thank you for a to the point demonstration without all the extra meaningless crap!

these are classic multimeters dude. i didnt really know how to check voltage on these old ones... but your video showed me and now i finally figured out what was wrong with my car lol. thanks man

@17hmr243

2 жыл бұрын

yar but if u touch mains power u need fuse replacement :)

Thanks for the vid, showed me how to do everything perfectly. I'm also very glad i was able to get 12v and 5v on the molex connectors.

Cheers, I tested the little power brick out, only has one common earth at pin 2 or 3 not both, but the 1 and 4 are correctly wired as +5v (5.1v) and +12v (+12.2v). I didn't have anything to hand to put a load onto it and check amperage, but it's rated at 2A on each rail. Ah well, I got to look inside the old HDD (Maxtor 80GB). Single mirror-finish platter, magnets, lots of stuff. Couldn't be bothered with finding and changing the TVS diodes...they are freakin' tiny! That was easy. Thanks :)

Hey, thanks for the comment :). Yes you should be able to use a multimeter to check the voltages on any powersupply. Thats a shame about your harddrive :(. Your PSU should be okay especialy if its a good brand with good components, you can check if the voltages are stable and running at the proper voltage.

Hi, nice simple instructions, I can follow that. Would this technique also apply to testing a separate power supply? I recently bought an IDE/SATA to USB kit, and it had a molex terminated power supply, with a molex-SATA power adaptor. It worked fine but I, STUPIDLY, plugged in the molex upside down into an old IDE HDD - and killed it (won't power on any more, and dodgy smell). The PSU seems to power the DVD drive OK still, but I dunno if I damaged that little PSU. Cheers

@Chea7z Your welcome. I'm glad it was helpful to you :) thanks for watching

2 Questions, how to do you test the 3.3v? And secondly I'm from England, where you set your current to dvc 20 volts, would mine be different?

I don't know if its dangerous or not but it does seem very high. Try run a heavy load application on your computer like running futuremark's 3dmark06 or a game and see if the voltage drops to a safer zone. What power supply are you using?

Thanks for the video! Unfortunately I don't have a molex connector on my PSU. Can I also do this with a 4-pin floppy drive power connector? Also, is it safe to connect the multimeter when the computer is still on and the PSU is connected to the motherboard?

@riznrik

7 жыл бұрын

Yes, you can user the 4-pin floppy drive connector. I am not a qualified engineer or anything but I believe you can connect the multimeter to the system, as long as you are careful and do not short circuit the system.

We are awesome ;)

dear pls make video to check voltage of 24 pin & 4 pin which conect to motherboard

@gmrgrl09 its not a calculator its a multimeter. you can buy them from maplins.

Ok, so I won't short out the PSU by inserting the probes in that way - thank you :) This is what I wanted to know. I have already fried a laptop so I'm very careful now.

Sorry I don't know how to check the 3.3v rail :( I too live in the UK LOL. The current is the same. :)

Shit where did you get that giant yellow calculator from?

Check this out >> /watch?v=bjyiriNOhyI But you need an extra SATA cable. You can disable your DVD if it uses SATA.

we have the same multimeter:) lol