MSefi.com read only forum (Jan.15,2018)

I accidentally bridged all the pins of Q6, and based on my efforts so far, I may not get it repaired properly, or I may have damaged that part of the board. I am seeing < 1 ohm between each pin. I have tried a pushbutton solder sucker, a squeeze bulb, different sized wicks, different Hakko tips. Nothing is helping.

My question is, can I move on without this being remedied? I assume this part has something to do with the ignition LED, and I don't care if the LED works or not. The car is a Mustang SVO 2.3L and my initial set up will be MS3 (not X) with TFI ignition.

Art,

You can probably get away with a shorted Q6. R24 and R26 should prevent shorts to directly ground (but there could still be a constant draw on the power supply). If this was mine, I would:

- remove or cut one lead of R24 and/or D14 to prevent a possible short of VCC (the 5V power supply) to ground, AND
- remove or cut one lead of R26 to prevent shorting the processor's squirt-1 signal to ground.



This schematic is found here: http://www.megamanual.com/ms2/pcb.htm

Lance.