I need the name of this sop8 IC
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‎2024-11-13 03:29 AM - last edited on ‎2024-11-13 03:44 AM by Andrew Neil
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?
 
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‎2024-11-13 03:46 AM
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
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‎2024-11-13 04:10 AM
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.
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‎2024-11-13 04:11 AM
@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 ...
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‎2024-11-13 05:00 AM
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.
Up vote any posts that you find helpful, it shows what's working..
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‎2024-11-13 05:12 AM
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.
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‎2024-11-13 06:31 AM
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
Up vote any posts that you find helpful, it shows what's working..