DRO digital readout -linear scale- repair for $0,1

Hy There,
In this video i will try to fix my broken linear scale,
i'm pratty sure that it was my fail because i got problem with mill motor wich was in short, so DC current may leak to the ground and demage the scale.
i tell banggood what's happened and they send me new one, free of charge from EU warehouse, so i got new one in only few days.
Later i try to fix old one to replace only suspicious element on the board that's LM339N. I buy 10 of them for $1 and after replace the scale works like new.

You can buy these items here:
(this is my affiliate links, if you buy from that links you get cheaper, and I get a piece of cake)

DRO:
https://www.banggood.com/custlink/GDDvelDz9C
Extra 15% OFF Coupon Lathe Tool code: BGAA357 discount: 15%off
coupon code: BGAA357 discount :15%off expire date: 29.02
other hot deals:
https://www.banggood.com/custlink/Dv3E5GK0sN
http://gbe.st/3028wrA
DRO review video:
https://www.youtube.com/watch?v=TIeuhHDJXwI
English language was always pain in the a** for me, I respect every correction, but please be gentle
Thanks for watching.

if you want to support me for more projects like this, my paypal is:
https://www.paypal.me/TinC33
Hope you enjoy in video and welcome to watch my other channel:

Tine Sedej:
https://www.youtube.com/channel/UCNwj7T3yDfUbmARRHERF8QA

Foto, video & editing: Tine Sedej

Camera:
Sony A6500 [sel 18-200 f3,5-5,6 Zeiss touit 50 2.8 macro]
Sony A6000 [sel 30 f3.5macro Sigma 30 1.4]
GoPro 7 Black

Music is from: YouTube audiolibrarry
1:Forget Me Not - Patrick Patrikios

2:Cover - Patrick Patrikios

Видео DRO digital readout -linear scale- repair for $0,1 канала TinC33