wbo2 testing question

[rr]

Yes, the dot is pin 1 on iso1. Without a sensor hooked up the heater
ready LED should come on within 10 seconds. Then J8 will move
from 2.5 V.

BobR.


Xin wrote:

> I just got everything soldered.  Applied 14 volts and I am getting 2.5
> volt at J8.
>
> I am suspecting that I got iso1 in back wards.  Here is my question, how
> do I tell
> which way the iso1 chip is up?  There is a dot on a corner.  Is that pin
> 1?
>
> If I do have it backwards, what is the best way of getting it out?
> Drill?
>
> thanks,
>
> Xin
>

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