Arcade Collecting > Miscellaneous Arcade Talk
How to use a multimeter to troubleshoot
Crowquill:
--- Quote from: shardian on July 12, 2007, 03:55:53 pm ---What people who delve into electronics without any prior knowledge should do is go to the book store or local Lowes/Home Depot and get an electronics basics book. Using a multimeter with no knowledge of what you are measuring is the equivalent of a cop using a radar and saying "wow, 97 mph. Wonder what that means? The book says 80 is the max, so it must be bad". (Yes, I know my analogy sucked)
--- End quote ---
Good point. A bold note about this and general electricity warning has been added to first post. Did I miss anything?
CheffoJeffo:
Timely topic -- I was reading the DMM articles in Randy Fromm's Big Blue Book last night and thinking that this stuff is gold. I already knew the basics, but there is so much there.
Worth signing up for his tech department just to get the BBB.
RayB:
I copied Randy's DMM page, back when it was free...
All you really need to know is the basics.
If measuring AC, set the DMM to AC section.
If measuring DC, set the DMM to the DC section.
Then figure out what the maximum value SHOULD be and set the DMM to the next highest value. So if you're measuring 12v DC, then set the DMM to 20v DC measuring setting. Touch the ground prong to DC ground. And then touch the power probe to the 12v DC output. Read the value that appears. Easy as that.
Level42:
http://arcarc.xmission.com/PDF_Arcade_Atari_Kee/Atari_TM-129_The_Book.pdf
torez:
--- Quote from: Level42 on July 30, 2007, 12:03:01 pm ---http://arcarc.xmission.com/PDF_Arcade_Atari_Kee/Atari_TM-129_The_Book.pdf
--- End quote ---
Wow nice find, thanks!
Yeah, remember spending around $500 a semester for my books. At the end of the semester only a few were "returnable" and that's at around 20-25%. Each year new edition of the books came out, so the company making them would make more money. All they did is move pages around and renumber graphs/pictures, so if teacher talked about one in class, you would need that new book to understand what's going on. I'm sure same thing is going on today. What a ripoff! I'm surprised nobody sued them for this kind of practice. :soapbox:
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