SMD red small Devices

[SMusc.1]

Does someones know what is the red devices in the board attached?

[TDK]

Those are spots of glue to keep the resistors from moving around when they are placing them. They serve no electrical purpose.

[Andrew Neil]

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@TDK wrote:

Those are spots of glue to keep the resistors from moving around .

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doesn't seem to have worked in this case!

 

[TDK]

> doesn't seem to have worked in this case!

Likely the part was intentionally not loaded and the glue stencil wasn't modified. Also note solder paste on those pads--same reason.