If you want to solve your problem use separate supplies for each meter.Thus you can use voltmeter and ammeter at the same time. I had the same problem but there's no problem after seperating power supplies(+-5V 's). Now they are working properly with my psu.
ICL7107 ammeter
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If you want to solve your problem use separate supplies for each meter.Thus you can use voltmeter and ammeter at the same time. I had the same problem but there's no problem after seperating power supplies(+-5V 's). Now they are working properly with my psu.