My WB refuses to work....
TROYXTROY
TROYXTROY at cox.net
Sat Mar 2 07:51:10 GMT 2002
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OK. Everything is together. I did the tests mentioned in the Dummy's =
Guide to Building a WB web page and the heater circuit checked out ok. =
When i tried the tests mentioned for the servo circuit, things didn't =
check out at all. =20
I've been trying to troubleshoot, but my lack of experience is really =
starting to show. Are there any common mistakes that i can check for? =
All my soldering connections appear to be ok. I did wash my board down =
with some electronic cleaner from radio shack. Could that have messed =
something up? It's supposed to be safe for this sort of stuff.
Some of my testing showed the following:
With the one end of the 100ohm resistor on J7 and the other on J5&6, i'm =
getting approx. 12.5v from J7 to J12. i should be seeing approx. 4v. =20
These tests were performed with the sensor connected:
car bat voltage =3D 14v
led: on
sensor: hot
J8 to J12 =3D 0v
Bat(-) to J8 =3D 12.6v
Bat(-) to J12 =3D 13.15v
J6 to J12 =3D -.006v
J6 to Bat(-) =3D 13.13v
J6 to J7 =3D -.006v
J5 to J7 =3D .001v
J5 to Bat(-) =3D 13.5v
Cathode side of D9 to J8 =3D -.373v
I was just measuring different voltages hoping that it would help =
somebody figure out what's going on. I've compared my board to several =
pictures on the net and it looks exactly the same as far as component =
placement.
Any suggestions?
This isn't looking good.
If this cannot be troubleshooted over the net, I'd gladly mail it out =
and pay somebody for their time to take a look at it. (If that wouldn't =
violate any user agreement)
Right at this point I'm approx $150 into this thing, not to mention =
several hours of labor too. I'd really hate to have to throw in the =
towel.
Thanks in advance for any help!
-Troy
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charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2713.1100" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>OK. Everything is =
together. I did the tests mentioned in the Dummy's Guide to =
Building=20
a WB web page and the heater circuit checked out ok. When i =
tried=20
the tests mentioned for the servo circuit, things didn't check out at =
all. =20
</FONT><FONT face=3DArial color=3D#000080 size=3D2></FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>I've been trying to =
troubleshoot, but=20
my lack of experience is really starting to show. Are there any =
common=20
mistakes that i can check for? All my soldering connections appear =
to be=20
ok. I did wash my board down with some electronic cleaner from =
radio=20
shack. Could that have messed something up? It's supposed to be =
safe for=20
this sort of stuff.</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>Some of my testing =
showed the=20
following:</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>With the one end of the =
100ohm=20
resistor on J7 and the other on J5&6, i'm getting approx. 12.5v from =
J7 to=20
J12. i should be seeing approx. 4v. </FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>These tests were =
performed with the=20
sensor connected:</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>car bat voltage =3D =
14v</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>led: on</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>sensor: =
hot</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>J8 to J12 =3D =
0v</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>Bat(-) to J8 =3D=20
12.6v</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>Bat(-) to J12 =3D =
13.15v</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>J6 to J12 =3D =
-.006v</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>J6 to Bat(-) =3D =
13.13v</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>J6 to J7 =3D =
-.006v</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>J5 to J7 =3D =
.001v</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>J5 to Bat(-) =3D =
13.5v</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>Cathode side of D9 to =
J8 =3D=20
-.373v</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>I was just measuring =
different=20
voltages hoping that it would help somebody figure out what's going =
on. =20
I've compared my board to several pictures on the net and it looks =
exactly the=20
same as far as component placement.</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>Any =
suggestions?</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>This isn't looking =
good.</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>If this cannot be =
troubleshooted over=20
the net, I'd gladly mail it out and pay somebody for their time to take =
a look=20
at it. (If that wouldn't violate any user agreement)</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>Right at this point I'm =
approx $150=20
into this thing, not to mention several hours of labor too. I'd =
really=20
hate to have to throw in the towel.</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#000080 size=3D2>Thanks in advance for =
any=20
help!</FONT></DIV>
<DIV><FONT face=3DArial color=3D#000080 =
size=3D2>-Troy</FONT></DIV></BODY></HTML>
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