BloodyCactus wrote on 2024-04-06, 21:37:
pretty much anything these days is good enough!
I'd say a lot depends on how you define "good enough".
Yes, you can still do a lot even with the cheapest, nastiest of multimeters... though that will certainly vary with how far one's knowledge on electronics troubleshooting stretches. I personally don't recommend "cheap-n-cheasy" multimeters to beginners, despite starting my electronics repair journey with one (a regular "830" -based one, manual-ranging of course.) Primary reason for this is simply because these often have or quickly develop "small" issues (over time) - issues such as the dial not always making proper contact or the probes falling apart and/or loosing a connection internally. This can result in the multimeter displaying readings that are inconsistent, random, or just not giving any readings at all. Any of these mentioned issues can pose a danger to beginners, with the worst case probably being when checking for the presence of high-voltage (particularly large caps that might still be charged.) A crappy multimeter with such an issue might indicate the cap is discharged when in reality it isn't. Then you go to handle the device in question only to find out what you measured wasn't true (ask me how I know this. 😁 ) It also doesn't help if the meter is displaying inconsistent or "off" results - that can make one go hunt for "ghost" problems on a device.
With all of that said, there's been quite an improvement over the years in terms of what you can get for your money. Of course, it helps to know what to look for. You can get a very respectable "unbranded" multimeter that has both a rich feature set and is decently built... for no more than $15-20. Or, you can also still get a garbage, bottom-of-the-barrel & outdated 830 -based design for the same price (the red Harbor Freight meters or certain Amazon and eBay e-stores still carry these.) They are functional, but they are just not as nice or as easy to use (I own three of the red Harbor Freight MMs - they were freebies after all.)
For starters, don't go with anything less than an auto-ranging multimeter. Manual-ranging ones, I'll still take if I find them for free or for very cheap in person (i.e. under $3 - they are not worth paying shipping for.)
Here are a few respectable "unbranded" ones off of eBay (not to self: look up Vici VC835 for quicker results):
https://www.ebay.com/itm/125982203689
https://www.ebay.com/itm/315277416196
https://www.ebay.com/itm/314614098089
And here is the type of meters to AVOID (note: I am not making an anti-advertisement against the seller of this particular listing, but rather just the type of product sold.):
https://www.ebay.com/itm/355591204473
Also, I notice lately that there's been quite a few touchscreen / button-less ("smart") multimeters popping up. Not sure how good these are or if they are better than the tried-and-true dial-based ones. But going to link to an example of a few I found, just to show what's currently available.
https://www.ebay.com/itm/202518315961
https://www.ebay.com/itm/115871606818
Anyways, once you find a meter that you like, see if there are any (legit) reviews of it online (like EEVlog or similar) to see if there may be anything that you might not like about the meter. In regards to what was said above about not all meters beeping quickly in continuity mode, I also find this to be semi-annoying, though probably not as much as others (I tend to be patient for some things like this.) What I find interesting is that some of the really cheap meters (particularly like the one mentioned to avoid above) can sometimes have really quick continuity ("beep") response. But that alone doesn't make up for the lack of their cheapness, IMO. Also, some of the really really cheap ones (like the red HF ones I have) don't even have a buzzer built-in, so they don't beep at all on continuity/diode check mode. So indeed what you can get for your money can vary quite a bit.