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Had a crash awhile back while using a milling bit on my Grizzly 7x12 mini lathe.? Motor stalled and fuse blew.? I put in a new fuse, but motor won't run.? Are there any other circuit breakers/fuses that could be the problem?? Or, am I looking at a blown motor?
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Does the fuse blow as soon it given power?
It could different problem not the motor.
Dave?
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? ??? Is this the lathe?
see page 39
??? animal
On 6/12/24 6:18 PM, Arthur Coe wrote:
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Had a crash awhile back while using a milling bit on my Grizzly
7x12 mini lathe.? Motor stalled and fuse blew.? I put in a new
fuse, but motor won't run.? Are there any other circuit
breakers/fuses that could be the problem?? Or, am I looking at a
blown motor?
|
On Jun 12, 2024, at 6:56?PM, mike allen via groups.io <animal@...> wrote:
? ??? Is this the lathe?
see page 39 ??? animal
On 6/12/24 6:18 PM, Arthur Coe wrote:
Had a crash awhile back while using a milling bit on my Grizzly
7x12 mini lathe.? Motor stalled and fuse blew.? I put in a new
fuse, but motor won't run.? Are there any other circuit
breakers/fuses that could be the problem?? Or, am I looking at a
blown motor?
If anything is “blown” it is most likely one of the MOSFETs on the motor controller PCB and not the motor. ? It costs about a buck to replace if you can DIY, or more like $100 to have someone do it for you. ? So it might be work reading up and learning to diagnose this.
The first test I would do is to disconnect the motor and see if there is power coming out of the driver board. ?For that, you should replace the motor with some kind of dummy load and measure the voltage. ?If the power seems good, the motor is bad, but if the power is not good, it is one of the output transistors. ? They are cheap but you have to know what you are doing
There are a few other parts that can blow as a result of the fuse or mosfet blowing. ??
Or if you are EXCEPTIONALLY lucky, a loose connection.
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??? I believe ya can test the motor by hittin it with a good
cordless tool battery . Are these boards SMT or they still
through-hole ? boards ?
animal
On 6/12/24 7:17 PM, Chris Albertson
wrote:
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On Jun 12, 2024, at 6:56?PM, mike allen via groups.io
<animal@...> wrote:
? ??? Is this the lathe?
see page 39
??? animal
On 6/12/24 6:18 PM, Arthur
Coe wrote:
Had a crash awhile back while using a milling bit on my
Grizzly 7x12 mini lathe.? Motor stalled and fuse blew.?
I put in a new fuse, but motor won't run.? Are there any
other circuit breakers/fuses that could be the problem??
Or, am I looking at a blown motor?
If anything is “blown” it is most likely one of the MOSFETs on
the motor controller PCB and not the motor. ? It costs about a
buck to replace if you can DIY, or more like $100 to have
someone do it for you. ? So it might be work reading up and
learning to diagnose this.
The first test I would do is to disconnect the motor and see
if there is power coming out of the driver board. ?For that, you
should replace the motor with some kind of dummy load and
measure the voltage. ?If the power seems good, the motor is bad,
but if the power is not good, it is one of the output
transistors. ? They are cheap but you have to know what you are
doing
There are a few other parts that can blow as a result of the
fuse or mosfet blowing. ??
Or if you are EXCEPTIONALLY lucky, a loose connection.
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Replaced fuse.? Motor still won't turn on - new fuse didn't blow.
On Wednesday, June 12, 2024 at 06:25:58 PM PDT, davesmith1800 <davesmith1@...> wrote:
Does the fuse blow as soon it given power?
It could different problem not the motor.
Dave?
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Yes, that's the lathe.? Pulled the brushes and they are both about an inch long - I'm assuming it is not the brushes.
