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HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › 9Z with a lipo battery / synthesized module getting hot
02-09-2006 12:15 AM  12 years agoPost 1
bperry

rrApprentice

Detroit, where we eat the dead

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I was wondering if anyone was using a 3S1P for there 9z?

If you are do you have the synthesized module?

If you do does it get hot? I measured the temp of mine at
99 degrees?

Also what is the voltage read on Tx? Mine is 12.2V.

I don't know if this is wise or safe to do, I think I am going to go with the Nimh batteries off of hangtimes.com

I will check if my uncle's 9z module gets hot tonight. He has a stock battery.

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02-09-2006 04:57 AM  12 years agoPost 2
Jerry Sudimick

rrVeteran

Connecticut

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While conducting this heat test - do you have the transmitter antennae extended at least one segment?

If you leave the antennae collapsed and transmit, the module will get very hot. You can actually destroy it by doing this.

This is from Futaba's FAQ on the 9Z series located at

http://www.futaba-rc.com/faq/faq-8u-q243.html
When I am using my radio for programming, setup within my house, experimenting, etc, is there anything special I should do?

You should ALWAYS extend your antenna at least the bottom or first segment when turning the radio on with a module in place. The 9Z's synthesized module, FSS, is particularly sensitive to this. If left in the radio with the radio on at your work area with the antenna collapsed for more than short intervals, the FSS will be unnecessarily exposed and may shorten the life or even immediately damage the FSS module.
If you are extending it, then I have no idea about voltage's influence on your issue. Just thought I'd throw this out there.

Jerry

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02-09-2006 05:17 AM  12 years agoPost 3
bperry

rrApprentice

Detroit, where we eat the dead

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I have always put the first extension of the antenna up while using the radio. I read on here that some fried there module forgetting to do that with the lips so I figured that I would extend the antenna out three sections while using. It seems to take a half hour to get up to temp. It is at 95.5 degrees and 11.6V. I am measuring the temp with a raytek infrared thermometer.

It funny I thought the voltage would stay higher for a longer period of time the radio timer is at 1:46 min and the voltage has dropped from 12.2V down to 11.6V. I think that the higher voltage is extra wear and tear on the Tx or at least the module. Comparing the heat on my uncle's 9z tonight his seemed cooler. Although his batteries were low only 9.3V and I only let the Tx on for about 20 min.

I will be able to check it out better tomorrow as the batteries will be charged, and I will have my Raytek gun. Maybe this is not a problem but I would hate to find out the hard way. The other thing I thought of was soldering a resistor into the circuit board so it could only put out so much voltage.

Anyone with more knowledge on this stuff please fell free to chime in and tell me what you think.

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