Eagle K1400 Multimeter

[Yorkie]

New Forum Member Ray - 'Sunray' has sent me a PM asking for advice on repairing one of these meters. I've tried to respond as a PM but have had the message 'Sunray has personal messaging disabled'. Maybe that's something to do with how his profile has been set up, because clearly no-one is going to prevent himself from receiving replies to messages he's sent to a forum member. To try to help Ray, below is a verbatim response I'd penned, which hopefully he'll be able to read, and which might help a little, so here goes:

Hi Ray,

Firstly, welcome to the forum. It's quite relaxed and friendly, and I hope you'll soon feel at home here

As to the K1400, I'm really sorry to say that no - I no longer have it, otherwise I'd have been only too happy to help. You'll gather from my thread about it on the forum that I never came up with a circuit for it.  I assume that the 1.5V and 4.5V batteries are only required for the Ohms ranges, with perhaps the 1.5V serving the X1 and X10 ranges, and the 4.5V battery serving the X100 Ohms range. That's similar to how the AVO8 works.

I think the negative wire will have become detached from a switch contact associated with the X100 range, but that's only an assumption on my part as it depends on whether the negative or positive connections of the batteries are switched. If you trace the wiring of the 1.5V cell to the range switch and can see that it's connected to the X1 & X10 ranges on the switch,  you might be able to see where the X 100 connection has come adrift on the adjacent Ohms X 100 position.

If you enlarge the pic of the  inside of the meter that I posted and compare it with your meter, you might just spot where the wire has come adrift, though all I can see is the black wires disappearing in the general vicinity of the switch. I'd suggest that first of all, you short out the prods on the X1 and X10 resistance ranges with the 1.5V cell in place, then try the X 100 range. If the first two work and the third range doesn't, at least you will confirm that the 4.5V battery is for the X 100 range. If so, I'd be inclined to short out the prods on the X 100 range, and poke the negative wire from the 4.5V battery at various points to see if you can get that range to come to life. If the meter works on the AC/DC Voltage ranges and the current ranges, as I suspect that it will, at least you'll then  have narrowed it down to the X 100 Ohms range.

Really sorry not to be able to help more Ray, which I'd have been very willing to do had I still got the meter.

Best of luck with it!