Need help identifying IC on CGC Monster Bash

JMWRainwater

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Recently my Frankenstein motor stopped functioning despite the up/down switches registering & the motor receiving 12v.
I believe my next step is to replace the main drive transistor at Q55 however I'm having difficulty identifying the piece. It looks like this IC has the main & pre-drive transistors built into one package.
I've attached the schematic & a picture of the board with the circuit in question.

I've got an extra Ice Cold Beer motor I could try first & I've yet to try hooking up a 9v to the motor itself to rule out that it's still functioning, but wanted to gather this information in case it was useful for myself (or someone else since there seems to be a stark lack of information on the parts used on these boards).

I believe it's possibly one of these parts:
#LM555
#124-5005-00 (LM6132AIN)
#CA3085E

Any help is appreciated. I wish I could just use my 540s lol.

-JR
 

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It's a MOSFET array, and you can see the part number under the Q55A / Q57A designations.

BUK9K6R8



Before you replace it, you might want to hold it down with a BIC stick pen (with the end cap removed) while someone uses a hook tool or needle tip or a surface mount remelt station to re-touch solder to each line. If the chip gets hot, it can cause microcracks and a loss of continuity between the leg and the pad.
 
It's a MOSFET array, and you can see the part number under the Q55A / Q57A designations.

BUK9K6R8



Before you replace it, you might want to hold it down with a BIC stick pen (with the end cap removed) while someone uses a hook tool or needle tip or a surface mount remelt station to re-touch solder to each line. If the chip gets hot, it can cause microcracks and a loss of continuity between the leg and the pad.
This is very helpful, thank you. I'll report back with updates.
 
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