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04-20-2014 06:24 PM  6 years ago
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BENTDABOOM

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west seattle

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GY 240 PROBLEMS
been having problems with a GY240 that was working fine up till couple days ago, heres whats going on>>>>>>>>>I had the gyro setup on the "gear invert mix switch on a 8103 so when the switch was up it worked in rate, down HH would kick in, its not doing that now nomatter where the switch is. also HH works when the Thold switch is on, turn it off and it goes back into rate.hoping someone can help figure this out , thanx
CAUTION!!! politicians may be hazerdous to your well being
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04-20-2014 07:05 PM  6 years ago
JEEPWORLD2002/2

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Blue Bell, Pa

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See u other post ??Trex600n,Trex500,MR25,MikadoLoGo5003d/KDE,Goblin 380XNova,CastleCreations,Ys,JR XG8,Tags Mini XBus Dmss//FAA# FA3NYC9TAP
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04-21-2014 01:47 AM  6 years ago
drdot

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So. California, Orange County.

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fwiw...

Near as I remember, the240 is rate only...Gotta go to 401 if you want HH.....

John.
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04-21-2014 01:52 AM  6 years ago
AirWolfRC

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42½ N, 83½ W

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Tower says it's heading hold

you just can't switch from the TX

http://www3.towerhobbies.com/cgi-bi...1P?I=LXVA42&P=8

I used a pair of them in some past experiments,

http://airwolfrc.com/NFB.html
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04-21-2014 02:02 AM  6 years ago
dcasole

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Dacula GA

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+1on what airwolf said. Its only a heading hold and not adjustable
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04-21-2014 02:11 AM  6 years ago
AirWolfRC

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42½ N, 83½ W

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There's a switch on the 240 that selects Rate or HH
Another switch to reverse operation
and a potentiometer to set gain.
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04-21-2014 04:01 AM  6 years ago
dkshema

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Cedar Rapids, IA

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been having problems with a GY240 that was working fine up till couple days ago, heres whats going on>>>>>>>>>I had the gyro setup on the "gear invert mix switch on a 8103 so when the switch was up it worked in rate, down HH would kick in, its not doing that now nomatter where the switch is. also HH works when the Thold switch is on, turn it off and it goes back into rate.hoping someone can help figure this out , thanx
Physically impossible with the GY240. Although it will operate as a Heading Hold gyro OR a Rate Mode gyro, there is NO WAY to make that happen from your transmitter/receiver.

You must physically change the position of a tiny toggle switch mounted on the GY240 itself.

There is no connection between the GY240 and any gain control channel of the receiver.
-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz
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04-21-2014 06:10 AM  6 years ago
BENTDABOOM

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west seattle

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yes yes yes Im aware of all this and think we solved the problem, but what still bothers me is why did the HH only work when the Thold was on Im thinking the answer is in my other recent post, cuzz it seems to be working right now.

I am seriously starting to think the 8103 Ive had now for several yrs has gone bad, infact I ask a question about that but didn't get any replys. thiers been a few times Ive programmed something went out to fly the next day and things were way out of wack! just like it got a mind of its own
CAUTION!!! politicians may be hazerdous to your well being
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04-21-2014 07:49 PM  6 years ago
dkshema

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Cedar Rapids, IA

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The 8103 has a coin-cell lithium battery inside to keep the various model memory settings from disappearing when power is off.

The battery, on average, has about a 7-year life in this application before it needs replacing. Your 8103 (and mine, too, by the way) is older than 7 years. Might be time for a new battery...if you want to keep the 8103 around for another decade.
-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz
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04-21-2014 08:08 PM  6 years ago
AirWolfRC

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The 8103 has a coin-cell lithium battery inside . . .
Yes . . . check it. That's what holds memory when the power switch is off.

