[Shaky]

Thanks again Hans. No obvious damage or wear to the cable that I can see but I’ve seen quite a few broken conductors within insulation in my job (Copper Telecoms Cable Jointer), we used to call them “High Resistance Disconnections” so I realise that isn’t a given that it will be OK just by looking at it. I did flex the cable quite a few times while watching my meter just in case I got a sporadic reading but again, nothing. I do like attempting to repair stuff like this as I like a challenge so if @INNOVV could actually reply on here and give me some pointers, I would appreciate it 👍

I don’t want to start tearing it to pieces without at least knowing what I should be looking for at least. A wiring diagram schematic would be useful if that’s a possibility.

Regards.

Shaky

[Shaky]

Thanks for the reply Hans. I did notice that the replacement microphones aren’t expensive but I would like to confirm the microphone is actually faulty first before purchasing one so I have done the following tests as I believe the microphone is the electrec type yes ?:-

Resistance measure across mic – 1.27kΏ if I remember correctly which does vary (increases) as sound is produced into it, or brushing a finger across it.

When DVR unit is powered up and recording video, no voltage is present across the pins in the plug feeding the microphone which I think should usually be between 2-4Vdc ?

I’m thinking that maybe the mic stage of the DVR is the problem here unless I am not testing correctly ? I am not an electronics genius in any way btw so I may well be using an incorrect procedure here, can you confirm or deny at all ?

Thanks again & regards.

Shaky

• This reply was modified 1 month, 2 weeks ago by  Shaky.