Repairing a Fluke 8810A Multimeter

Thread Starter


Joined Jul 16, 2011
Hi guys.

I managed to buy a Fluke 8810A for £1, knowing that it wasn't working. The selection switches were broken bar one, and they were also jammed. Also the meter didn't seem to measure properly.

I thought that at worst, it had some 7 segment displays which I could salvage, as well as a transformers, etc...

But I'd like to fix it. :)

I managed to fix the jammed switch by pulling out a piece of metal which did nothing other than prevent the switches from ascending into place. I'm making up a couple of new switch levers at school, so those parts are sorted.

However, I've tried calibrating, but it seems impossible. I've read the manual (, but I cannot get it to settle. The decimal point moves around, and the variable resistor which is used to calibrate does nothing. The variable resistor does work, I've checked it with a multimeter.

YouTube video here with all the information.

Thanks for your time,



Joined Sep 7, 2009
These older meters used to be built around a 7106 or 7107 chip which was known to blow easily (mine's on it's third).

Also check for any blown fuse or fuse link on the PC board.