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Old 06-14-2022, 10:21 AM   #1
Ritchie_Uk
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Default BAUN - UVST - 0617,Can anybody Identify these Please?

Hi there

Is anybody able to Identify these 2 Components Please?

I am Looking for Tech info alsp Please as its for a BAUHN Portable Record Deck

Model Number - BAUN - UVST - 0617

I have another IC on the Unit, that is Suspect, but the Markings have been Scraped off, or wernt on it to start with

Thanks
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Old 06-14-2022, 04:20 PM   #2
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

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Old 06-14-2022, 04:27 PM   #3
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

The diode is easy, Schottky diode 40v 1 amp.
Can you clean off the ic with something like alcohol so the logo shows up better?
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Old 06-14-2022, 04:41 PM   #4
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

Hi R_J

The IC has had the markings taken off, and when I spoke to the manufacturer, they said, " We dont give repair info"

Do you have any idea what the Component is with the number 54, or how I can ID it please?
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Old 06-14-2022, 04:52 PM   #5
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

Any Idea what the Manufacturer Logo is on the MOSFET looking Component?
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Old 06-14-2022, 05:58 PM   #6
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

The board marking suggests it is a ic not a mosfet, What is wrong with it? how can you know the part is bad if you don't know what it is.
Can you provide a couple pictures of the complete board, both sides?

Last edited by R_J; 06-14-2022 at 06:08 PM..
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Old 06-14-2022, 06:53 PM   #7
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

Hi R_J

The 2nd component has shorted, and started to melt

The IC with many legs possibly is Ok
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File Type: jpeg 44F207A8-1DD0-4BF1-BB4C-51470D0886FD.jpeg (346.7 KB, 12 views)
File Type: jpeg E9B71714-A68D-4603-8944-350466D5C7F1.jpeg (143.4 KB, 19 views)
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Old 06-14-2022, 06:57 PM   #8
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

The Board isnt shorted now, that I have removed the 5 legged Chip.

I cant seem to ID the Manufacturer, and it seems to say HK 54 on it
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Old 06-14-2022, 07:59 PM   #9
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

But where is it in the circuit? Is it part of the power supply circuit, this might help to identify it.
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Old 06-14-2022, 08:32 PM   #10
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

Hi R_J

There are only 2 boards

The Simple board, is basically just an input, where the Power comes in from the Power adapter.

We can ignore this, as itís just a wire connecting it to the main board

The Populated board as you can see, has quite a few components on.
I have removed the shorted components, which was dragging the whole unit down.

The Left silver knob is the Power switch
The right is the Tone

The unit has an internal battery, that is dead, but I charged it manually, and the whole unit works
So itís not charging due to that component

That is all I seem to know

I hope this helps?
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File Type: jpg 2BE4227B-F58A-4C3B-B304-18EB87FE92B6.jpg (226.6 KB, 14 views)
File Type: jpg 259F2C33-67DC-4768-957B-FE94B7C53B83.jpg (380.2 KB, 18 views)
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Old 06-14-2022, 09:04 PM   #11
R_J
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

Then is likely has to do with charging the battery, trace out the circuit as I can't tell where the traces connect to based on the picture.
There are lithium battery charge ic's like the Tp4054, this may be similar made by some odd manufacture
The TP4054 might be close, check the datasheet and see if the pins line up. It looks close from what I can see.

Last edited by R_J; 06-14-2022 at 09:41 PM..
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Old 06-14-2022, 09:47 PM   #12
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

Thankyou

I have emailed a couple of component suppliers, to see if they can sell me equivalents.
I will keep you updated.

Thanks
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Old 06-15-2022, 01:46 AM   #13
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

logo looks close
http://www.microne.com.cn/
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Old 06-15-2022, 03:49 AM   #14
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

His TJ

Great detective work.

What do you think the component is?
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Old 06-15-2022, 04:02 AM   #15
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

what is the black socket on the right for ? u1 looks like it may connect to it
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Old 06-15-2022, 09:08 AM   #16
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

is it related to a lithium battery?
ME4054?
http://www.microne.com.cn/ProductDetail.aspx?id=100
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Old 06-15-2022, 01:31 PM   #17
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

Hi Folks - Just got back
Thanks for your responses

The component companies haven’t got a clue what it could be

This is the product
https://www.whathifi.com/news/aldi-r...able-just-ps30
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Old 06-15-2022, 01:44 PM   #18
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

Here
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File Type: jpg DD73E8F4-9ACD-49BA-9D01-B964A713CA57.jpg (348.4 KB, 10 views)
File Type: jpg 91F710CF-516F-40FB-8516-8012B3AF783C.jpg (107.5 KB, 10 views)

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Old 06-15-2022, 01:59 PM   #19
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

Here is a photo of the MicrOne version, the logo and markings are different, but I suspect the operation will be the same.

I asked if you traced out the pins to see if this is the same ic, For example, pin 3 seems to connect to CON3, is this where the battery connects???
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File Type: jpg ME4054M5G SOT23-5.jpg (138.1 KB, 10 views)
File Type: jpg ic_pinout.jpg (693.2 KB, 7 views)

Last edited by R_J; 06-15-2022 at 02:19 PM..
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Old 06-15-2022, 06:03 PM   #20
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Default Re: BAUN - UVST - 0617,Can anybody Identify these Please?

from here

https://www.s-manuals.com/smd/54

found this

https://www.s-manuals.com/pdf/datash...054_tpasic.pdf
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