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  #11  
Old October 24th, 2013
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Originally Posted by NKaumans View Post
Not sure if this has already been addressed but my Max will not stay powered on with a AC to DC converter. I tried two of them and both say low voltage powering down. I plugged in my 8500 and voltage is reading right above 13, it sure of the problem
As long as your Max does not display low voltage and shutdown in your car then it is fine. Your AC to DC converter cannot meet Max's power demands.
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  #12  
Old April 13th, 2014
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Damn, I guess I should have known with the name like MAX it only wants the best juice. She plugs into and powers fine from a Jump Pack kit 12V DC. (Always ensuring the setting is on USB only < 2.1 amps, and not Jump Start + USB). I don't want any surges.. Although direct wire installation get's exposed to that, but it does have a inline fuse.
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  #13  
Old April 13th, 2014
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Quote:
Originally Posted by poolmon View Post
I use a Micronta 120 VAC to 12 VDC power converter to update my original 9500ix (that needs 12v to update). It outputs 13.8 VDC-1.75 AMPS.

This power supply also works fine with my MAX as far as keeping it powered up and checking/changing Preferences.
Could it be your supply has insufficient AMPS to power the MAX?
In my opinion you nailed it poolmon.
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  #14  
Old April 13th, 2014
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Quote:
Originally Posted by NKaumans View Post
Damn, I guess I should have known with the name like MAX it only wants the best juice. She plugs into and powers fine from a Jump Pack kit 12V DC. (Always ensuring the setting is on USB only < 2.1 amps, and not Jump Start + USB). I don't want any surges.. Although direct wire installation get's exposed to that, but it does have a inline fuse.
This sounds very much like a "low" voltage (or more specifically VxA,.. Wattage) issue to be honest. USB is a standard 5 volts.. (With a tolerance of + or - .25v). If I had to guess the unit wants more power.

There are many ways you could experiment with this..

I would probably hard wire a 5amp fuse inline with a random USB connector I have in my "parts bin" and run that from your AC to DC (on higher setting) to the Passport max.

The Passport max utilizes your cars accessory (cig. lighter) receptacle which is of course running at the battery voltage (about 12.x volts car off.. and 14.x volts car on with alternator running).

This outlet is generally running 15-20 amps in the car.. so you really don't have to be quite so sensitive about power and the passport max very likely wants a little more amperage .. remember at 2amps you are only giving it 24 watts at best ..

But, these are expensive detectors, so may just be best to get a more suitable AC-DC convertor with a little more power amp wise.


Mind if I ask what you are using this for off AC power?

Good luck,
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  #15  
Old April 14th, 2014
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Passport Max uses a little more than 1A at most. Our power cord fuses are all 2A so a 12VDC 2A supply is more than enough to power it.
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  #16  
Old April 15th, 2014
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Originally Posted by EscortRadar View Post
Passport Max uses a little more than 1A at most. Our power cord fuses are all 2A so a 12VDC 2A supply is more than enough to power it.
Good to know.

Then it makes no sense why his AC to DC wouldn't power the Passport without issue. Shrug.

I forgot to say the first thing I would have done is put a multimeter to your output to see exactly what Voltage/amperage et al it is putting out to get an idea of if there is problem.

It could be throwing wildly low power on this <2 amp setting.. Or be unstable power.

I do wish I had a AC to DC accessory port that plugs into the wall as I've had to tinker with this Passport max so much and can only do it in the car at the moment. Hate to buy one just for that purpose though.

Let us know how you get on.
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  #17  
Old April 15th, 2014
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Originally Posted by Chromatic View Post
I do wish I had a AC to DC accessory port that plugs into the wall as I've had to tinker with this Passport max so much and can only do it in the car at the moment. Hate to buy one just for that purpose though.
We sell them in the Detector Accessories/Radar Detector Adapters section of our website, $19.95 plus S/H
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  #18  
Old September 6th, 2017
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old thread but i just did this with my new max 360, i changed the cord & it worked !!
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