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Thanks for the clear explanation. I would like to have the time for deep diving into the complete documentation of Pico and BlueSCSI board, but indeed I don’t have any. I did the same check measuring 3V3 (OUT) pin. What happens is that it quickly goes to 3.3V on start up. When I put the Mac on...

Yes, I did measure GP19 and GP27 (video): aren’t those the two pins which should be kept up by the resistors?

I just did a quick check: first, I monitored the voltage at the GP19 pin. The voltage raises very quickly to 3.3V as soon as the Mac is trying to access the disk during boot sequence. It stays at 3.3V sharp all the time. When I put the Mac on sleep, it drops to 0V almost instantaneously. On wake...

Yes, correct. Data cable, tested working on other devices. Yes, out of the two I had (the plain Pico and the Pico W I successfully replaced like as soon as the Wi-Fi option became available), the plain one has the voltage regulator busted, the W one seems to output the correct voltage, but...

Good to know that. However, fact is that I could not program (not even mount) the Pico before desoldering it, cleaning the board, soldering it back, cleaning everything back again. By chance or not, it is now not missing a beat when I try to mount it on my Mac. Could have been something else...

So, I switch to this thread for sharing the latest updates about the issues I was having with the BlueSCSI v2 v2022.12a Wi Fi on my M5120 Portable. Brief recap: after attempting the pull up resistors mods for preventing the system from crashing upon wake up from sleep, my BlueSCSI unit just...

I also don’t think it’s an ESD issue. As for the 5-12V accidental swap, I also don’t think I did it, but - objectively - I noticed that it is *possible* to fit the power connector upside down, as there’s no connector casing, so to speak, just the four prongs, which of course are not offering any...

So, today the Pico W arrived. After updating the firmware I slotted it in the BS board. Now, when I try to boot the Portable off the BS board, the Pico flashes 5 times indicating that there‘s no (valid?) SD card. The images on the card are the same as before this little nightmare begun and they...

So, first of all, my sincere gratitude and appreciation to @JDW for his support, we’re on the same time zone, we’re both enjoying some days off (golden week), so our exchanges can be quick. And of course thanks to @Androda for giving his feedback and sharing his expertise on this unfortunate...

So, I concluded both Picos are dead. Maybe the temperature for the desoldering tip was too high (I use 350 for most of the jobs, idea is to have a quick hot spot rather than persisting too long and heat up the entire nearby area), or maybe I inadvertently shorted with my own fingers some pins...

It reminds me of when my beloved Ti book 667 DVI who had driven me through my final years at university and beyond became obsolete. As I replaced it with a MacBook, I decided to donate it for free to a no profit youth organization, who could have still used it for basic administrative stuff (in...

Of course I would be very curious to know what caused the issue. Above all, I would like to know whether sourcing a new Pico W would suffice or if chances are that the board is also fried. As for the root causes, I can only make speculations: - ESD: a possibility, unlikely, but it is a...

It’s a very nice lot, it may easily fetch serious money (above 1k USD, for sure). My suggestion? Don’t trust your brain, trust your heart: keep it, it’s part of your life. Else, eBay. If you look out for cash and have some time to spare, selling each item separately may even grant you higher...

Thanks for your support @JDW, I appreciate it. Today I squandered another hour and half for desoldering the PicoW, not the easiest of the jobs, as the fit is very tight and removing all the solder is very tricky. Now I am twice as lost as I was before, though. The Pico W seems to be dead...

I’d love to help, but indeed I don’t have any spare time for it. I will follow your posts with special attention, though, keep on working on it, “The reward is in the journey“!

In fact, I did the same as you did, I swapped the Pico with a Pico W, it just worked fine. After making the mod for the sleep freeze and before testing the unit I upgraded the firmware to the latest one. Today I even tried to downgrade it again. Fundamentally, I now have the same hardware, the...

No, it would. With SCSI2SD unit I have 4 devices ID=0,1,2,3 on the internal SCSI connector, plus a real MO drive (ID=5) on the external connector. Everything works. If I attempt the same with the BlueSCSI, neither the internal devices nor the external one are recognised. If I unplug the...

Back at the time, I used to do a lot of programming in Think Pascal for solving scientific and engineering problems. Loved every bit of it.

So, today I tried to figure out why the modified BlueSCSI board is no longer working. At first, I suspected the hand-made SCSI cable was the culprit, as the modification to the board was looking neat. In fact, I could identify one line that was maybe a little loose at the connector. But...

Good to know you you have evidence the mods work fine. I will check it thoroughly again, including the scsi cable, maybe some contact in the connector got loose with all the push and pull…