Electronic guys need help please

[blueeyes]

Hi guy my decoy has given up the ghost , used it last week and it was fine , was going out sun put three sets of batteries in and just a hum , opened it up and checked and its not getting the full 6v , I took the diode out to check and seems ok , it has a rotary controller for speed and a switch which runs the motor or motor and led , the motor is fine tested it with 6v and its fine , be great if someone could point me in the right directions as must be something simple , the jack is for remote on via an aux socket on the caller thanks for lookin

 

[wully1234]

Probably the speed controller as DC motor speed is controlled by changing the voltage

 

[Liveonce]

Can also be done by pulse width modulation, just reducing the voltage, reduced the motor torque so not always a good idea.

Does the chip have any identifiable marking on it as to its type?

 

[wully1234]

Probably the speed controller as DC motor speed is controlled by changing the voltage

Mini DC Motor Speed Control Driver Board 3V-35V 5A PWM Controller / LED dimmer | eBay

PWM Duty Cycle: 1% -100%. PWM Frequency: 10KHz. or Lower range 3-15V (bridge two points shown in photo with blob of solder or small wire ).

www.ebay.co.uk

Cheap way to try if you can do without the auxiliary

 

[blueeyes]

Thanks for the input guys it works on a pulse so many seconds on and so many off and as I said I can switch it of remotely fae the caller with a stereo lead attached. I have had it some time but not had a lot of use and never been wet tks

 

[Liveonce]

likely a 555 type timer chip then.

Why not replace it with the likes of this, keeping the current motor and battery, if you can find a 6volt version, or get a 12v motor also. Wireless so no lead required.

https://www.amazon.co.uk/gp/product/B0BBPS3NMQ/ref=ox_sc_saved_title_1?smid=A9XFKGXODO5D2&psc=1

 

[blueeyes]

Here is the board from behind tks

 

[blueeyes]

likely a 555 type timer chip then.

Why not replace it with the likes of this, keeping the current motor and battery, if you can find a 6volt version, or get a 12v motor also. Wireless so no lead required.

https://www.amazon.co.uk/gp/product/B0BBPS3NMQ/ref=ox_sc_saved_title_1?smid=A9XFKGXODO5D2&psc=1

Thanks for that but I am bad enough with thermal, remote for caller, rifle sticks IR etc etc lol