Bench power supply- Amp needle not working

Old 04-28-18, 07:41 AM
Thread Starter
Join Date: Apr 2005
Location: Arizona, USA
Posts: 180
Received 0 Votes on 0 Posts
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 .
Old 04-28-18, 09:24 AM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Posts: 69,484
Received 2,810 Votes on 2,542 Posts
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.

Thread Tools
Search this Thread
Ask a Question
Question Title: