What is this component?

[VTI_16V]

Hello everybody. Does anybody know what is this red component with black stripe on one end? I found that some of theese are faulty. They are giving me reading all around from 10-60 k ohms, but only in one diretion. In diode mode - nothing. I know that they are problem because i changed them with another ones from identical board, and now everything works... Thanks in advance

 

[barry]

They sure look like diodes to me

 

[betwixt]

And me! MELF diodes of some sort.

Brian.

 

[barry]

Im betting LL4148.

 

[danadakk]

Glass capacitors or possible gas tube transient protectors.

Regards, Dana.

 

[ZASto]

@danadakk: Youwould loose the bet
Here is just a portion of the OP's first image, it clearly shows black band on one end , so it is a ....

 

[VTI_16V]

Omg theese are really diodes. But this whole board is covered by coating... And it looks like how much i tried that i couldn't make a good contact with leads when I was measuring in diode mode. When I took them off and scraped really good I can get a voltage drop of a diode in one direction... Probabbly some kind of fast switching diodes, becase they are getting a square wawe signal from that capacitor next to it which is generated by 555. LL4148 probabbly like Barry said