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.
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.
So I simply disassembled the meter to hook up my power supply to try to recharge the battery.
After couple of hours of charging.
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
Interestingly it's also a component tester