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Science Groups Forum Index » Engineering - Joining (Welding) » Lincoln TIG welder trouble -- no HF
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| Ignoramus17892 |
 Posted: Tue Jul 21, 2009 8:51 am |
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This is a Lincoln Idealarc 250 TIG AC/DC welder.
http://yabe.algebra.com/~ichudov/misc/ebay/Lincoln-Idealarc-250-AC-DC/Lincoln-TIG-250-Manual.pdf
After rewiring it from 460 to 230 volts, at first it seemed to work
great, as evidenced by stick welding.
However, further testing revealed that there is NO high frequency
output. I checked the spark gap and it is about what it should be,
which is .040. When HF is turned on, there is no arcing activity at
all in the spark gap and no characteristic noise.
I am, obviously, withdrawing my for sale offer until further notice.
Any ideas will be appreciated.
i |
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| Gunner Asch |
| Posted: Tue Jul 21, 2009 9:26 am |
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On Mon, 20 Jul 2009 23:51:15 -0500, Ignoramus17892
<ignoramus17892@NOSPAM.17892.invalid> wrote:
Quote: This is a Lincoln Idealarc 250 TIG AC/DC welder.
http://yabe.algebra.com/~ichudov/misc/ebay/Lincoln-Idealarc-250-AC-DC/Lincoln-TIG-250-Manual.pdf
After rewiring it from 460 to 230 volts, at first it seemed to work
great, as evidenced by stick welding.
However, further testing revealed that there is NO high frequency
output. I checked the spark gap and it is about what it should be,
which is .040. When HF is turned on, there is no arcing activity at
all in the spark gap and no characteristic noise.
I am, obviously, withdrawing my for sale offer until further notice.
Any ideas will be appreciated.
i
One assums you have done the following...
1. Set the machine to HF Constant
2. Checked your tig pedal to make sure its actualy fireing up the
circuit?
It should also start the gas flow.
see section 2.6 of the pdf
3. Check to see if you have HF on DC-, DC+ and AC
I have a Lincoln 300 that doesnt produce anything other than MAXIMUM
output at any setting, but only on DC- & DC+. AC works just fine.
Still dont know whats up with that...its in the To Do pile.
Check to make sure your HF is not grounded anywhere inside the case or
line
Gunner
"Lenin called them "useful idiots," those people living in
liberal democracies who by giving moral and material support
to a totalitarian ideology in effect were braiding the rope that
would hang them. Why people who enjoyed freedom and prosperity worked
passionately to destroy both is a fascinating question, one still with us
today. Now the useful idiots can be found in the chorus of appeasement,
reflexive anti-Americanism, and sentimental idealism trying to inhibit
the necessary responses to another freedom-hating ideology, radical Islam"
Bruce C. Thornton, a professor of Classics at American University of Cal State Fresno |
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| Winston |
| Posted: Tue Jul 21, 2009 9:57 am |
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Ignoramus17892 wrote:
Quote: This is a Lincoln Idealarc 250 TIG AC/DC welder.
http://yabe.algebra.com/~ichudov/misc/ebay/Lincoln-Idealarc-250-AC-DC/Lincoln-TIG-250-Manual.pdf
After rewiring it from 460 to 230 volts, at first it seemed to work
great, as evidenced by stick welding.
However, further testing revealed that there is NO high frequency
output. I checked the spark gap and it is about what it should be,
which is .040. When HF is turned on, there is no arcing activity at
all in the spark gap and no characteristic noise.
I am, obviously, withdrawing my for sale offer until further notice.
Any ideas will be appreciated.
Item 11 in the troubleshooting chart in Section 3.4?
--Winston |
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| John L. Weatherly |
| Posted: Tue Jul 21, 2009 5:00 pm |
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Ignoramus17892 wrote:
Quote: This is a Lincoln Idealarc 250 TIG AC/DC welder.
http://yabe.algebra.com/~ichudov/misc/ebay/Lincoln-Idealarc-250-AC-DC/Lincoln-TIG-250-Manual.pdf
After rewiring it from 460 to 230 volts, at first it seemed to work
great, as evidenced by stick welding.
However, further testing revealed that there is NO high frequency
output. I checked the spark gap and it is about what it should be,
which is .040. When HF is turned on, there is no arcing activity at
all in the spark gap and no characteristic noise.
I am, obviously, withdrawing my for sale offer until further notice.
Any ideas will be appreciated.
i
I have a Lincoln TIG 300/300. I had no HF & it ended up being the relay.
--
John L. Weatherly
Nashville, Tennessee
please remove XXXs to reply via email |
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| Grant |
| Posted: Tue Jul 21, 2009 5:48 pm |
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Ignoramus17892 wrote:
Quote: This is a Lincoln Idealarc 250 TIG AC/DC welder.
http://yabe.algebra.com/~ichudov/misc/ebay/Lincoln-Idealarc-250-AC-DC/Lincoln-TIG-250-Manual.pdf
After rewiring it from 460 to 230 volts, at first it seemed to work
great, as evidenced by stick welding.
However, further testing revealed that there is NO high frequency
output. I checked the spark gap and it is about what it should be,
which is .040. When HF is turned on, there is no arcing activity at
all in the spark gap and no characteristic noise.
I am, obviously, withdrawing my for sale offer until further notice.
Any ideas will be appreciated.
i
Start carefully tracing cables - it is possible that the HF leaked through a
crack in the insulation at some point and shorted to ground, and a new cable can
be a simple fix.
