Post History
I have here an acre-counter or crop counter device like the lykketronic shown below, using two AA batteries. It arrived without working. Upon opening its case, I found that the PCB is missing tw...
#4: Post edited
by
Nick Alexeev
·
2024-04-06T16:08:35Z (11 months ago)
#3: Post edited
by
Conrado
·
2024-04-03T14:34:49Z (11 months ago)
- I have here an acre-counter or crop counter device like the lykketronic shown below, using two AA batteries. It arrived without working.
- 
- Upon opening its case, I found that the PCB is missing two components, and the area where these components were is scratched, as though someone removed them carelessly.
- Here is a photograph of the main PCB. The top part (cropped) is just the LCD.
- 
- And a close-up of the corner missing the components.
- I was able to find another identical device, and the components are intact. One is a coil of wire on a black spool with a rectangular top. The other is a rectangular box labeled "100-10L A9".
- Here is a general view:
- 
- And again the close-up, including the mystery wire coil component:
- 
- Is this wire coil a filter of some sort? An impedance? What does it do?
And what is the black box to its left?- I am hoping to either replace or re-make the components to restore the PCB.
- I have here an acre-counter or crop counter device like the lykketronic shown below, using two AA batteries. It arrived without working.
- 
- Upon opening its case, I found that the PCB is missing two components, and the area where these components were is scratched, as though someone removed them carelessly.
- Here is a photograph of the main PCB. The top part (cropped) is just the LCD.
- 
- And a close-up of the corner missing the components.
- I was able to find another identical device, and the components are intact. One is a coil of wire on a black spool with a rectangular top. The other is a rectangular box labeled "100-10L A9".
- Here is a general view:
- 
- And again the close-up, including the mystery wire coil component:
- 
- Is this wire coil a filter of some sort? An impedance? What does it do?
- And what is the black box to its left? It looks like an SMD capacitor like [this one at mouser](https://www.mouser.cl/c/passive-components/capacitors/tantalum-capacitors/tantalum-capacitors-solid-smd/?capacitance=100%20uF&voltage%20rating%20dc=10%20VDC&_gl=1%2Ao21zq9%2A_ga%2AMTg0NzI1ODY4Mi4xNzEyMTU0NzYy%2A_ga_15W4STQT4T%2AMTcxMjE1NDc2Mi4xLjAuMTcxMjE1NDc2NS41Ny4wLjA), but I don't know how to interpret its label.
- I am hoping to either replace or re-make the components to restore the PCB.
#2: Post edited
by
Conrado
·
2024-04-03T14:17:35Z (11 months ago)
I just realized that two components are missing; I've edited to include both
What is this mystery component of wire coil?
- What are these mystery components (one of wire coil, another labeled "100-10L A9")?
- I have here an acre-counter or crop counter device like the lykketronic shown below, using two AA batteries. It arrived without working.
- 
Upon opening its case, I found that the PCB is missing a component, and the area where this component was is scratched, as though someone removed it carelessly.- Here is a photograph of the main PCB. The top part (cropped) is just the LCD.
- 
And a close-up of the corner missing the component.I was able to find another identical device, and the component is intact. It is a coil of wire on a black spool with a rectangular top. Here is a general view:- 
- And again the close-up, including the mystery wire coil component:
- 
Is this a filter of some sort? An impedance? What does it do?I am hoping to either replace or re-make the component to restore the PCB.
- I have here an acre-counter or crop counter device like the lykketronic shown below, using two AA batteries. It arrived without working.
- 
- Upon opening its case, I found that the PCB is missing two components, and the area where these components were is scratched, as though someone removed them carelessly.
- Here is a photograph of the main PCB. The top part (cropped) is just the LCD.
- 
- And a close-up of the corner missing the components.
- I was able to find another identical device, and the components are intact. One is a coil of wire on a black spool with a rectangular top. The other is a rectangular box labeled "100-10L A9".
- Here is a general view:
- 
- And again the close-up, including the mystery wire coil component:
- 
- Is this wire coil a filter of some sort? An impedance? What does it do?
- And what is the black box to its left?
- I am hoping to either replace or re-make the components to restore the PCB.
#1: Initial revision
by
Conrado
·
2024-04-03T13:53:36Z (11 months ago)
What is this mystery component of wire coil?
I have here an acre-counter or crop counter device like the lykketronic shown below, using two AA batteries. It arrived without working.  Upon opening its case, I found that the PCB is missing a component, and the area where this component was is scratched, as though someone removed it carelessly. Here is a photograph of the main PCB. The top part (cropped) is just the LCD.  And a close-up of the corner missing the component. I was able to find another identical device, and the component is intact. It is a coil of wire on a black spool with a rectangular top. Here is a general view:  And again the close-up, including the mystery wire coil component:  Is this a filter of some sort? An impedance? What does it do? I am hoping to either replace or re-make the component to restore the PCB.