I was not intending to have this as as my first one here but because of the extensive number of ESP-07 modules released from factory with this problem I really hope will help people to solve the DOA issue without sending back the modules and receive brand new ones with the same problem.

So, basically, If you receive a brand new ESP-07 Module as in the picture above and when power up anything you get is a solid blue led light (power led on this type is blue) then maybe below is your solution:

1. Carefully remove the metal cover from the unit with a hot airgun.
2. Take a look at the oscilator near the ESP chip. If in NOT positioned as in the picture below then it need to be removed and resoldered AS in the picture. Mine were rotated at 90 degrees but might vary.

The problem was also posted and discussed here: http://www.esp8266.com/viewtopic.php?f=6&t=811&sid=da7df1aaf04aed5fa36a9dc41b22aa66&start=50

May your hot air station be with you !! 🙂


Leave a Reply

Your email address will not be published. Required fields are marked *

Related Posts

Display

Mailbag – Nextion Enhanced NX8048K070_011C – teardown

For any of you looking for affordable HMI Displays, it is Special Summer sale on Bangood until 20 Aug 2017!! https://www.banggood.com/search/nextion.html?p=A524021677049201505T ———————————————————————————————————————————————————————- Part 2 of the Nextion HMI  Enhanced NX8048K070_011C Display Series, teardown time! And a Read more…

Display

Mailbag – Nextion HMI Display – Enhanced NX8048K070_011C

And the story behind: Today we will start a new hands-on tutorial series generally related with Display options available for the esp8266 projects and in particular with the smarter type of Displays, the HMI (Human Read more…

News

Latest News

<Under heavy construction> Hello Everybody, As you have probably already noticed, we are in the middle of migration of the esp8266-projects blog to a new an shiny home:) Please be patient until we will finish Read more…