---
title: "WIZFI201 Hardware EXT_RESET problem"
url: "https://maker.wiznet.io/forum/14272"
markdown_url: "https://maker.wiznet.io/forum/14272/md"
type: "Forum topic"
category: "Wireless"
author: "s.fischer"
created: "2021-06-22T08:04:46+09:00"
last_activity: "2021-06-22T08:04:46+09:00"
language: "en"
views: 414
replies: 0
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# WIZFI201 Hardware EXT_RESET problem

## Question

Asked by s.fischer on 2021-06-22 in Wireless.

Hi,
we had to buy some WIZFI210 modules from broker for replacement and have the problem that the EXT_RESET signal is always high and can not be pushed low (only with more than 20mA current). We found that the pcb has a different SOT-23 component connected to this signal. The good pcb´s has a marked SQCF or SQCC component, the bad one have a marked 8ADV component soldered. Exchanging the parts or removing the 8ADV, the EXT_RESET signal works → 8ADV type is not ok.
I think it could be a FET but don´t found a hint in the internet.
Have someone an idea?

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Source: https://maker.wiznet.io/forum/14272