Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Problem identifying smd component/problem

Status
Not open for further replies.

steadyhands

New Member
Hello Folks,

new poster here, just a hobbyist, looking to refine my craft and love for electronicics repair.



below I have a metering device, made by Bluelabs - Dosetronic with attached leads it reads pH/TDS,water quality etc and displays on a sub-screen connected to ribbon cable.

when power turned on only 1 led turns on, tried replacing Led with no such luck, moved on to replace both 2 sip 5v to 5v 200mA convertors as I found output to unit close to my circle not output 5v. but I’m having issues identifying this chip it is labeled naog ? It gets real HoT like 50plus degrees, so I suspect that’s my next component to trace out.



there are no available diagrams, at least available to public for this device.


thanks for any input.
 

Attachments

  • 0848D124-B1DB-4D14-89E5-D3797C897200.jpeg
    0848D124-B1DB-4D14-89E5-D3797C897200.jpeg
    1.3 MB · Views: 150
  • 241DF58A-D9F5-416A-9B6C-259059685792.jpeg
    241DF58A-D9F5-416A-9B6C-259059685792.jpeg
    537.3 KB · Views: 146
  • B84DC83C-E887-4F37-B949-76AEA3009809.jpeg
    B84DC83C-E887-4F37-B949-76AEA3009809.jpeg
    2.7 MB · Views: 151
Last edited:
Hello, and Thankyou Narkeleptk, Ronsimson,
Today I have learned much, so I ordered a couple of those GDTs, and also checked voltages coming from input on VDD/voltage out/bypass. On Narkeleptks insight:

unsure of how to check what the voltage needs to be, tracing output to next known ic?

could this also be a driver issue, it runs 6 individual 7segment display looking for equivalent non obsolete package driver QSOP-24 ( as1116e )
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top