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AMX 4 problem

Marvin Morales

AMX 4 problem

April 07, 2009 11:54

Im having a problem with an amx 4, when I plug in the unit the display star flickering and when I try to turn it on a relay in the charger board starts activating and doesnt stop. any Help?

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Samuel Sandlin

Re: AMX 4 problem

April 07, 2009 12:45

On the charger board you will see 2 large plug in type relays. One has a AC voltage coil, the other relay has a coil voltage of 120 volts DC. That DC coil relay has contacts that likes to stick and cause problems. Order a new 120 volt DC relay. The 2 relays are next to each other and are on the lower right corner of the charger board. Good luck, sam@amxrayservice.com

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Chris Baklik

Re: AMX 4 problem

April 07, 2009 04:52

I have the service manual if needed

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Marvin Morales

Re: AMX 4 problem

April 07, 2009 07:14

The charger board is new. Tech support tells me that the cpu is bad something about u283. thanks for the response.

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joe scroggs

Re: AMX 4 problem

April 08, 2009 09:21

The CPU maybe the problem. First check the F4 and F5 fuses below the charger. Relay chattering and possibly the display flickering could be happening if on of them is bad.
joes@mobilexraysolutions.com

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Marvin Morales

Re: AMX 4 problem

April 09, 2009 04:41

Thanks for the help.
final problem were the battery voltage to low. at 48vdc and it needs a minimum of 70vdc fot the power supply

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