Split from this thread:
https://www.vintage-radio.net/forum/...d.php?t=140392
I have one of these apart at the mo, and this thread is timely! I took mine apart to cure a cut-out which wouldn't latch; I fixed that, and now find it won't zero on 100,000 ohm range, and is entirely dead on 1000 ohm. 10,000 ohm range seems to work OK. All AC and DC voltage and current ranges seem OK too.
I don't really need it to work for R measurement - but it's so nicely made that now I have it apart, I feel obliged to fix it before putting it back together. I've had a look at the circuit diagram above. If anyone knows the component layout it would save me a bit of tracing out. A resistor attached to the 10k ohm switch position looks rather burnt, for a start - I'll need to study the diagram to work out what value it might once have had.
Circuit diagram:
https://www.vintage-radio.net/forum/...7&d=1311627688
cheers
Mark