Craftsman - Model 137.248830 - 3.0 HP
<Not the best (by a long shot) But mine...>
Used it today to rip and crosscut (with sled)... Finished up a crosscut,
turned the switch off. Once blade stopped spinning, removed the work and
the sled.
Unplugged from power supply to use the CMS... Went back a little later,
plugged the unit back into the power supply, flipped the switch... Nothing.
Test power supply, other tools run fine....
*#@*&....
RTFM - Three possible causes:
1. Saw not plugged in - Yes it is
2. Fuse Blown or CB tripped - Saw no mention in manual for fuse, CB (Reset)
still in depressed mode.
3. Cord damaged - Nothing visible, only exposed connections are Grounds, all
are secure, no other visible connections...
Is there a fuse, or simply the Circuit Breaker??
I'm puzzled, work stops... Any suggestions?
Rick
--
Computer recommends - Hard drinking calypso poet
could be the start/run switch is not going from run to start
position. Some times the little springs that pull it back to
the start position get weak or break??
"pray4surf" <[email protected]> wrote in message
news:[email protected]...
: I'll be back...
Warned you....
I really need to get handier with the multimeter...
Testing for AC volts:
thru power supply cord - 121 VAC
thru switch CB assy - Switch off - 2.2VAC
Switch on - 22.0VAC
Prognosis - bad Switch/CB ???
Not a lot accessible to test
Three wires coming to switch (power cord Hot/black,
Neutral/white,
Ground/green, simple blade type connections. black and white
terminate at
switch, green to chassis.
Three wires leaving switch to motor (black, white, green)
Switch CB Assy - neutral passes thru CB, black thru switch.
CB never 'popped' - replies include 'resetting/recycling'
CB, but how is
that possible if I can't get 'it' to pop ??
Both switch and CB appear to be sealed units, was a lot of
sawdust
(surprised me) within the plastic housing (two screws to
remove)...
It's getting dark, I'll read up on use of multimeter...
'checking continuity
/ checking for voltage' etc...
We can eliminate motor 'dead spot', I've spun the arbor by
hand..
No motor hum with power on.
Abstained from compressed air, but have vacuumed.
No visible/tactile evidence of a reset button on the motor
itself. This is a
fairly new unit (less than 2 years old)..
Plus - Free advice on the internet - isn't this a great
place :-)
Rick
Hey stranger :)
Drop me a line on the side (rcmr at telus dot net)
Not here too much any more...signal to noise ratio is out of whack
Rob
http://www.robswoodworking.com
Phil Anderson wrote:
> Try taking the switch apart and blow it out with compressed air. It has
> worked for me on numerous occasions.
>
> Best Regards, Phil
>
>
>>pray4surf Wrote:
>>
>>>Craftsman - Model 137.248830 - 3.0 HP
>>>
>>>Not the best (by a long shot) But mine...
>>>
>>>Used it today to rip and crosscut (with sled)... Finished up a
>>>crosscut,
>>>turned the switch off.
>
> <snip> Went back a little
>
>>>later,
>>>plugged the unit back into the power supply, flipped the switch...
>>>Nothing.
>>>Test power supply, other tools run fine....
>
>
>
>
--
http://www.robswoodworking.com
"pray4surf" <[email protected]> wrote in message
news:[email protected]...
: Craftsman - Model 137.248830 - 3.0 HP
:
<snipped prelim info - simply put - TS won't start..>
Thanks to all...
Just got back from my real job, thanks for all the insight... Got my trusty
digital multimeter sitting on my lap.. And I'll get to work troubleshooting
the electrical. Looks a my initial focus will be in the start switch area...
I'll be back...
Rick
Try taking the switch apart and blow it out with compressed air. It has
worked for me on numerous occasions.
Best Regards, Phil
> pray4surf Wrote:
>> Craftsman - Model 137.248830 - 3.0 HP
>>
>> Not the best (by a long shot) But mine...
>>
>> Used it today to rip and crosscut (with sled)... Finished up a
>> crosscut,
>> turned the switch off.
<snip> Went back a little
>> later,
>> plugged the unit back into the power supply, flipped the switch...
>> Nothing.
>> Test power supply, other tools run fine....
Sometimes, universal motors have a dead spot. I wonder if you turn the blade
by hand say 45 degrees and then tried to start it if it would work.
max
>
> I used to have a saw that would occasionally refuse to start. It was
> sawdust geeting into the motor and clogging the centrifugal switch that
> powered the starter windings. You could hear the motor hum but it just
> wouldn't start moving. Sometmes I would just take a stick and try to
> get the blade spinning and the motor would take off. It took a couple
> hours to disassemble the motor to clean the inside.