But the GY240 is still not capable of changing modes from whatever the TX is doing.
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04-22-2014 12:45 AM  6 years ago
BENTDABOOM

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west seattle

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now I know for sure the TX is losing its memeory! just programmed some stuff into a new model everything was right, turned it back on and everything went screwy! its strange cuzz the aileron still works and goes the right way but the collective and elevator have switched by their selfs I know damn good and well everything was right after I set it up and didn't think I was going crazy Can you replace that memory battery or is that a factory job?CAUTION!!! politicians may be hazerdous to your well being
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04-22-2014 03:36 AM  6 years ago
Pistol Pete

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Seffner, FL

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Its replaceable and can be had locally. Its the bracket that holds battery in place that needs to be dealt with soldering wise.~~Enjoying the hobby one flight at a time~~
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04-22-2014 04:00 AM  6 years ago
dkshema

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Cedar Rapids, IA

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Coin cells with the proper spot-welded PC terminations are usually not run of the mill commodities you'd find at most local stores that sell batteries.

This battery can be had for between $1 and $2 (plus shipping) from places such as Mouser Electronics and Digi-Key.
-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz
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04-22-2014 04:56 AM  6 years ago
Pistol Pete

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Seffner, FL

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Amazon has them as well.

Search using...

CR 2032 with tabs
~~Enjoying the hobby one flight at a time~~
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04-22-2014 05:23 AM  6 years ago
dkshema

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Cedar Rapids, IA

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Just tried that search for fun. As far as I saw, none of the returned items would work in this application. None were drop-in replacements. Mouser had three different manufacturers available with two sources in stock. All direct replacements.-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz
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04-22-2014 02:53 PM  6 years ago
Pistol Pete

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Seffner, FL

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HERE

Place tape over buttons so that they stay in place.
Remove antenna, module and battery

Remove SIX screws from back cover
Lift back cover and flip over to the left
Gently wiggle cable from back cover off from circuit board. Do not pull by wires.

Battery will be under this circuit board on the right side
There is only one screw holding this board in place [upper middle]

As soon as you remove screw the board will be pushed up by springs.
These are the springs for the buttons you were supposed to tape first...now you know why.

This is the battery.

DYI RISK...
Bad news is that you risk loosing calibration if your soldering skills are lacking and or slow when replacing batt in original location.

Good news is that you dont have to place new batt in exact same location.

Solder a short length of black and red wire to the tabs of new battery. OBSERVE POLARITY. How short? Less than two inches should do.

Clean new battery from your fingers smudges and wrap it with double sided tape. Do not peel the tape yet. This is to protect batt as well as circuit board in the meantime.

Solder short wires from new batt to the old battery tabs that are sticking out from the busy side of circuit board. Again OBSERVE POLARITY.

The top tab looking at busy side of board (3rd photo)is the NEGATIVE tab that is between the marks "J13" and "J14" on the board.
I marked my board +/- for photo.

Once done, flip circuit board and "snip off" old battery via the tabs.

Patience is a must when reassembling given the eight springs.

Peel off protection from double sided tape on new batt and secure to the side of front case by old batt location.

Reverse assemble the rest and best of luck!

You can also entrust to someone with good soldering skills and patience.

Worst case scenario, you were thinking of replacing it anyways.
~~Enjoying the hobby one flight at a time~~
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04-22-2014 03:09 PM  6 years ago
AirWolfRC

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42½ N, 83½ W

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If you're handy, you might find an old PC motherboard and cannibalize the battery holder and solder it in. Then use a non-tab (standard) battery.
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04-22-2014 06:09 PM  6 years ago
BENTDABOOM

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west seattle

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thanx for your time pete and others that repliedCAUTION!!! politicians may be hazerdous to your well being
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04-22-2014 11:44 PM  6 years ago
dkshema

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Cedar Rapids, IA

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Bad news is that you risk loosing calibration if your soldering skills are lacking and or slow when replacing batt in original location.
Of course, you're replacing a battery that is to the point where it will no longer keep the model memory alive. I'd guess any calibration data that might be stored away is long gone, too.
-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz
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04-23-2014 02:08 AM  6 years ago
Pistol Pete

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Seffner, FL

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Indeed...unfortunately it will cost him around $5 to find out. Cheaper than a new or used radio either way.~~Enjoying the hobby one flight at a time~~
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