jbbrooks99@yahoo.com (John) wrote in message news:<c2500c83.0312090608.63876ff@posting.google.c om>...
> I removed the automatic transmission control unit from my '91 accord
> and opened it up. The capacitor marked C32 which is a 330uf 10v
> electrolytic has failed and leaked electrolyte onto the board nearby,
> giving it a black appearance. Also the resistor marked R41 is burnt.
> It is color coded Brown-Green-"BURNT" and has a gold tolerance band.
> I guess the burnt band is a Black band so this would be a 15 ohm
> resistor, just like the one next to it. It and the one next to it
> measure about 15 ohms. Does anyone know if 15 ohms is correct for
> R41? I have read on this forum that there are two resistors that
> fail. Does anyone know which one it is?
>
> I can easily replace these 2 parts, but my questions are: What makes
> these parts fail and is there another commonly-failed part that makes
> them go out that should be replaced while I have the TCU out of the
> car?


electrolytic capacitors "perforate" with age. the electrolyte breaks
down and there is a burn through between conductors. i don't have a
tcu handy, but will look in my box tomorrow to see if i can find the
resistor value.
Chip