because I failed my crochet practical....


I just soaked my number 1 board and cleaned again last night. Will try tonight, this board was working before recapping until few caps leaked and unable to power up. So I recapped it and got the ram error.

 

The other 2 is untested, been in storage for years.

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