RIGOL DM3051 burned ic please help to identify

[architectus21st]

Hi.
ic marked: JDVAK or J0VAK
on pcb it is U603
TSSOP08 propably package.

Please help to identify this ic

Thanks in advance

[fzabkar]

JD = ECH8605 dual MOSFET

[architectus21st]

Thanks but i do not think it is this element.
all pins of this ic goes to different components... no .pins.
8 pin goes to big ceramic capacitor it suggest that is power....
7 pin goes to vias to another side of pcb ...

Seeking still ...

[architectus21st]

Picture and marked ic in circle.
It is screenshot taken from this thread:

https://www.eevblog.com/forum/reviews/rigol-dm3051-5-34-digit-multimeter/
3# picture from top

I do not have camera here cant make picture.

on ic in one line is:  JDVAK
nothing else at bottom ic or second line
one string no spaces.
no logo

[goaty]

Last picture cropped and rotated, but still can´t make out more

[fzabkar]

You're not helping us ...

How about this?

AAT3190, Skyworks, Positive/Negative Charge Pump for Voltage Bias, 2.7V to 5.5Vin, marking JDxyy, MSOP-8:
https://media.digikey.com/pdf/Data%20Sheets/Skyworks%20PDFs/AAT3190.pdf

[Chris56000]

Hi!

I would say, going from the position of U603 generally near the power supply electrolytics, etc., that Member Fzakbar has hit the nail on the head!

The OP has nothing to lose by trying one of these AAT3190 devices in the DM3051 – I did have a firmware–bricked DM3058 a while back but pocket–money shortages forced me to pass it on, so I can't offer any better pics myself I'm afraid!

Chris Williams

[architectus21st]

i will post picture at monday.
Schematics a this AAT3190 maybe pass....
GND is on correct pin and there also connected SOT-23 elements...
I seek where to buy this aat :-(
In EUROPE

[fzabkar]

Before replacing the IC, I would first verify that there is no short on either output.