It should not.
The parameter found are saved, so the next time it reboot, it will use that.
The parameter found are saved, so the next time it reboot, it will use that.
So I went ahead and turned it back on to let it cycle, and it eventually timed out and turned off. What do you think the next step would be? Would it really be the ribbon cable? This is the second one I've used. The first cable booted up the first time, and then I disconnected one cable so I could put the heat sink back on, and it's been blue light ever since. I initially did the mosfets first, and it didn't want to work then, either. It was giving the unstable code, which I've been able to fix by doing the SDA SCL cables. That method also worked once, but only once. I'm not really sure where to go from here. This is the first time I have used the cables and done a switch lite. I haven't had this problem with any of the V2s I've done. Are they known to be more difficult? It doesn't make me feel too confident about doing my OLED.
Need confirmation, i confused.
1. you have use two different flex?
2. The first flex worked, but the others don't?
3. What cable you disconnected when closing the heat sink?
4. You still connect the SDA and SCL line until now?
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It might silly question. I see your customer could open the device and video it. Did he ever try to take the battery connector off, then connect it again?
Anyone seen charging break after pico install?
Glitches FAST and boots up fine.
USB Transfer connection works fine, too.
It's a brand new switch, but I didn't test charging before the install, so checking here to rule out possible pico issue, or any recommend troubleshooting steps, before replacing the port or something.
Thanks
Glitches FAST and boots up fine.
USB Transfer connection works fine, too.
It's a brand new switch, but I didn't test charging before the install, so checking here to rule out possible pico issue, or any recommend troubleshooting steps, before replacing the port or something.
Thanks
So when I took out the mosfets that weren't working I installed the first cable. The first time I turned it on it went to the correct "SD card" screen. I removed just the CPU cable so I could install the heat sink. The switch was 100% unplugged. I do not have the SDA SCL lines connected anymore. They were only connected when I was using the mosfets. Do you think that I should connect them even though I'm not getting that error code?
Ah i see. Could it be the G line solder short circuit with the GND from shield? Have you tried to isolate it with kapton tape?
I have zoom the video but still not so sure on the Dat0 cable on the point, it seems touching the shield.
I tried with my lite that just show no sd card screen and get black screen only with that "update".
I was getting black screen on "every" payload before, just ums-loader works.
Have you try give kapton tape on the cpu cap solder. If you put solder too much it could short circuit with the GND shield, when you close the heat sink.
I mean it is touching yeah, but it is soldered at 4 points pushing against thre soldering ball... where the hell can it go, move or... fly?So making sure u have a proper solder connection is a waste of time and money ?
why dont u just pretin the wires and glue then with UV Resin on the solder points
one day the issue will come there is no real connection.
people pay for the install so no waste of time and money , reballing a emmc takes 5 min installing a perm dat0 adapter 2 min reflowing takes to min , cleaning takes 1-2 min so all togehter max 10 min every installer can spare if they charge 100+ for installing a chip
like i said these are just my 2 cents everybody do like they do, but pressing in a adapter and solder it to the top anchors is not a proper connection for me .
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atleast some people have common sense here.
u cannot compare a flex cable that is properly soldered to the connections it needs with a Dat0 adapter that is pressed against a solder point.
Specially when u are an Aircraft electronics , if u would tell anyone u use a dat0 flex adapter what is pushed it so make a connection and soldered on the side on an aircraft you would loose ur job.
Yes i know a Switch is no aircraft and there is no real compairson (prob spelled wrong)
but as a 20+ aircraft tachnican u would not use a Dat0 Adapter if u take ANY Pride of ur work.
i have 16 years of soldering and repairing expierience and i would never offer such a half ass job even if it works
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yeah ive also heard that befor but since the issue was befor pico install there is a issue with his sdcard slot
but when arent u high on somethingand ur answer are specially then always right Xd
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take a needle and see if u can move some of those pins , also these solder joints do not look very good.
if i would have that issue like u i would atleast resolder those pins cause the connection look kinda crappy to me.
I have not, but I definitely will give that a try. Do you think I should re-solder the SDA and SCL? Also, What about the large tab that goes under the shielding? Does that need to be soldered or Kapton taped?
No, the SDA and SCL is the last option, when the glitch didn't work at all.
In your case the glitch are work, but cannot found the precised parameter.
Using SDA and SCL seems unstable. The time it glitch kind of random.
The concern about the tab is the friction with the shield, i usually put kapton tape on it, just for prevention, if someship happened.
ok so lets say that i tape everything up and nothing changes. where do we do from there?
I've no idea.
The only possible scenario for that condition happened is problematic dat0 or mosfet.
would you suggest changing out the cable for the second time or do you think it would be a board level problem?
Changing cable might work, but checking continuity is enough. As long its connected and not short circuiting anything than its okay.
Changing the rp2040 i dont think will be usefull. Since all the step are working, until the last step.
The only thing might affect, is turn off the rp2040 by plug off the battery connector then plug it on.
Since you using mosfet from the flex cable, then the diameter is not an issue, since the flex surface for D,S is so huge that it could afford the high current flows there. The only problem known is short circuit on cap solder, and short circuit with the shield. This could be detected by simply remove the shield. The glitch should work as usual.
Ok when I get home I will do some more work on it. I will keep you posted. Thank you for your help.
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wait a second... ive already made sure nothing was shorted to ground. including the CPU connection (#15) on the rp2040 zero. Wouldn't that show a short if the cap was touching the shield? can it be shorted and not shorted to ground?
Last edited by BlueBeans,
It wasn't touching the Dat1x, as close as it looks, but even so, I redid the solder point. I am sending another image to verify. I'm going to put here the multimeter values for each point.
1 Dat1: 524 ohms
2 Dat0: 524 ohms
3 Groud
4 Clk: 917 ohms
5 Vdd :780 ohms
6 CMD: 524 ohms
7 Dat3: 524 ohms
8 Dat2: 526 ohms
Just now, it worked, then it gave this error screen on the micro sd.
I also saw the amount of SDMMC1 errors.
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Last edited by Guigazeus,
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