Resistor R74 gone?

1

Hello,

On my limesdr (V1.4) i see that the R74 resistor is not mounted but it was there in the schematic.
Is this a modification or just went wrong during assembling?
What is the function from that resistor?

Regards Ben

2

Hello @pe2ben,

Could you please share a photo of your board.

3

Hello Zack,
I have tried without a success:
Image is to big (only 3.5 GB) and zipping doesn’t help.
Also i have no macro camera.
Just one Foto where you can see the empty place where the R74 should be.
But the image is to big and to blurry.
What you are looking for? There are some solder dots on the place where the R74 should be.
I s there another way to send that picture?
Should this resister be mounted ?
What is the function from that resistor?

Regards Ben

4

Hello Zack,

managed to got a image.

Regards Ben

image003.jpg1015×732 119 KB

5

Hi @pe2ben,

Check the schematic. R74 is designated as NF i.e. No Fit. Hence everything is OK.

6

Hello Zack,

in the schematic i see that R72 is NF but not the R74 (zero ohm resistor).
What is the switched signal FLASH AS SS what is coming in on pin 12 from the TS3A5018PWR ?
To where goes the EXP AS ASS signal ?

Regards Ben

7

Hello Zack,
it looks like the plug version R72 is NF and R74 is NF for the socket version regarding the schematics.
Regards Ben

8

Hello @pe2ben,

You should check this schematic. You are looking at wrong one. It will be removed from github, thanks for spotting this.