Grandkids R/C truck went up in smoke

[RedXT]

a bit of smoke came out and that was it
I havent been able to find the board GS-534R so perhaps I can change the chip but not sure what it is
The top reads MD2 ???, bottom 19?????
Any Ideas what it is and or would it need programming





Thanks Thomo

[Reschs]

Most likely the motor drive chip.

[wotnot]

Single motor H-bridge ~ similar to L9110 or TA6586




What brand is the R/C truck?

[RedXT]

No Name brand

So this should do it ?

No wait I think the connections were like this :

Both motors worked together and went forward and reverse

[wotnot]

Couldn't tell you ~ that's what a multimeter is for =) One would have to r/e the circuit a little to understand what they've done (p or n channel mosfet, estimated current handling, blabla..)

...likely the first step, would be removing the IC and checking the signal lines to the uPC (fwd/rev) are still ok (the dying chip may have destroyed the microcontroller outputs) ~ if they were good, then figure out what H-bridge chip they've used.