vdo tach repair

[BrendAn]

i have a vdo tacho that is not working in the jabiru. it runs off a sensor on the flywheel.

it has the inbuilt hour meter as well.

Can anyone tell me if it can be repaired. it doesn't power up.

i  would hate to throw it out if its just a dry solder joint or something simple.

a new one is $440 which does not bother me. its the loss of the recorded hours i would like to save.

[T510]

I have used Howard Instruments for VDO gauge repairs in the past. 

 

They can be a little caustic and I know a few people who have had personality clashes with them but in my experience they do good work at a fair price.

[onetrack]

There was a previous discussion around this same problem. The OP found a repairer in Adelaide.

 

https://www.aircraftpilots.com/forums/topic/38510-vdo-rev-counter-hour-meter/#comment-531538

 

[BrendAn]

57 minutes ago, T510 said:

I have used Howard Instruments for VDO gauge repairs in the past. 

 

They can be a little caustic and I know a few people who have had personality clashes with them but in my experience they do good work at a fair price.

i notice on this one the needle will flick up for a second when you apply power then its dead. and the hours don't come on. do think it might be just a power problem.

[skippydiesel]

2 hours ago, BrendAn said:

i notice on this one the needle will flick up for a second when you apply power then its dead. and the hours don't come on. do think it might be just a power problem.

First off - Check cables for continuity and the that all joins are clean & secure . Pay special attention to the earth (-) return.

 

After the above, if it's still dead,  you may need an electronics technician. Good luck! 😈

 

[Thruster88]

A Jab 55 here is having electrical issues, has been diagnosed as a bad fuse block. Tests fine until put under load.

[BrendAn]

I have the tacho on the bench. I get nothing when I put power direct to the terminals. The problem is in the tacho itself.