One of those Scope/Multimeter for 50$ ? sure I'll take it. Was listed as "Untested, For parts or not working" and I was feeling lucky.
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1202436;image)
It’s funny when something is already cheap but the "Make an offer" option is available, some people get greedy and try to get an even better deal. 2 offers were already pending so I just hit "Buy it now" at 49.99$US. Brand new, the TPI 440 goes for 400$US.
Now fist problem is the DC jack being a really weird format.
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1202440;image)
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1202444;image)
So I simply disassembled the meter to hook up my power supply to try to recharge the battery.
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1202448;image)
After couple of hours of charging.
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1202452;image)
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1202456;image)
The meter is working perfectly. I can now safely poke main to check the waveform! I wanted something like that to work on PSU. There's bunch of features, including a trend mode. I like that
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif)
Interestingly it's also a component tester
![Smiley :)](https://www.eevblog.com/forum/Smileys/default/smiley.gif)
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1202460;image)
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1202464;image)