DX7 fail-safe
10-29-2011 | 09:10 PM
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From: LOMA LINDA,
CA
DX7 fail-safe
I put the plane out and taxied out and the plane suddenly went full throttle to the other side of the runway and flipped over. Plane went into fail-safe and stupid me forgot to re-Bind after reversing the throttle. Couple weeks later, after flying it for a few times with the fail-safe set, I lost total control of the plane - luckly I was just taxing the plane. Again, the plane went into fail safe mode. Thinking it was a bad receiver I did not fly the plane for a couple weeks. During that time I have been flying other planes with no glitch. Today, I decided to fly my helicopter after a few month in storage and after testing everything and bringing the heli to the pad I lost control of the helicopter. It went into fail safe mode. I pulled out a plane I was flying earlier that morning thinking - could it be my radio. turned on the tx and the rx on the plane and nothing abnormal happened. repeated that a couple times and on the 5th or 7th time the plane went into fail safe mode on the bench. I tried it on the helicopter and again after a few on / off tries it happened again on the heli. the fail safe mode doesn't happen suddenly - I have full control for a few minutes and then it happens. I checked the Transmitter LCD and it is on. no power loss on the LCD. Later that evening I opened the TX case and the antenna is securely connected. don't see any chaffing of the wires inside.
Could my DX7 be going bad?
I have a Lipo TX battery - fully charged
Could my DX7 be going bad?
I have a Lipo TX battery - fully charged
10-30-2011 | 12:18 PM
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From: Poolesville, MD
RE: DX7 fail-safe
Check the connectors.
I had this happen after the small pins in the TX were bent due to frequent removal for LiPo charging.
The problem was not with the LiPo itself but with the momentary disconnects from power.
I ended up going back to NiMH on one TX just to avoid removing the LiPo pack.
On a TX I cared less about I rigged the balance connector to be accessible with the cover in place, so as not to move the pack.
That way I can charge the LiPo with the pack in place... though this is not the best way of doing things...
I had this happen after the small pins in the TX were bent due to frequent removal for LiPo charging.
The problem was not with the LiPo itself but with the momentary disconnects from power.
I ended up going back to NiMH on one TX just to avoid removing the LiPo pack.
On a TX I cared less about I rigged the balance connector to be accessible with the cover in place, so as not to move the pack.
That way I can charge the LiPo with the pack in place... though this is not the best way of doing things...
