Help finding part SS1070

[TQFP]

Hello,

Part 2 of my repair adventure. I'm trying to fix a PCB that received 12VDC instead of 5VDC. One part was physically blown and thanks to help on this forum I identified the part (Feeling FP6291 boost converter) and a place to buy a replacement. After removing the remains of the blow part, I found V+ was shorted to ground. The short was in an unmarked SOIC-14 IC, and after removing it I found some numbers on the bottom:

04506 2046
SS1070

There is also a capital "J" that looks like a manufacturer mark? I suspect the top row is date-code stuff. Searching around the Internet has turn up nothing useful.

This part seems to control the on/off function, as well as controlling the 6 motor speeds and driving the 6 LED indicators.

Any help identifying this part would be greatly appreciated!

 

[betwixt]

What is the PCB? Looks like an RF connector on the left side.

Presumably the FP6291 you refer to is off the picture or on a different board.
It is unusual for a manufacturer to print part numbers on the under side of a package, they are likely to be some batch or date code rather than device identification.

Brian.

 

[TQFP]

The connector on the left is the DC power jack. The blown FP6291 has been removed, it goes on the SOIC-6 footprint near the top of the photo. This is the one and only PCB. On the back are two 2-wire connectors, one goes to the motor, the other to the battery.

This is a hand-held massager made by "Southern Telecom", which has multiple sub-companies making all kinds of no-branded products you will find in stores like Target, etc. I find lots of no-brand electronics have chips in them that are exclusively found in places like China, with Chinese-only datasheets, etc. It is no surprise to me that I'm having a hard time finding the chips, but thanks to the forum, one of them was identified, so I'm half way to getting it fixed.

This massager was about $90, so worth fixing if I can find the parts, since there is literally nothing wrong with the unit physically, the motor and battery are fine, etc. There is a single button that turns the unit on and controls the speed, one level per press, then off: on-2-3-4-5-6-off ("on" is speed 1). There are 6 LEDs that turn on based on the speed. That is the whole circuit.

The second failed chip appears to control a voltage to the power section that will adjust the current to the motor (control the speed), and drive the LEDs. Kind of a specific chip, so if the numbers are only batch information, I was hoping someone might recognize the functionality.