JUNTEK VAT series voltage ammeter battery coulomb meter operation function demonstration video

VAT1030
www.aliexpress.com/item/32867...
VAT1050
www.aliexpress.com/item/32868...
VAT1100
www.aliexpress.com/item/32867...
VAT1200
www.aliexpress.com/item/32866...
VAT1300
www.aliexpress.com/item/32867...
VAT4300
www.aliexpress.com/item/32866...

[@Marcelo98_Nas]

Juntak PSG9080 display defect Good morning, I bought the same used one with corrupted firmware, I followed the steps available here on the website and solved the problem, but I noticed that it is showing some lines on the display, I would like to know if it is related to the firmware or hardware update, as I'm an electronics technician, if it's the display, I would like you to give me the reference so I can make the purchase and exchange it. Or I can even send a photo of the situation for possible analysis! Thanks in advance for your attention.