Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 12 replies
  • Subscribers 32 subscribers
  • Views 1877 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Multimeter Problem.

Zoomup

Please help. I have a second hand P.O. meter no 12 C/1. It is a moving coil meter. It reads o.k. on Volts but under reads on Ohms. The zeroing pot does not seem to work. A label inside states that it has thick film components. Why won't it read Ohms accurately? Can it be repaired.

Thanks,

Z.

Parents
  • 0

    Can you photo the inside - a bit of reverse engineering may be in order.

    ‘Thick film’ meant different things at different times - it may be that resistors are wire ended ceramic rods coated in carbon or nichrome and then dipped in paint, or there may be PCB chip mount resistors, or the real pain, there may be a PCB like structure with the resistors formed as tracks printed in a lossy material.

    But seconded, most things can be repaired, the effort varies.

    Mike

Reply
  • 0

    Can you photo the inside - a bit of reverse engineering may be in order.

    ‘Thick film’ meant different things at different times - it may be that resistors are wire ended ceramic rods coated in carbon or nichrome and then dipped in paint, or there may be PCB chip mount resistors, or the real pain, there may be a PCB like structure with the resistors formed as tracks printed in a lossy material.

    But seconded, most things can be repaired, the effort varies.

    Mike

Children
No Data

Community Rules & Guidelines