>
> I doubt that this is the problem described here.
>
> Dick
Well maybe when you unplugged it the connection to the prong that plugs into
the cord broke. Being internal it would look ok on the outside. Like the
other guys said, voltmeter time. Turn the saw on and check for continuity to
ground on each prong.
"pray4surf" <[email protected]> wrote in message
news:[email protected]...
> Craftsman - Model 137.248830 - 3.0 HP
>
> <Not the best (by a long shot) But mine...>
>
> Used it today to rip and crosscut (with sled)... Finished up a crosscut,
> turned the switch off. Once blade stopped spinning, removed the work and
> the sled.
>
> Unplugged from power supply to use the CMS... Went back a little later,
> plugged the unit back into the power supply, flipped the switch...
Nothing.
> Test power supply, other tools run fine....
>
>
>
"pray4surf" <[email protected]> wrote in message
news:[email protected]...
> Craftsman - Model 137.248830 - 3.0 HP
>
> <Not the best (by a long shot) But mine...>
>
> Used it today to rip and crosscut (with sled)... Finished up a crosscut,
> turned the switch off. Once blade stopped spinning, removed the work and
> the sled.
>
> Unplugged from power supply to use the CMS... Went back a little later,
> plugged the unit back into the power supply, flipped the switch...
Nothing.
> Test power supply, other tools run fine....
>
> *#@*&....
>
> RTFM - Three possible causes:
>
> 1. Saw not plugged in - Yes it is
> 2. Fuse Blown or CB tripped - Saw no mention in manual for fuse, CB
(Reset)
> still in depressed mode.
> 3. Cord damaged - Nothing visible, only exposed connections are Grounds,
all
> are secure, no other visible connections...
>
> Is there a fuse, or simply the Circuit Breaker??
Did you recycle the master circuit breaker? Most of the time, these things
don't look tripped, and you must manually reset them.
Jim
"pray4surf" <[email protected]> wrote in
news:[email protected]:
> Craftsman - Model 137.248830 - 3.0 HP
>
> <Not the best (by a long shot) But mine...>
>
> Used it today to rip and crosscut (with sled)... Finished up a
> crosscut, turned the switch off. Once blade stopped spinning, removed
> the work and the sled.
>
> Unplugged from power supply to use the CMS... Went back a little
> later, plugged the unit back into the power supply, flipped the
> switch... Nothing. Test power supply, other tools run fine....
>
> *#@*&....
>
> RTFM - Three possible causes:
>
> 1. Saw not plugged in - Yes it is
> 2. Fuse Blown or CB tripped - Saw no mention in manual for fuse, CB
> (Reset) still in depressed mode.
> 3. Cord damaged - Nothing visible, only exposed connections are
> Grounds, all are secure, no other visible connections...
>
> Is there a fuse, or simply the Circuit Breaker??
>
> I'm puzzled, work stops... Any suggestions?
>
> Rick
>
Switch clogged with sawdust, precluding connection? Power disconnect,
disassemble, blow out with compressed air, reassemble. Sometimes works,
and the price is right.
Or it could be something else. What does the digital multimeter tell
you? (These are relatively cheap diagnostic tools which should be in
everyone's kit.)
Good luck. Unless you wanted to buy a new saw anyway.
Patriarch
: I'll be back...
Warned you....
I really need to get handier with the multimeter...
Testing for AC volts:
thru power supply cord - 121 VAC
thru switch CB assy - Switch off - 2.2VAC
Switch on - 22.0VAC
Prognosis - bad Switch/CB ???
Not a lot accessible to test
Three wires coming to switch (power cord Hot/black, Neutral/white,
Ground/green, simple blade type connections. black and white terminate at
switch, green to chassis.
Three wires leaving switch to motor (black, white, green)
Switch CB Assy - neutral passes thru CB, black thru switch.
CB never 'popped' - replies include 'resetting/recycling' CB, but how is
that possible if I can't get 'it' to pop ??
Both switch and CB appear to be sealed units, was a lot of sawdust
(surprised me) within the plastic housing (two screws to remove)...
It's getting dark, I'll read up on use of multimeter... 'checking continuity
/ checking for voltage' etc...
We can eliminate motor 'dead spot', I've spun the arbor by hand..
