Tak2001
commented
2 years ago -Story about T238 DTU V2.0 Blie Tooth MOSFET current problem when you installed into APS SilverEdge gear box and very simple and effective solution.-
T238 DTU’s optical fire selector position sensor tend to having the serious problem with APS Silver Edge gear box.
That is it came with “paper sticker” that should be applied on the selector plate.
you have to find ”the best position” that both “Safe” and “Full auto” can be recognized by the optic sensor.
But even you found the best spot, it can be drifted to lose either “safe”or “fullauto” next day or after shooting few thousand rounds.
APS’s selector plate’s is rather smaller to cover both….
The first idea I got was moving the pivot point of the selector disk extra 1.5mm far from the center of the disk… It will give the extra 3mm sliding of selector plate but selector lever will be heavier…
Then in this afternoon, I came up the better and easy solution to give the “semi auto sensor”the “horse Blinder” to not let it receive the reflected light signals when the selector plate is at the “safe position”
I used none conductive natural rubber made thin adhesive tape (about 1.3mm thickness )
Now I got both “ safe” and “full auto” without any hustles…
If you have same problem with your optical sensor DTU, I highly recommend you to do so….
Hi, I had installed successfully into my APS M4A1 2 days ago. It was working perfect last 2 days. However in this morning, I had realised one of optic sensor for the firing mode (semi-auto sensor) can not be turn off. DTU sensor monitor in apps also showing it can not turn off and always on, except disconnect the battery and reconnect again. So removed the unit from the gear box and tested again and acting same as even no paper on the selector plate on the top of the optic sensor, it is always on. The full fire sensor is working fine…. it means, is sensor itself was broken in 2 days? Because of this, I can not select “safe”at all and I am not allowed to take this to the local game fields as “safe mode “is not working. Please help!
Set the unit back to factory default and install it back to gun but still situation is same… This is only 3 days old… should not be broken in such a short time…