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Old 04-29-2018, 04:25 PM   #1
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Default Problems with a fluke 902 erreatic resistance readings

Hello, i have a problem with a fluke 902 clamp meter. I bought it as a project and its fairly beat up. So basicly when i got it the switch worked but was obviously super dirty and making erroneous connections to diffrent parts of the meter. (When set to ohms, it thought it was on amps and etc). So after dissemble, cleaning the pot/switch. Got ever thing working right. (Pencil eraser and electrical cleaner). I still have one problem. The ohms meter is erratic and constantly show crazy ohms reading of 1500+ then comes down to 16 ohm in about a minute. Some time it accends as well. Now. It did find two more problems. Two wires came un saudered, but no changes when i connect them to the board. (Unsaudered). Im going to resauder them tonight, but can anyone think of any other reason the ohms would go crazy like that? Just point me in the right direction plz.

Thanks guys.
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Old 04-29-2018, 04:33 PM   #2
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You can ask this question at http://www.diychatroom.com/ . This forum is for professionals only.
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Old 04-29-2018, 05:12 PM   #3
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Life's lesson: Don't buy second hand test equipment unless it's from a specialist dealer of second hand test equipment.
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Old 04-29-2018, 05:42 PM   #4
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So far know one knows? And i took your advice and posted on diy forums
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Old 04-29-2018, 05:55 PM   #5
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So far know one knows? And i took your advice and posted on diy forums
Good idea.

You might also want to google around for a forum on test equipment. I'm unaware of one, but it seems like there's a forum for everything.

Most of the people on this site are electricians in one form or another. When we have a meter go bad we generally either toss it in the bin or send it back to Fluke for repair. Electrician's don't (generally) fuss around with fixing things at the component level.
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Old 04-29-2018, 07:28 PM   #6
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Although I don't like it, I can make due with some halfass tools if necessary, but I won't tolerate test equipment I have to second guess.

That said, did you get a new set of Fluke leads?
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Old 04-29-2018, 10:00 PM   #7
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Quote:
Originally Posted by Jbailey6168 View Post
Hello, i have a problem with a fluke 902 clamp meter. I bought it as a project and its fairly beat up. So basicly when i got it the switch worked but was obviously super dirty and making erroneous connections to diffrent parts of the meter. (When set to ohms, it thought it was on amps and etc). So after dissemble, cleaning the pot/switch. Got ever thing working right. (Pencil eraser and electrical cleaner). I still have one problem. The ohms meter is erratic and constantly show crazy ohms reading of 1500+ then comes down to 16 ohm in about a minute. Some time it accends as well. Now. It did find two more problems. Two wires came un saudered, but no changes when i connect them to the board. (Unsaudered). Im going to resauder them tonight, but can anyone think of any other reason the ohms would go crazy like that? Just point me in the right direction plz.

Thanks guys.

Ihaad thuh same prublem to on time with thu same meeter u had an all i did was sulder all conetions that wuz un the meter but it still wuz crazy but i unsluldered one of them and then did it again and sumtimes it was still erratic but it wuz accending well so i figgered it wuz ok.

That werked for me hope it werks for you too and if you can raed all this cuz this site is making red lines undr all the words but i dont no why ??
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Old 04-30-2018, 01:34 AM   #8
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Yu chood puts a new batry in it's. That fix'd what wuz mine.
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Old 04-30-2018, 03:00 AM   #9
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Thanks for all the replys guys. Well it does it with out the leads in. I did resauder the connections today...same results. But i have not tried brand new batterys although the battery light does not come on for replacment. Ill try it tomorrow and report back
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