THAT IS A GREAT learning idea!I guess you have "reverse engineer" the PCB back to a schematic. Then we may be able to help.
I guess you have "reverse engineer" the PCB back to a schematic. Then we may be able to help.
I see some of you guys are "slow statrers" takes a few wise cracks to get the experts to jump in.Strangely enough I have just used an old Eagle analog multimeter I bought in 1969.
Daughter dear came home without her mobile phone charger so I had to lash up something on the bench.
Of course if I'm going for a 4 hour charge cycle and I want to monitor the current I can waste a heck of a lot of digital meter battery.
But an old analog one that happily monitors 50 - 150 milliamps at no cost - great.
Thank you, my bad!Jameco may still have 1N34's.
bigcape - that resistor appears to be 1.15K (1,150 ohms), and not 1K5, or 1500 ohms.
Guess he could try a 1N1186 to play safe. Have to make a hole in the case, though.
I actually may be up for the challenge! Thank you.I know this isn't your meter, but attached is the schematic of a simpson 260.
It will give you a clue on how to lay out your schematic, if your so inclined.
JEEZE! There is no way I could build the METER from THAT!!!! GAME ON!!!!I know this isn't your meter, but attached is the schematic of a simpson 260.
It will give you a clue on how to lay out your schematic, if your so inclined.
The advice was well taken. GO! GERMANIUMS!So that strengthens my contention that your mystery component is a germanium protection diode. Use the IN34.
The process was expensive, no doubt.It's not worth repairing.
Get a new one and start over.