On Wednesday, June 12, 2024 at 06:56:57 PM PDT, mike allen <animal@...> wrote:
? ??? Is this the lathe?
see page 39
??? animal
On 6/12/24 6:18 PM, Arthur Coe wrote:
Had a crash awhile back while using a milling bit on my Grizzly
7x12 mini lathe.? Motor stalled and fuse blew.? I put in a new
fuse, but motor won't run.? Are there any other circuit
breakers/fuses that could be the problem?? Or, am I looking at a
blown motor?
|
ya could pull the motor & hook a volt meter to the leads
& spin it with a drill & see if ya get any voltage out .
I'd try to see if it spins with a tool battery first .
animal
On 6/12/24 7:53 PM, Arthur Coe wrote:
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Show quoted text
Yes, that's the lathe.?
Pulled the brushes and they are both about an inch long - I'm
assuming it is not the brushes.
On Wednesday, June 12, 2024 at 06:56:57 PM PDT, mike
allen <animal@...> wrote:
? ??? Is this the lathe?
see page 39
??? animal
On
6/12/24 6:18 PM, Arthur Coe wrote:
Had a crash awhile back while using a milling bit on
my Grizzly 7x12 mini lathe.? Motor stalled and fuse
blew.? I put in a new fuse, but motor won't run.? Are
there any other circuit breakers/fuses that could be the
problem?? Or, am I looking at a blown motor?
|
??? Unplug the machine , label all the wires to the board &
double check a few time than pull the board & start looking
for burnt components & give the board the sniff test .
Sometime yer nose can find the bad part .
animal
On 6/12/24 7:53 PM, Arthur Coe wrote:
toggle quoted message
Show quoted text
Yes, that's the lathe.?
Pulled the brushes and they are both about an inch long - I'm
assuming it is not the brushes.
On Wednesday, June 12, 2024 at 06:56:57 PM PDT, mike
allen <animal@...> wrote:
? ??? Is this the lathe?
see page 39
??? animal
On
6/12/24 6:18 PM, Arthur Coe wrote:
Had a crash awhile back while using a milling bit on
my Grizzly 7x12 mini lathe.? Motor stalled and fuse
blew.? I put in a new fuse, but motor won't run.? Are
there any other circuit breakers/fuses that could be the
problem?? Or, am I looking at a blown motor?
|
Problem solved.? It was operator stupidity.? I had pushed the emergency shut off button down before I replaced the fuse.? Forgot to open it back up.? Argggggg!? Oh well, at least I didn't start full scale disassembly.
On Wednesday, June 12, 2024 at 08:16:22 PM PDT, mike allen <animal@...> wrote:
??? Unplug the machine , label all the wires to the board &
double check a few time than pull the board & start looking
for burnt components & give the board the sniff test .
Sometime yer nose can find the bad part .
animal
On 6/12/24 7:53 PM, Arthur Coe wrote:
Yes, that's the lathe.?
Pulled the brushes and they are both about an inch long - I'm
assuming it is not the brushes.
On Wednesday, June 12, 2024 at 06:56:57 PM PDT, mike
allen <animal@...> wrote:
? ??? Is this the lathe?
see page 39
??? animal
On
6/12/24 6:18 PM, Arthur Coe wrote:
Had a crash awhile back while using a milling bit on
my Grizzly 7x12 mini lathe.? Motor stalled and fuse
blew.? I put in a new fuse, but motor won't run.? Are
there any other circuit breakers/fuses that could be the
problem?? Or, am I looking at a blown motor?
|
??? Look at it this way , ya were just testing the emergency
switch which a guy/gal should do every once in a while & it
passed . Glad i was something simple .
yea that's it
animal
On 6/12/24 9:59 PM, Arthur Coe wrote:
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Show quoted text
Problem solved.? It was
operator stupidity.? I had pushed the emergency shut off
button down before I replaced the fuse.? Forgot to open it
back up.? Argggggg!? Oh well, at least I didn't start full
scale disassembly.
On Wednesday, June 12, 2024 at 08:16:22 PM PDT, mike
allen <animal@...> wrote:
??? Unplug the machine , label all the wires to the
board & double check a few time than pull the
board & start looking for burnt components &
give the board the sniff test . Sometime yer nose can
find the bad part .
animal
On
6/12/24 7:53 PM, Arthur Coe wrote:
Yes, that's the lathe.? Pulled the
brushes and they are both about an inch long - I'm
assuming it is not the brushes.
