BAUN - UVST - 0617,Can anybody Identify these Please?

[Ritchie_Uk]

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

[Ritchie_Uk]

No Replies?

[R_J]

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?

[Ritchie_Uk]

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?

[Ritchie_Uk]

Any Idea what the Manufacturer Logo is on the MOSFET looking Component?

[R_J]

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?

[Ritchie_Uk]

Hi R_J

The 2nd component has shorted, and started to melt

The IC with many legs possibly is Ok

[Ritchie_Uk]

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

[R_J]

But where is it in the circuit? Is it part of the power supply circuit, this might help to identify it.

[Ritchie_Uk]

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 it’s 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 it’s not charging due to that component

That is all I seem to know

I hope this helps?

[R_J]

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.

[Ritchie_Uk]

Thankyou

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

Thanks

[stj]

logo looks close
http://www.microne.com.cn/

[Ritchie_Uk]

His TJ

Great detective work.

What do you think the component is?

[petehall347]

what is the black socket on the right for ? u1 looks like it may connect to it

[stj]

is it related to a lithium battery?
ME4054?
http://www.microne.com.cn/ProductDetail.aspx?id=100

[Ritchie_Uk]

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

[Ritchie_Uk]

Here

[R_J]

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???

[noppa]

from here

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

found this

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