glay78
Well-known member
I will try that. Thank you so much!Ok, then you can rule out replaced caps. Just need to find the break in the circuit path somewhere in the data bus to the RAM. (Assuming its not a bad transceiver or something)
I will try that. Thank you so much!Ok, then you can rule out replaced caps. Just need to find the break in the circuit path somewhere in the data bus to the RAM. (Assuming its not a bad transceiver or something)
The likelihood of this scenario being correct in the normal sense is remote. But anything is possible.
If this were to be true, it would likely be due to vias that have already been damaged by the capacitor leakage to begin with, in which case, would have already been a ticking time bomb. I have soaked/washed so many different boards using a couple different methods, and even do it during manufacturing of boards, and never had an issue "except" in areas that were already damaged by leaking caps.
Oh man, there are like many of them and I can’t remember how many. I wonder if I can find them tooIf it helps, I think techknight says he usually just replaces all the ram in one shot because it's time consuming to find the bad one.
Omg that’s a lot to change, not the price but the time and patience, you are right. So there aren’t really ways to rest the rams using multimeter?Yep there are a lot... 32. You're looking for 256k CMOS 100ns SRAM... might take some digging to find a direct replacement (check UTSource maybe, '62256' is a good search term). Looks like there's lots of 70ns out there though, which should probably be ok (imo - I'd personally try it)... there's even more 45ns out there (and the cheaper option), but might be too fast? Best case, you're looking at at least $60 or $70 to do a wholesale swap... I guess it depends on what your time and patience is worth.
Ahh good way to try too. Doesn’t hurt to buzz around connectivity, rather than changing them blind.Maybe you should first buzz out the ram. I was able to identify broken traces located under one of the ram chips with a multimeter. Could be fixed
with three wires. If I remember right more or less the pins from one chip should be connected to the same pins on the other chip. Maybe there was some slight difference when reaching row 5. Too long ago I did this.
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Wow thanks mate! This should keep me busy for the coming weekend. If all fails are u keen to buy? Shoot me a PM. It’s recapped but just the sad Mac M5120. I’ve got another M5126 which I’ve recapped and restored working well, I’ll just keep that will do.Here's an old thread that may help: https://68kmla.org/bb/index.php?threads/macintosh-portable-error-code.5257/
and TechKnight's RAM strategy: https://68kmla.org/bb/index.php?threads/error-code-0082-from-macintosh-portable-5120.3988/
Really only looking for a working one. So if you get it working and still want to sell, let me know.Wow thanks mate! This should keep me busy for the coming weekend. If all fails are u keen to buy? Shoot me a PM. It’s recapped but just the sad Mac M5120. I’ve got another M5126 which I’ve recapped and restored working well, I’ll just keep that will do.
Ok sureReally only looking for a working one. So if you get it working and still want to sell, let me know.