Help identifying SMD Transistor?
Can anybody figure out what transistor(?) this is? I'm not at all familiar, and was hoping it might jump out to someone. 
Thanks for taking a look!
Thanks for taking a look!
Attached Files
-
-
Re: Help identifying SMD Transistor?
It's not a transistor, U6 is likely a buck-converter in SOT23-5 package.
Can you tell us the markings... 9705AG, or 97Q5AG etc. -
Re: Help identifying SMD Transistor?
You might be able to use some alcohol to clean the flux from the ic and then you might make out the numbers, Also what is it from? sometimes that can help id the chip.
How many pins does it have? It looks like only 4Last edited by R_J; 07-23-2019, 07:25 PM.Comment
-
Re: Help identifying SMD Transistor?
I agree with redwire being a buck converter and RJ with the cleaning of the board.Comment
-
Re: Help identifying SMD Transistor?
Thank you for your help!
I tried cleaning it, and the top of it flaked off.
I removed it completely, and cleaned it up more, so we could at least see the traces.
The PCB is the main board from a Vantec NexStar-HX4R, Model: NST-640S3R-BK, Input: 12V DC 5.42A (USB 3.0 & eSATA External Hard Drive RAID Enclosure)
The PCB has the following information printed on it.
- EX-75-540G-01
- 20102111_V1.1
- 94V-0 HJX-01
- E333641
The stickers on the PCB have the following information.
- HD:4223
- HD:09580922
- Q1304JMB393
I have also attached photos of the whole PCB.
Thanks!Attached FilesLast edited by k3wf3w; 07-24-2019, 12:26 PM.Comment
-
-
Re: Help identifying SMD Transistor?
What are the numbers on U7? it looks like a similar partComment
-
Re: Help identifying SMD Transistor?
I believe I found the ic, It is a AUR9705. It seems U8 is setup as a 3.3v regulator (based on R65 & R67)
I would guess U7 would be 1.5v (check the values of R64 & R66)
Looks like AP3428A could be the replacementLast edited by R_J; 07-24-2019, 02:36 PM.Comment
-
Hello
Got this speaker from a friend , defective. Power led comes on and off , in a loop.
Disassembled, got the board out, and after a bit of measuring I found a low resistance on a 5v6 line. With a bit of current I found a transistor heating up on that line (labeled T1 and 113 as on pic).
After removing this guy, I got a value of 0.7 in diode mode on that 5v6 line, which before had 0.02 or something like that.
I tested powering it up without the IC, and the speaker turns on and stays on, and works fine
Still, I need to replace this transistor.... -
Hi,
As topic sais, i need help identifying a SOT23 NPN transistor.
Marking on the transistor is labeled 6CE, will try uploding a picture. -
Hi,
Can you help me with Identification​ of this component?
Photos attached
Thanks -
hi people, i need some help to identify a transistor(q14) that is missing on the board, so the gpu has no voltage i think that q14 activate the phases for gpu, but i dont have schematic or boardview, but i think its the same transistor than q15 and q16, thanks... -
Hello everyone,
I guess I need help from the masters to try and find what is frying a 2SC5669 transistor on the left channel of this front center Amp for a NAD T752.
Was working perfectly and all of a sudden I heard a pop, and then a glow from the amp. Not only did the 2SC5669 burn a leg, but R520 which is a 220 ohm resistor partially burned - it now measures 110 ohms.
I bought this amp second hand fairly cheap as it was not working, it went into protection mode. I finally traced it down to the same transistor Q510, the one that just popped. It was shorted...
Comment