Bench power supply- Amp needle not working


Old 04-28-18, 07:41 AM
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Bench power supply- Amp needle not working

I have used this 1 Amp/ 18VDC power supply for some time without any problems. I find the amp indicator very handy but now it stopped moving on the scale. The rest of the power supply works just fine. Why is this needle frozen ? I opened it up to see if I can find anything unusual but found none. It is a generic aka chines brand supply so I know I will not find any service info on it. Any tips or pointers as to what to look for would be much appreciated. I want this amp indicator moving again .
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Old 04-28-18, 09:24 AM
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When you hold the power supply and shake it.... does the needle move at all ?

You're right.... you probably won't find any service info.
If you could take a few pics of the inside and post them we could probably guide you.

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