On Wednesday, June 12, 2024 at 06:56:57 PM
PDT, mike allen <animal@...>
wrote:
? ??? Is this the lathe?
see page 39
??? animal
On
6/12/24 6:18 PM, Arthur Coe wrote:
Had a crash awhile back while using a
milling bit on my Grizzly 7x12 mini lathe.?
Motor stalled and fuse blew.? I put in a new
fuse, but motor won't run.? Are there any
other circuit breakers/fuses that could be the
problem?? Or, am I looking at a blown motor?
|
I am glad was simple fix.?
Dave?
toggle quoted message
Show quoted text
On Wed, Jun 12, 2024 at 09:59 PM, Arthur Coe wrote:
?
Problem solved.? It was operator stupidity.? I had pushed the emergency shut off button down before I replaced the fuse.? Forgot to open it back up.? Argggggg!? Oh well, at least I didn't start full scale disassembly.
?
On Wednesday, June 12, 2024 at 08:16:22 PM PDT, mike allen <animal@...> wrote:
?
?
??? Unplug the machine , label all the wires to the board & double check a few time than pull the board & start looking for burnt components & give the board the sniff test . Sometime yer nose can find the bad part .
animal
On 6/12/24 7:53 PM, Arthur Coe wrote:
Yes, that's the lathe.? Pulled the brushes and they are both about an inch long - I'm assuming it is not the brushes.
?
On Wednesday, June 12, 2024 at 06:56:57 PM PDT, mike allen <animal@...> wrote: ?
?
? ??? Is this the lathe? see page 39
??? animal
On 6/12/24 6:18 PM, Arthur Coe wrote:
Had a crash awhile back while using a milling bit on my Grizzly 7x12 mini lathe.? Motor stalled and fuse blew.? I put in a new fuse, but motor won't run.? Are there any other circuit breakers/fuses that could be the problem?? Or, am I looking at a blown motor?
?
?
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Now that it's been overcome by events, don't forget LMS has a good troubleshooting guide:
?< >
Roy
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I did not know about that resource - thanks.
On Thursday, June 13, 2024 at 05:47:42 PM PDT, Roy via groups.io <roylowenthal@...> wrote:
Now that it's been overcome by events, don't forget LMS has a good troubleshooting guide:
?< >
Roy
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I have use them one time and they are great. They lot of little things that are hard to find.?
Ebay is like old west and try to avoid Ebay but have will throw dice ?.?
Remember they not like Amazon and Walmart on shipping.
? So I have few things plan to buy after I have larger order?
For resources I also use Amazon , Walmart and Home Depot too watch there pricing they very alot. You even find things at Hobby Loby
Dave?
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Show quoted text
On Thu, Jun 13, 2024 at 10:02 PM, Arthur Coe wrote:
?
I did not know about that resource - thanks.
?
On Thursday, June 13, 2024 at 05:47:42 PM PDT, Roy via groups.io <roylowenthal@...> wrote:
?
?
Now that it's been overcome by events, don't forget LMS has a good troubleshooting guide:
?< >
Roy
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I had problems with motors in 1970's when hot like is today.
The way was resolved was to add more cooling.
Either do not use your mini lathe over 90°F or add cooling fans.
I even had running water on some motors outside so could use motor in heat.
I know does not help after you problem by can help others before they loose there motor.
Hand drill motors was problem no way to keep them very close to the mini lathe motor. I could only repair them and hope coils did not burn.
Dave
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On Wed, Jun 12, 2024 at 06:18 PM, Arthur Coe wrote:
Had a crash awhile back while using a milling bit on my Grizzly 7x12 mini lathe.? Motor stalled and fuse blew.? I put in a new fuse, but motor won't run.? Are there any other circuit breakers/fuses that could be the problem?? Or, am I looking at a blown motor?
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davesmith1800