Grant |
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| Ignoramus19289 |
| Posted: Tue Jul 21, 2009 5:48 pm |
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On 2009-07-21, Grant <grantNOSPAM@kirkland.net> wrote:
Quote: Ignoramus17892 wrote:
This is a Lincoln Idealarc 250 TIG AC/DC welder.
http://yabe.algebra.com/~ichudov/misc/ebay/Lincoln-Idealarc-250-AC-DC/Lincoln-TIG-250-Manual.pdf
After rewiring it from 460 to 230 volts, at first it seemed to work
great, as evidenced by stick welding.
However, further testing revealed that there is NO high frequency
output. I checked the spark gap and it is about what it should be,
which is .040. When HF is turned on, there is no arcing activity at
all in the spark gap and no characteristic noise.
I am, obviously, withdrawing my for sale offer until further notice.
Any ideas will be appreciated.
i
Start carefully tracing cables - it is possible that the HF leaked through a
crack in the insulation at some point and shorted to ground, and a new cable can
be a simple fix.
If that was the case, I would still see sparks in the spark gap.
i |
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| Gunner Asch |
| Posted: Tue Jul 21, 2009 9:51 pm |
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On Tue, 21 Jul 2009 11:59:48 -0500, Ignoramus19289
<ignoramus19289@NOSPAM.19289.invalid> wrote:
Quote: On 2009-07-21, Grant <grantNOSPAM@kirkland.net> wrote:
Ignoramus17892 wrote:
This is a Lincoln Idealarc 250 TIG AC/DC welder.
http://yabe.algebra.com/~ichudov/misc/ebay/Lincoln-Idealarc-250-AC-DC/Lincoln-TIG-250-Manual.pdf
After rewiring it from 460 to 230 volts, at first it seemed to work
great, as evidenced by stick welding.
However, further testing revealed that there is NO high frequency
output. I checked the spark gap and it is about what it should be,
which is .040. When HF is turned on, there is no arcing activity at
all in the spark gap and no characteristic noise.
I am, obviously, withdrawing my for sale offer until further notice.
Any ideas will be appreciated.
i
Start carefully tracing cables - it is possible that the HF leaked through a
crack in the insulation at some point and shorted to ground, and a new cable can
be a simple fix.
If that was the case, I would still see sparks in the spark gap.
i
Looking at the schematic..yes indeed.
"Lenin called them "useful idiots," those people living in
liberal democracies who by giving moral and material support
to a totalitarian ideology in effect were braiding the rope that
would hang them. Why people who enjoyed freedom and prosperity worked
passionately to destroy both is a fascinating question, one still with us
today. Now the useful idiots can be found in the chorus of appeasement,
reflexive anti-Americanism, and sentimental idealism trying to inhibit
the necessary responses to another freedom-hating ideology, radical Islam"
Bruce C. Thornton, a professor of Classics at American University of Cal State Fresno |
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| Grant |
| Posted: Tue Jul 21, 2009 10:45 pm |
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Quote: If that was the case, I would still see sparks in the spark gap.
Not if the HF leaked out through a wire that was supplying the HF board,
you wouldn't.
Ernie had dead HF on his main ax, his Syncrowave 250DX. He started tearing it
apart to get some module out to take it to the welder repair, and discovered
that some wire was shorted to ground and as soon as he taped it, everything
worked again.
Or something like that. I couldn't find the reference.
Grant |
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| Ignoramus19289 |
| Posted: Tue Jul 21, 2009 11:30 pm |
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On 2009-07-21, Grant <grantNOSPAM@kirkland.net> wrote:
Quote:
If that was the case, I would still see sparks in the spark gap.
Not if the HF leaked out through a wire that was supplying the HF board,
you wouldn't.
Ernie had dead HF on his main ax, his Syncrowave 250DX. He started tearing it
apart to get some module out to take it to the welder repair, and discovered
that some wire was shorted to ground and as soon as he taped it, everything
worked again.
Or something like that. I couldn't find the reference.
I believe you. I will check everything in some sort of a methodical
fashion.
i |
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| Martin H. Eastburn |
| Posted: Wed Jul 22, 2009 6:25 am |
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Is the internal arc plate eaten up and it over-voltages...
Common issue on old ones so I hear.
Another idea.
Martin
Ignoramus19289 wrote:
Quote: On 2009-07-21, Grant <grantNOSPAM@kirkland.net> wrote:
If that was the case, I would still see sparks in the spark gap.
Not if the HF leaked out through a wire that was supplying the HF board,
you wouldn't.
Ernie had dead HF on his main ax, his Syncrowave 250DX. He started tearing it
apart to get some module out to take it to the welder repair, and discovered
that some wire was shorted to ground and as soon as he taped it, everything
worked again.
Or something like that. I couldn't find the reference.
I believe you. I will check everything in some sort of a methodical
fashion.
i |
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| Ignoramus30026 |
| Posted: Wed Jul 22, 2009 5:51 pm |
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On 2009-07-22, Martin H. Eastburn <lionslair@consolidated.net> wrote:
Quote: Is the internal arc plate eaten up and it over-voltages...
You mean the spark gap?
I will take the electrodes out to look.
i
Quote: Common issue on old ones so I hear.
Another idea.
Martin
Ignoramus19289 wrote:
On 2009-07-21, Grant <grantNOSPAM@kirkland.net> wrote:
If that was the case, I would still see sparks in the spark gap.
Not if the HF leaked out through a wire that was supplying the HF board,
you wouldn't.
Ernie had dead HF on his main ax, his Syncrowave 250DX. He started tearing it
apart to get some module out to take it to the welder repair, and discovered
that some wire was shorted to ground and as soon as he taped it, everything
worked again.
Or something like that. I couldn't find the reference.
I believe you. I will check everything in some sort of a methodical
fashion.
i |
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