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I need the name of this sop8 IC

Volkann
Visitor

millenium mps 1000 drum module

I need the name of the sop8 integrated circuit. The ST logo on it says ua gb145. The 8th leg is +12 volt input. The 7th leg is gnd. The 3rd leg is 2t1 smd push button. The 1st leg is out +12. Can you tell me what this integrated circuit is? 

1000132200.jpg

6 REPLIES 6
Peter BENSCH
ST Employee

Welcome @Volkann, to the community!

The 2nd line here contains the date code, the marking is at the 1st line, here ending with UA.

Please try to recognize the letters/numbers at the beginning of the first line.

Regards
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

Thanks for the answer but the numbers and letters before ua have been deleted. I searched a lot but couldn't find anything. If you know this integrated circuit, please help.


@Peter BENSCH wrote:

Please try to recognize the letters/numbers at the beginning of the first line.


That part appears to be burnt out - so illegible.

@Volkann you might try asking on a "millenium drum module" forum to see if anyone with an undamaged one can tell you what it should say ...

You'd need an example that was legible. If this one has exploded or vented magic smoke it's going to be near impossible without a schematic or portion of one.

Could try acetone or other methods to inspect or light the part to see or raise the marks.

Might be easier to find someone with a working unit. 

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Thanks for the answer. I couldn't find a schematic. But when I short-circuit the 8th and 1st legs, the machine works.

but I can't turn it on or off with the button, I need someone who knows this integrated circuit then l can try to find simular.  

As Andrew suggests, forum's related to the product, rather than the IC, might be more productive at this point. Spare boards on eBay, part# markings on the PCB itself

Thomann Millennium MPS-1000

Reddit perhaps

https://www.reddit.com/r/edrums/comments/1bgjpem/millenium_mps1000_hihat_issues/?rdt=39766

https://www.thomann.de/intl/mythomann_retoure.html

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Up vote any posts that you find helpful, it shows what's working..