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Re: heng long tk 7.0 shutting down after firing
Posted: Thu Dec 21, 2023 8:13 pm
by tankme
There is one other thing you can do to troubleshoot. This is something we did in electronics school in the Army. If there was something so broke we couldn't figure out what the problem was, we would break a piece of equipment down into it's minimum configuration. If it worked that way, we would add parts back into the system until it failed. Once it failed, that was the bad part.
You could do this on a tank by disconnecting the smoke, the LEDs, the turret rotation, motors, the elevation, etc. Just make sure you LABEL or take a picture of all the connections BEFORE you start removing them...

Re: heng long tk 7.0 shutting down after firing
Posted: Sat Dec 23, 2023 3:28 am
by Herr Dr. Professor
The recoil could be shorting somehow. I had a similar problem years ago with a Taigen/Torro KV-2 tank. In my experience, this did not shut the tank down, but it did make the barrel stick in place and not recoil.
The recoil would not go in far enough to make contact with a micro switch. I carefully disasembledthe turret of the Taigen KV-2 and fiddled with the recoil by hand until it contacted the micro-switch. The problem has not recurred ever since. I certainly agree with tankme: "LABEL or take a picture of all the connections." For quite a while, I took pictures of each step as I disassembled Taigen/Torro tanks. It sure helps build confidence that one can get it back together again.

Re: heng long tk 7.0 shutting down after firing
Posted: Tue Jan 09, 2024 4:06 pm
by StuartWillis
Hi All, I thought i'd update this post.
After a bit of too'ing and frowning with the supplier they went me a new unit.
Guess what all works as expected now

Re: heng long tk 7.0 shutting down after firing
Posted: Tue Jan 09, 2024 4:15 pm
by Herr Dr. Professor
Yay! I am glad this came out well. Despite the limited sound choices, the HengLong TK7.0 is a nice control unit. Please keep us informed as you progress with your Abrams.
Re: heng long tk 7.0 shutting down after firing
Posted: Tue Jan 09, 2024 4:26 pm
by Son of a gun-ner
StuartWillis wrote: ↑Tue Jan 09, 2024 4:06 pm
Hi All, I thought i'd update this post.
After a bit of too'ing and frowning with the supplier they went me a new unit.
Guess what all works as expected now
That's awesome, thanks for updating this thread

Re: heng long tk 7.0 shutting down after firing
Posted: Sun Feb 04, 2024 8:34 pm
by linyubin
The issue with the motherboard is resolved by replacing it! Did you fire the gun and make modifications, adding smoke?
Re: heng long tk 7.0 shutting down after firing
Posted: Sun Feb 04, 2024 9:24 pm
by StuartWillis
linyubin wrote: ↑Sun Feb 04, 2024 8:34 pm
The issue with the motherboard is resolved by replacing it! Did you fire the gun and make modifications, adding smoke?
I did not make any modifercations it just works as expedted after the new unit was installed, smoke etc all works.
Re: heng long tk 7.0 shutting down after firing
Posted: Sat Mar 09, 2024 3:28 pm
by linyubin
I found that the engine stalling on my end is all due to issues with the motherboard! Just repair it