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 Post subject: Hickock 600A Meter Repair
PostPosted: Nov Sun 09, 2008 6:55 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 265
Location: Beverly Hills, CA, USA
Anybody out there that repairs these meters, or knows someone that does?

Omer


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 Post subject:
PostPosted: Nov Sun 09, 2008 7:33 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 289
Location: Staten Island,NY
Try www.alltubetesters.com


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 Post subject:
PostPosted: Nov Sun 09, 2008 9:40 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 265
Location: Beverly Hills, CA, USA
It seems like he wants to sell a new meter for $175.00. Is there anybody out there that fixes meters?


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 Post subject:
PostPosted: Nov Sun 09, 2008 9:47 am 
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Joined: Oct Sun 26, 2008 6:06 am
Posts: 35
Try Ram for meter repairs. They have good prices.

http://www.rammeter.com/index.cfm

Charlie


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 Post subject:
PostPosted: Nov Sun 09, 2008 9:53 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 265
Location: Beverly Hills, CA, USA
I'll call them Monday.

thank you

Omer


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 Post subject:
PostPosted: Nov Sun 09, 2008 2:41 pm 
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Joined: Oct Sun 15, 2006 12:57 pm
Posts: 3794
Don't know these guys but they came from a recomendation here on ARF, I believe.

http://www.metershop.com/

Mike


Last edited by Mikeinkcmo on Nov Mon 10, 2008 1:27 pm, edited 1 time in total.

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 Post subject:
PostPosted: Nov Sun 09, 2008 9:13 pm 
Member

Joined: Jul Fri 04, 2008 6:51 pm
Posts: 875
Location: Fall Creek, Oregon 97438
You might want to try Fred Scoles a fellow ARF forum member. He is very knowledgeable and might be willing to help you.

Chris


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 Post subject:
PostPosted: Nov Sun 09, 2008 9:41 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 265
Location: Beverly Hills, CA, USA
How do I contact him?

Omer


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 Post subject:
PostPosted: Nov Mon 10, 2008 1:43 am 
Member

Joined: Nov Mon 10, 2008 1:33 am
Posts: 165
Location: MinneSNOWta
What specifically is wrong with your meter that you need to have it repaired??? I cant imagine that meter repair is cheap either and when your done you still have a 50+ year old meter of unknown calibration.

My Understanding is that the main problem with these meters is that the Magnet structure gets weak with time causing the sensitivity to drop. Now, I don't know if that is accurate information or sales pitch.

from my own experience with Hickok meters, I have seen the upper spring/needle assembly have the glue come loose from the coil movement, flakes of coating come off and stick to the magnet and pole pieces, the spool resistor go open. the contact from the lead in wires through the spring pivots to the coil open up. and a bunch of other problems.

I am on my 5th Hickok and all have had bad meters thus far! very frustrating. and Roger Kennedy seems to be the only game in town for new meters.

He has a way of re energizing the magnets but its $95 to have done and says there is an 80% failure rate. so thats hardly worth it.

and $175 for a new meter seems really expensive. But I imagine that having a meter company custom make meters to your spec is not a cheap thing to do and a limited sales item also.

I am currently looking into how to build a regulated Microamp current source for testing the FS of meters as such. if anyone has suggestions or idea on how to do that. I'm all ears!



Zc


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 Post subject:
PostPosted: Nov Mon 10, 2008 5:59 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 522
Location: Stafford, Texas USA
LA has 4 or 5 meter shops. The last time I was in LA I used this one.

http://www.metersales.com/

All meter shops can re energizing the magnets, $95 is way too much. Now days most shops will put in a new Meter Movements.

http://www.hoytmeter.com/products/produ ... cat1id=165


Jimmie


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 Post subject:
PostPosted: Nov Tue 11, 2008 10:25 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 265
Location: Beverly Hills, CA, USA
Found the solution!

Use a, Simpson 100 uA taut band meter movement.

Scan the original meter face and reduce 66% to fit the
new meter face.

Put a 125 ohm resistor across the meter movement and a
130 ohm resistor in series with it.

500 uA full scale and 230 Ohm series resistance total.

Presto, a working Hickok tube tester, with a precision, better than the original, panel meter!

Omer


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 Post subject:
PostPosted: Nov Fri 14, 2008 7:53 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 3833
Location: Malone, New York USA
Good ol' Jeff Angus!
He hits yet another one outta th' ball park!
Ohms law is good.


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 Post subject:
PostPosted: Nov Fri 14, 2008 9:46 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 265
Location: Beverly Hills, CA, USA
Hi Dennis!

Jeff originally wanted to go digital display on this unit, but all the displays available are 200mV.

I proceeded to communicate with a few meter shops, but they said the original meter would take more than five hours to repair, and there would be no guarantee.

Placing a new movement in the old meter is not possible, because it would give false readings.

These were all things told to to me when I started to call around.

Being that Jeff has extra meters, he found one identical to the one that Alltubetesters.com sells for $175.00.

On a whim, he photoshopped the meter artwork and placed it over the Simpson meter scale. He then went a head and added resistors.

I believe this is what Alltubetesters.com does too for their replacement meters.

Nothing, like a little teamwork to solve a problem?!

Right Dennis?!


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 Post subject:
PostPosted: Nov Sat 15, 2008 5:21 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 3833
Location: Malone, New York USA
Omer wrote:
Found the solution!

Use a, Simpson 100 uA taut band meter movement.

Scan the original meter face and reduce 66% to fit the
new meter face.

Put a 125 ohm resistor across the meter movement and a
130 ohm resistor in series with it.

500 uA full scale and 230 Ohm series resistance total.

Presto, a working Hickok tube tester, with a precision, better than the original, panel meter!

Omer


Omer wrote:
Nothing, like a little teamwork to solve a problem?!

Right Dennis?!


You bet, Omer, as long as credit is shown where credit is due.
Right, Omer?


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