I'm doing a recap job. I measured three Rubycon 50v 33uf electrolytic capacitors and they all showed about 31uf of capacity on the MK-168 transistor tester (ESR meter) but no ESR reading at all. I then measured some brand new caps with ratings around these rubycons and the meter correctly gave both a capacitance AND an ESR readout. Any ideas?
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ESR meter (MK-168) not showing ESR readout on certain capacitors?
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ESR meter (MK-168) not showing ESR readout on certain capacitors?
Last edited by JimBanville; 04-14-2021, 06:40 AM.Tags: None
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Re: ESR meter (MK-168) not showing ESR readout on certain capacitors?
Yes they are bad. I will check later to see what you should expect9 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: ESR meter (MK-168) not showing ESR readout on certain capacitors?
Originally posted by sam_sam_sam View PostYes they are bad. I will check later to see what you should expect
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