Re: Eico 555 multimeter

I also have a Eico 555 which needed resistors. So I used series parallel combinations to get as close to the correct value as possible. I also replaced the diode bridge with two 1 amp diodes. My biggest problem is the battery pack which I have to replace. I am also going to try and replace the "D" battery with something smaller like a "AA" lithium battery. My biggest problem is the meter goes negative in the highest resistance range when the leads are shorted.