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| How to take apart Voltcraft/Metex 3650B |
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| retiredcaps:
--- Quote from: j-man on January 12, 2015, 12:53:08 pm ---Any suggestion will be much appreciated. --- End quote --- Can you post pictures of the insides of multimeter? Something like what I did in this post? https://www.eevblog.com/forum/repair/metex-m-3610-repair-help-dmm-won't-zero-properly-in-ohms-and-dc-volts/ |
| j-man:
Here are the pictures. The IC - Maxim MAX130CPL - is under the LCD display, in a socket. I checked it and I didn't notice any sign of damage or dirt, so I put it back in its place for now. There are two pictures of random measurements: with one probe shorting COM and V/?, the display moves alternatively from "overrange" and random values :-// |
| retiredcaps:
The grey spark gap between the V and COM jack should read open circuit when measured with another meter when set to resistance/ohms mode. |
| retiredcaps:
Can we get a close up shot of those two blue components by the V and COM jack? I can't make out what they are because your picture is too dark. |
| retiredcaps:
The component circled in red here might be a PTC? I would know for sure if I could only find my board? :palm: If it is a PTC, I think it should measure around 1k ohm. |
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