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Arri 35-3 problem


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#1 andres victorero

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Posted 31 July 2007 - 10:04 AM

Hi i just received a arri 35-3 (I think first generation) purchased from ebay.

The camera looks good but it doesn´t work. I replace the 15A fuse but don´t work (the fuse work)
I plug a standard 12v. 4Ah battery with XLR4 plug. I´m not familiar with this cam but I think that it uses standard XLR4 batteries.

I´m afraid about to purchase a "beautiful anchor" what do you think about this problem?

Do you can recommend me a good company in Europe for repair and overhaul?

Thanks

Edited by andres victorero, 31 July 2007 - 10:08 AM.

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#2 John Sprung

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Posted 31 July 2007 - 01:31 PM

Hi i just received a arri 35-3 (I think first generation) purchased from ebay.

The camera looks good but it doesn´t work. I replace the 15A fuse but don´t work (the fuse work)
I plug a standard 12v. 4Ah battery with XLR4 plug. I´m not familiar with this cam but I think that it uses standard XLR4 batteries.

I´m afraid about to purchase a "beautiful anchor" what do you think about this problem?

Do you can recommend me a good company in Europe for repair and overhaul?

Thanks

First, unplug the power cable from the camera, and check with a volt meter that you have 12 volts between pins 1 and 4 (the two farthest apart).



-- J.S.
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#3 andres victorero

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Posted 31 July 2007 - 03:26 PM

thanks but the battery woks well (13 volts) It runs normally my LTR7, any other advice?

where can I send the camera for repair (europe) ? :(
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#4 John Sprung

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Posted 31 July 2007 - 07:56 PM

thanks but the battery woks well (13 volts) It runs normally my LTR7, any other advice?

It depends on how confident you are in your ability to do this, but if it were mine, I'd see what I could take apart on the motor. The hopeful fact is that a motor that won't run at all is often a very simple and inexpensive repair -- a broken wire or switch or some such thing. A motor that still runs, but poorly, is often more expensive.

Look for a camera rental company near you. They have to maintain their own equipment, and may also do repairs. Even if they don't advertise repair service, ask them. If they don't want the money, perhaps they can recommend someone else.



-- J.S.
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#5 Tony Brown

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Posted 01 August 2007 - 05:56 PM

There are two fuses on the arri 3. The one at the top by the 24/25 switch and the main fuse. Take off the right hand side cover... the fuse is obvious. It usually blows when plugging in or unplugging the high speed control or reversing plug while the camera is still connected to the battery. NEVER do this.

Arri Munich or Movietech in London would sort it. But try the main fuse first
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#6 Thibaut de Chemellier

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Posted 13 August 2007 - 02:59 PM

Hi,
This trick worked with mine : turn the brown knurled disk with your finger to help the motor starting...be carefull not to let one of your finger in the mechanism....
After a small cleaning your camera should run without problems for a long time.
Good luck.
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#7 Robert Skates

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Posted 14 August 2007 - 04:48 AM

Hello,
This may sound crazy. Take a voltage meter/tester, touch the negative to something metal, not attached to the camera. Take the positive touch it to various points all along the dumb side of the camera. Arri III's have been known to develop shorts. I've seen this happen to more than one 35 III over the years.
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#8 Hal Smith

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Posted 14 August 2007 - 09:05 AM

The camera looks good but it doesn´t work. I replace the 15A fuse but don´t work (the fuse work)
I plug a standard 12v. 4Ah battery with XLR4 plug. I´m not familiar with this cam but I think that it uses standard XLR4 batteries.


Cut and Pasted from a current thread on cml-ac. This might be of some help.

>trying to determine a power/electronic problem with an Arri 35-III.
the camera motor turns on at high speed when the 12->11pin power cable is
plugged in from the Sony XC-77 video tap to the body. This is without the
old style (Arri?) speed base attached.

This is my first post, so by way of introduction, I live in NZ and make
part of my income from looking after the electronics of cameras.

The body of a 35-III is electrically isolated from the battery power
circuit. The transistor (T1 BD249) that directly controls the motor current
is mounted to the body for heat sinking, but insulated from it by an
insulating washer & insulating bush around the screw. If this insulation
should fail, the camera will run quite normally so long as the camera is
not connected to anything else. However, most video assist cameras connect
the power -ve to their body. When they are mounted on the Arri that also
connects the Arri body to -ve. If the above insulation has failed that will
then allow the motor current to bypass the transistor and the motor will
run at high speed. As a preliminary test, with the camera not connected to
anything else, unscrew the 6 pin motor plug. Using an ohmmeter, check
whether there is any continuity between pin 4 and bare metal on the body.
Then check pin 3 to the body. There should be no current path for either pin.

I'm not familiar with an Arri base so can't offer any help there.
Hope this helps.
Regards
Malcolm Moore.
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