I have locally bought (for 50€) Fluke 87 IV that wouldn't power on.
It looks like it was used a A LOT.
![Grin ;D](https://www.eevblog.com/forum/Smileys/default/xgrin.gif.pagespeed.ic.QVVz6XIT20.png)
![](https://www.eevblog.com/forum/repair/fluke-87-iv-repair-log/?action=dlattach;attach=301857;image)
![](https://www.eevblog.com/forum/repair/fluke-87-iv-repair-log/?action=dlattach;attach=301859;image)
On first inspection i noticed heavily corroded battery terminals (and one broken) which I took out for cleaning.
![](https://www.eevblog.com/forum/repair/fluke-87-iv-repair-log/?action=dlattach;attach=301865;image)
Dumped in vinegar for an hour:
![](https://www.eevblog.com/forum/repair/fluke-87-iv-repair-log/?action=dlattach;attach=301863;image)
I will solder a thin layer over contacts to prevent future corrosion. And also need to fix one broken tab.
![](https://www.eevblog.com/forum/repair/fluke-87-iv-repair-log/?action=dlattach;attach=301869;image)
For the first test of DMM I quickly soldered wires directly to PCB and It seems to work just fine...
![](https://www.eevblog.com/forum/repair/fluke-87-iv-repair-log/?action=dlattach;attach=301861;image)
Full resolution:
While trying to pry out dial knob, the screen plexiglass cracked, so there is more work to do...
![Grin ;D](https://www.eevblog.com/forum/Smileys/default/xgrin.gif.pagespeed.ic.QVVz6XIT20.png)