No motor hum with power on.
Abstained from compressed air, but have vacuumed.
No visible/tactile evidence of a reset button on the motor itself. This is a
fairly new unit (less than 2 years old)..
Plus - Free advice on the internet - isn't this a great place :-)
Rick
On Wed, 09 Mar 2005 10:28:46 GMT, "aaa" <zoro @ excite.com> wrote:
>Nope saw On but since you are checking the continuity of the cord end it
>isn't plugged into a power source. Continuity of the saw only.
Ah. "Saw unplugged" is a significant point, and an entirely different
testing modality.
>"LRod" <[email protected]> wrote in message
>news:[email protected]...
>> On Mon, 07 Mar 2005 08:09:18 GMT, "aaa" <zoro @ excite.com> wrote:
>>
>> >Well maybe when you unplugged it the connection to the prong that plugs
>into
>> >the cord broke. Being internal it would look ok on the outside. Like the
>> >other guys said, voltmeter time. Turn the saw on and check for continuity
>to
>> >ground on each prong.
>>
>> Yikes. I don't want to get all semantical here, but someone reading
>> that could toast their meter. Check for continuity with the saw OFF.
>> Check the voltage with the saw ON.
--
LRod
Master Woodbutcher and seasoned termite
Shamelessly whoring my website since 1999
http://www.woodbutcher.net
On Mon, 07 Mar 2005 03:19:48 GMT, "pray4surf" <[email protected]>
wrote:
>Craftsman - Model 137.248830 - 3.0 HP
>
><Not the best (by a long shot) But mine...>
>
>Used it today to rip and crosscut (with sled)... Finished up a crosscut,
>turned the switch off. Once blade stopped spinning, removed the work and
>the sled.
>
>Unplugged from power supply to use the CMS... Went back a little later,
>plugged the unit back into the power supply, flipped the switch... Nothing.
>Test power supply, other tools run fine....
>
>*#@*&....
>
>RTFM - Three possible causes:
>
>1. Saw not plugged in - Yes it is
>2. Fuse Blown or CB tripped - Saw no mention in manual for fuse, CB (Reset)
>still in depressed mode.
>3. Cord damaged - Nothing visible, only exposed connections are Grounds, all
>are secure, no other visible connections...
>
>Is there a fuse, or simply the Circuit Breaker??
>
>I'm puzzled, work stops... Any suggestions?
Thermal reset button on motor. Usually on one end but may be
elsewhere on yours.
Replace Conductivity with Continuity...
Rick
--
Computer recommends - Hard drinking calypso poet
"pray4surf" <[email protected]> wrote in message
news:[email protected]...
: Problem solved...
:
: No conductivity with switch in on position. Removed switch, noticed carbon
: buildup on contacts, cleaned contacts, reinstalled switch - tested ok.
: plugged in saw to electrical source and started motor...
:
: Reassembled and returned to service...
:
: Thanks again to all responses...
:
: Rick
:
:
I used to have a saw that would occasionally refuse to start. It was
sawdust geeting into the motor and clogging the centrifugal switch that
powered the starter windings. You could hear the motor hum but it just
wouldn't start moving. Sometmes I would just take a stick and try to
get the blade spinning and the motor would take off. It took a couple
hours to disassemble the motor to clean the inside.
I doubt that this is the problem described here.
Dick
"pray4surf" <[email protected]> wrote in message
RTFM - Three possible causes:
>
> 1. Saw not plugged in - Yes it is
> 2. Fuse Blown or CB tripped - Saw no mention in manual for fuse, CB
> (Reset)
> still in depressed mode.
> 3. Cord damaged - Nothing visible, only exposed connections are Grounds,
> all
> are secure, no other visible connections...
What about from the power cord to switch to motor connections? Check with a
meter to see if power is at the switch and getting past it.
>
> Is there a fuse, or simply the Circuit Breaker??
Some motors have a manual reset button and you say it is already depressed.
Can I assume yo not only looked at it, but also tried to push it in "just in
case"?
On Mon, 07 Mar 2005 08:09:18 GMT, "aaa" <zoro @ excite.com> wrote:
>Well maybe when you unplugged it the connection to the prong that plugs into
>the cord broke. Being internal it would look ok on the outside. Like the
>other guys said, voltmeter time. Turn the saw on and check for continuity to
>ground on each prong.
Yikes. I don't want to get all semantical here, but someone reading
that could toast their meter. Check for continuity with the saw OFF.
