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 Post subject: multimeter break down
PostPosted: Fri Jun 08, 2007 6:44 am 
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Friend
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Joined: Thu May 31, 2007 2:39 pm
Posts: 14
Location: w-europe
I installed a larger, higher voltage in my sIII kind of amp.
It sounds better, better cleans, more alive.

I clipped my digital multimeter to the ground and to pin7 on an el84 before I put it on. (multim on 1000Vdc)
When I applied voltage, the voltage rose to 337V,
then I lost myself in playing guitar with a big smile on my face.

When I looked again, the meter said 1.
I quickly switched the amp off.
The meter now stays on 1. whatever I do, tried a new battery, ...
It has probably broken down, there's no sign of burned components inside.
This is a good excuse to buy myself a new and better one.

But what did I do wrong ? Can't you connect it before switchin on because of spikes ?
Or is it more likely that it just had to break down sometime ?


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 Post subject:
PostPosted: Fri Jun 08, 2007 7:40 am 
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Holy Ghost
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Joined: Sun Mar 13, 2005 4:10 pm
Posts: 7519
Location: Canada
1. Is there an internal fuse you can check?
2. Try a new battery
3. Usually when they beak down you see nothing on the display
4. Its unlikely hi voltage caused it. I cant see a spike going over 1000V
5. You should be able to hook it up before power is applied. On the DC side,there is filtering/smoothing
6. Maybe it's time! :)

Indeally, B+ should be around 350V BTW.

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 Post subject:
PostPosted: Fri Jun 08, 2007 8:21 pm 
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Joined: Thu May 17, 2007 9:18 pm
Posts: 61
Ward,
I agree with coco here check for an internal fuse also another thing to try is to replace the battery I have seen meters act this way with an old battery. as far as meters go you really do get what you pay for.. I have a few meters laying around but my favorite is my Fluke 179


Bill

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 Post subject:
PostPosted: Sat Jun 09, 2007 7:43 pm 
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Joined: Tue Sep 19, 2006 11:46 am
Posts: 1078
Location: PA
just had to replace mine. Doin' the same thing. It was the battery.
Later


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 Post subject:
PostPosted: Sun Jun 10, 2007 8:21 am 
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Joined: Thu May 31, 2007 2:39 pm
Posts: 14
Location: w-europe
Bwah, it was an 'el cheapo.
I bought myself a new one and wont look back.
Thanks


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 Post subject:
PostPosted: Sun Jun 10, 2007 4:04 pm 
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Joined: Tue Sep 19, 2006 11:46 am
Posts: 1078
Location: PA
What did you get?


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PostPosted: Mon Aug 26, 2019 2:05 am 
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Joined: Mon Aug 26, 2019 2:02 am
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I also encounter with similar issue. I hope I can resolve it.


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PostPosted: Mon Aug 26, 2019 4:14 pm 
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Joined: Wed Sep 12, 2018 5:17 pm
Posts: 374
Location: Shawnee, OK
Myself, when I needed a replacement, I got an Amprobe 560 (owned by Fluke) to replace my old Craftsman. Couldn't go the Fluke price, wish I could, though. I just recently had to change the battery,figured out after reading manual... :oops: again. It has low battery icon AND beep to notify you, also beeps if leads are incorrectly plugged in for the testing function you set! Pretty nice for the price.

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