AOG S2ADU or S2AOU - please help to identify

[Yazoo]

I've bought an EHX Superego Synth Engine for repair. There is an SMD chip which has been partially torn off, I think by the footswitch getting rotated. It is hard to read the name but it looks like AOG S2AOU or S2ADU. It has ten pins, 5 on each side. Can anybody hep me identify it please? Google is coming up blank.

Thanks in advance.

[Sweetalk]

Post a picture of it

[Yazoo]

I had to put it under a microscope to get the picture. Here it is.

[Rob Strand]

AOG
http://www.aogsemi.com/index

Not so easy to find the part.
Seems like not all parts/datasheets are available.
Then you have to find a chip in small quantities.

Maybe contact EHX.

[Yazoo]

Yes, odd that they don't make their datasheets available. I watch a lot of repair videos so I bought the entry level Andonstar microscope with a 4" screen and I am impressed by it. I put the chip back on and wired in some jumper wires, really single "whiskers" from multicore wire, to repair lifted traces. The worst part was trying to hold the chip in place. In the end I put some solder mask on to stop it moving. I had several attempts at re-soldering the legs and had to use solder braid to remove bridges. After all that, pin 10  came off, connected to ground (another pin is also connected to ground). The chip had been quite mangled. I think the footswitch had rotated and pushed it partially off. I just went ahead and powered it on and it actually passes signal which it didn't before. I'll have to play with it to check it is working properly but so far so good.

[Rob Strand]

Yes, odd that they don't make their datasheets available.

It's pretty normal for those lesser known Chinese semiconductor manufacturers.   They also have a habit of pulling datasheets for parts they no longer manufacture - no long term support at all.

I watch a lot of repair videos so I bought the entry level Andonstar microscope with a 4" screen and I am impressed by it.

Handy device.   As I get older and parts get smaller I find it harder and harder to do re-work - and it's very easy to do more damage than good unless you have the right equipment.

I put the chip back on and wired in some jumper wires, really single "whiskers" from multicore wire, to repair lifted traces. The worst part was trying to hold the chip in place. In the end I put some solder mask on to stop it moving. I had several attempts at re-soldering the legs and had to use solder braid to remove bridges. After all that, pin 10  came off, connected to ground (another pin is also connected to ground). The chip had been quite mangled. I think the footswitch had rotated and pushed it partially off. I just went ahead and powered it on and it actually passes signal which it didn't before. I'll have to play with it to check it is working properly but so far so good.

You did really well to get that far.