# Schematic or parts help?

**URL:** <https://forum.electromage.com/t/schematic-or-parts-help/3137>\
**Category:** Troubleshooting\
**Created:** [August 26, 2023, 8:19pm UTC](https://forum.electromage.com/t/schematic-or-parts-help/3137 "2023-08-26T20:19:44Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![wizbowes](https://forum.electromage.com/letter_avatar_proxy/v4/letter/w/ba8739/32.png) [@wizbowes](https://forum.electromage.com/u/wizbowes)\
**Post date:** [August 26, 2023, 8:19pm UTC](https://forum.electromage.com/t/schematic-or-parts-help/3137/1 "2023-08-26T20:19:45Z")

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I’ve just blown up a couple of Picos by not resetting my PSU to 5V and bung 12V through them. I caught it straight away and I’m hoping it’s just one part to replace (expensive mistake otherwise). The part (voltage regulator?) is the 5 pin chip with the VM1HC on it. Google isn’t brining anything back for the part. Anybody know what I should try to replace it with?

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**Author:** ![GeekMomProjects](https://forum.electromage.com/user_avatar/forum.electromage.com/geekmomprojects/32/749_2.png) [@GeekMomProjects](https://forum.electromage.com/u/GeekMomProjects)\
**Post date:** [August 27, 2023, 4:37am UTC](https://forum.electromage.com/t/schematic-or-parts-help/3137/2 "2023-08-27T04:37:15Z")

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I’m afraid I’m not able to offer any help on your question, but I think responses may be slower than usual right now because a lot of the people who answer questions here are at Burning Man.right now.

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**Author:** ![zeb](https://forum.electromage.com/user_avatar/forum.electromage.com/zeb/32/257_2.png) [@zeb](https://forum.electromage.com/u/zeb)\
**Post date:** [August 27, 2023, 8:55am UTC](https://forum.electromage.com/t/schematic-or-parts-help/3137/3 "2023-08-27T08:55:45Z")

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Could it be an AP2112K-3.3TRG1 3.3 volt regulator? I don’t have a Pico but the schematic is here:

> <https://github.com/simap/pixelblaze/blob/master/V3/hardware/PB32Pico_1.x.pdf>

Hope this helps.

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**Author:** ![wizbowes](https://forum.electromage.com/letter_avatar_proxy/v4/letter/w/ba8739/32.png) [@wizbowes](https://forum.electromage.com/u/wizbowes)\
**Post date:** [August 27, 2023, 1:00pm UTC](https://forum.electromage.com/t/schematic-or-parts-help/3137/4 "2023-08-27T13:00:23Z")

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Awesome thanks. Ordered some from China will see how well my old figures and eyes are with SMD replacements!

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**Author:** ![zeb](https://forum.electromage.com/user_avatar/forum.electromage.com/zeb/32/257_2.png) [@zeb](https://forum.electromage.com/u/zeb)\
**Post date:** [August 27, 2023, 9:23pm UTC](https://forum.electromage.com/t/schematic-or-parts-help/3137/5 "2023-08-27T21:23:22Z")

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You’re more than welcome. I hope you get on well with the SMD soldering and that this manages to resurrect your Picos!

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**Author:** ![system](https://forum.electromage.com/uploads/default/original/1X/98123d16088a5451b5a585e24c0f2a40dd76061e.png) [@system](https://forum.electromage.com/u/system)\
**Post date:** [December 25, 2023, 9:24pm UTC](https://forum.electromage.com/t/schematic-or-parts-help/3137/6 "2023-12-25T21:24:11Z")

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