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Forum Index : Microcontroller and PC projects : Help - my RP2350B has stopped working!
| Author | Message | ||||
| Mikeinnc Newbie  Joined: 28/10/2026 Location: AustraliaPosts: 1 |
OK, I understand this might be a stretch! I have a RP2350B computer which was working perfectly, but has suddenly stopped! I built it from a Silicon Chip kit, and it hasn't ever missed a beat - until yesterday. I've been using Tera term and a USB cable to power it, and transfer information. Yesterday, when I plugged it in, and chose the USB serial option, it would not show the >. Ive tried following the information in the original Silicon Chip article - setting the the DVDD pot to 6K; setting switches to 'disable'; pressing the boot switch and uploading the 'çlear flash' UF2 file. Then Ive reset the DVDD pot to 18K etc. But all to no avail. However, if I press the 'reset' button on the rear, I do get some strange 'hieroglyphics' appear on the screen. On close inspection, I can't see any 'mechanical' issues - solder pads etc, and both red and green LEDs are on. If anyone has any suggestions on what to try or where to monitor - anything, really, Id be very grateful! As I said, it was working *exactly* as anticipated before plugging it in yesterday..... Suggestions? Many thanks to everyone!  |
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| PhenixRising Guru  Joined: 07/11/2023 Location: United KingdomPosts: 2110 |
I think a few of us have experienced something similar in the past. Mine wouldn't work in any USB port. I fiddled with deleting the USB ports and letting them re-establish themselves. Don't remember if that was the actual cure because I did lots of things but it eventually started working. |
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| mozzie Guru Joined: 15/06/2020 Location: AustraliaPosts: 475 |
G'day Mikeinnc, The mention of hieroglyphics makes me wonder if the baud rate in Tera-Term has become incorrectly set. I would check this first. Setup -> Serial Port -> 115200 8 n 1 What version of Windows are you running, has it done an update. So can you confirm: The RP2350 does show up as a drive and you can download the clear flash uf2 The drive reappears and you can download the PicoMiteHDMIUSB firmware is the heartbeat LED flashing? You can connect to the PicoMite in Tera-Term but not communicate. Regards, Lyle. Edited 2026-10-28 19:26 by mozzie |
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Wölfi Newbie Joined: 14/10/2026 Location: GermanyPosts: 29 |
On my (WeAct) RP2350B-Boards the "clear flash uf2" never worked, but the "Pico Universal Flash Nuke" always did. https://github.com/Gadgetoid/pico-universal-flash-nuke Latest Release: https://github.com/Gadgetoid/pico-universal-flash-nuke/releases/tag/v1.1.0 |
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