Old lincoln buzzbox quit

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mikechoochoo
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Joined: Mon Jan 13, 2003 6:37 pm

Old lincoln buzzbox quit

Post by mikechoochoo » Fri Jun 26, 2020 10:48 am

I bought this welder new about 30 years ago. I was welding, finished a bead and stopped to reposition the part. When I went to continue in was dead, no spark. The fan runs so I know I have power. I opened it up and everything looks good, no bad smells of burnt areas. I used an ohm meter and there are no open windings, I checked the primary with the fan disconnected and checked all the secondary's and checked for shorts to ground. Have any of you heard of fixing these, and how to find the problem ?
Mike.

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10KPete
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Location: Nordland, WA, USA

Re: Old lincoln buzzbox quit

Post by 10KPete » Fri Jun 26, 2020 5:56 pm

I had one of those for about 30 years also. A friend now has had it for 10 years. Still going strong!
They are really simple and what you've done should have found the problem. However, I think that fan is 120 VAC and if so it takes it's power from only one leg of the 220 to the neutral. If you've lost the other leg you'd still get the fan. Measure the power in.....

Resistance measurements are OK but nothing will substitute for voltage measurements.

Pete
Just tryin'

STRR
Posts: 378
Joined: Thu May 24, 2007 9:01 pm
Location: Westminster, CO

Re: Old lincoln buzzbox quit

Post by STRR » Fri Jun 26, 2020 6:37 pm

Mike,

If you can, take a voltmeter and check for voltage between the welding lead plug-in sockets (if you have plug-in leads). This should tell you if your primary side is working. You may be having trouble with your leads and/or stinger and ground clamp. Loose or corroded or just plain dirty. If you have voltage at your lead plug-ins, then check between the stinger and ground clamp.

I hope this helps.

Good Luck,
Terry

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NP317
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Location: Northern Oregon

Re: Old lincoln buzzbox quit

Post by NP317 » Fri Jun 26, 2020 9:38 pm

Fuses?
Continuity of the electrode cables?
'Just thinking of the simplest things first.
RussN

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SteveM
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Location: Connecticut

Re: Old lincoln buzzbox quit

Post by SteveM » Mon Jun 29, 2020 10:00 am

NP317 wrote:
Fri Jun 26, 2020 9:38 pm
Fuses?
Continuity of the electrode cables?
'Just thinking of the simplest things first.
RussN
My brother said that when you are trying to fix something, start with the simple things, even if they not the most likely.

Steve

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NP317
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Joined: Tue Jun 24, 2014 2:57 pm
Location: Northern Oregon

Re: Old lincoln buzzbox quit

Post by NP317 » Mon Jun 29, 2020 10:12 am

I worked for several years as an electronic technician on medical equipment.
Quickly learned to ALWAYS check the simple things first.
RussN

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BigDumbDinosaur
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Joined: Tue Jun 28, 2011 9:19 pm
Location: Midwestern United States

Re: Old lincoln buzzbox quit

Post by BigDumbDinosaur » Mon Jun 29, 2020 11:24 am

mikechoochoo wrote:
Fri Jun 26, 2020 10:48 am
I bought this welder new about 30 years ago. I was welding, finished a bead and stopped to reposition the part. When I went to continue in was dead, no spark. The fan runs so I know I have power. I opened it up and everything looks good, no bad smells of burnt areas. I used an ohm meter and there are no open windings, I checked the primary with the fan disconnected and checked all the secondary's and checked for shorts to ground. Have any of you heard of fixing these, and how to find the problem ?
Mike.
The heat selector switch is known to go bad with age. It's relatively simple to remove and examine.
—————————————————————————————————
I'm an old guy. What's your excuse? ☻

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liveaboard
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Re: Old lincoln buzzbox quit

Post by liveaboard » Mon Jun 29, 2020 6:11 pm

It's a very simple electrical circuit; take your voltmeter and follow the power until it stops.
There's your fault.

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NP317
Posts: 2361
Joined: Tue Jun 24, 2014 2:57 pm
Location: Northern Oregon

Re: Old lincoln buzzbox quit

Post by NP317 » Mon Jun 29, 2020 7:23 pm

liveaboard wrote:
Mon Jun 29, 2020 6:11 pm
[snip]
... your fault.
Funny.
RussN

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