i try to test an smd capacitor out of circuit but get no reading how to do?
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Help with smd capacitor test
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Re: Help with smd capacitor test
You really can not test capacitors correctly this way you at a minimum have capacitor checker at minimum but really need a ESR capacitor tester to do this correctly9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *
These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%
1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board
All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
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Re: Help with smd capacitor test
No capacitor can not be tested correctly just using diode test or ohmmeter
With just a ohm meter or diode test will only tell you if is shorted but nothing else really
Now if you have a capacitor tester that shows you UF value that is better than nothing however it does not tell you if the capacitor is good or not for this you need a ESR capacitor tester for this
This is the ESR capacitor tester that I use
https://www.ebay.com/itm/18423015559...QaAnBZEALw_wcBLast edited by sam_sam_sam; 09-05-2021, 09:09 AM.9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *
These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%
1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board
All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
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Re: Help with smd capacitor test
Originally posted by bohaboha View PostThank you for the answer your tools is for proffs9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *
These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%
1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board
All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
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Re: Help with smd capacitor test
You don't need to use that, the cheap "transistor tester" that has been discussed here and elsewhere works just fine and can be had for the same price as the cheapest beer you can find in Systembolaget."The one who says it cannot be done should never interrupt the one who is doing it."
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