Check the voltage with the saw ON.
- -
LRod
Master Woodbutcher and seasoned termite
Shamelessly whoring my website since 1999
http://www.woodbutcher.net
I had the same problem. I just figured it out. The switch is bad. I
bypassed the switch and the motor worked.
pray4surf Wrote:
> Craftsman - Model 137.248830 - 3.0 HP
>
> Not the best (by a long shot) But mine...
>
> Used it today to rip and crosscut (with sled)... Finished up a
> crosscut,
> turned the switch off. Once blade stopped spinning, removed the work
> and
> the sled.
>
> Unplugged from power supply to use the CMS... Went back a little
> later,
> plugged the unit back into the power supply, flipped the switch...
> Nothing.
> Test power supply, other tools run fine....
>
> *#@*&....
>
> RTFM - Three possible causes:
>
> 1. Saw not plugged in - Yes it is
> 2. Fuse Blown or CB tripped - Saw no mention in manual for fuse, CB
> (Reset)
> still in depressed mode.
> 3. Cord damaged - Nothing visible, only exposed connections are
> Grounds, all
> are secure, no other visible connections...
>
> Is there a fuse, or simply the Circuit Breaker??
>
> I'm puzzled, work stops... Any suggestions?
>
> Rick
>
> --
> Computer recommends - Hard drinking calypso poet
--
vgjuarez
Let me know how it goes.
[email protected]
vgjuarez Wrote:
> I had the same problem. I just figured it out. The switch is bad. I
> bypassed the switch and the motor worked.
--
vgjuarez
The switch is bad. I bypassed the switch and the motor worked. I
replaced the switch with a toggle switch from Radio Shack. just pull
the wire ends off and plug them into the toggle switch. Piece of cake.
pray4surf Wrote:
> Craftsman - Model 137.248830 - 3.0 HP
>
> Not the best (by a long shot) But mine...
>
> Used it today to rip and crosscut (with sled)... Finished up a
> crosscut,
> turned the switch off. Once blade stopped spinning, removed the work
> and
> the sled.
>
> Unplugged from power supply to use the CMS... Went back a little
> later,
> plugged the unit back into the power supply, flipped the switch...
> Nothing.
> Test power supply, other tools run fine....
>
> *#@*&....
>
> RTFM - Three possible causes:
>
> 1. Saw not plugged in - Yes it is
> 2. Fuse Blown or CB tripped - Saw no mention in manual for fuse, CB
> (Reset)
> still in depressed mode.
> 3. Cord damaged - Nothing visible, only exposed connections are
> Grounds, all
> are secure, no other visible connections...
>
> Is there a fuse, or simply the Circuit Breaker??
>
> I'm puzzled, work stops... Any suggestions?
>
> Rick
>
> --
> Computer recommends - Hard drinking calypso poet
--
vgjuarez
"pray4surf" <[email protected]> wrote in message
news:[email protected]...
>
> 1. Saw not plugged in - Yes it is
> 2. Fuse Blown or CB tripped - Saw no mention in manual for fuse, CB
> (Reset)
> still in depressed mode.
> 3. Cord damaged - Nothing visible, only exposed connections are Grounds,
> all
> are secure, no other visible connections...
>
> Is there a fuse, or simply the Circuit Breaker??
I had a Craftsman that did that occasionally. Mine had a red reset button
on the motor. It always looked the same but when it did reset it would
click. Sometimes I had to wait a few hours for the reset switch to cool
down before it would reset.
But since the motor was working when you turned it off it sound more like a
short. Use a volt meter and narrow down the problem.
Nope saw On but since you are checking the continuity of the cord end it
isn't plugged into a power source. Continuity of the saw only.
"LRod" <[email protected]> wrote in message
news:[email protected]...
> On Mon, 07 Mar 2005 08:09:18 GMT, "aaa" <zoro @ excite.com> wrote:
>
> >Well maybe when you unplugged it the connection to the prong that plugs
into
> >the cord broke. Being internal it would look ok on the outside. Like the
> >other guys said, voltmeter time. Turn the saw on and check for continuity
to
> >ground on each prong.
>
> Yikes. I don't want to get all semantical here, but someone reading
> that could toast their meter. Check for continuity with the saw OFF.
> Check the voltage with the saw ON.
>
> - -
> LRod
>
> Master Woodbutcher and seasoned termite
>
> Shamelessly whoring my website since 1999
>
> http://www.woodbutcher.net