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Protek 9902AQ not functioning

The voltage reading is stuck in -8.6v and resistance range does not give the right value .I have checked most of the surrounding capacitor values ,resisters,diodes,and transistors but in vain .what could be the problem.

Ответ на этот вопрос У меня та же проблема

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Hi,

What is the model number of the DMM?

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Try a new battery first. If not I’d recycle it and buy another.

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The model is protek 9902A it is a bench top and it is electric it does not have any batteries.

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