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Old 01-22-2022, 06:28 PM   #1
sam_sam_sam
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Default DVR camera recorder switching power supply capacitor failure really

These cheap non brand capacitors at it again

Last night we had a power outage [ long drawn out trying three to come back up before going out completely ] and when I went to turn the DVR camera recorder back today no go 3 bad capacitors ( one capacitor no ESR reading on DVR board the other 3 capacitor on the power supply board over 40 ohm this is not a misprint ) on the external switching power supply and one capacitor on the DVR camera recorder board where the power supply that goes to the hard drive disk is

Well at least I have the cameras back on line I to try the hard drive tomorrow and see if it got damaged as well

One note the cameras are on a medical grade switching power supply by themselves because when I first put in this system I continuously had switching power supply failure on the cameras and had to replace several cameras and switching power supply of because of switching power supply failure

All I can say good about this DVR camera recorder and switching power supply is that this has lasted about 6 years so I guess I really should not complain to much about it

I will post some pictures of the switching power supply before I put heat shrink tubing on it to keep it together and after I try the hard drive to see if it still work
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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

Last edited by sam_sam_sam; 01-22-2022 at 06:52 PM..
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Old 01-22-2022, 09:17 PM   #2
R_J
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Default Re: DVR camera recorder switching power supply capacitor failure really

6 years = 52,594.92 Hours, I would say that cap had a full life
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Old 01-22-2022, 09:55 PM   #3
eccerr0r
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Default Re: DVR camera recorder switching power supply capacitor failure really

6 years POH or 6 years sitting in the closet?
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Old 01-23-2022, 12:01 AM   #4
sam_sam_sam
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Default Re: DVR camera recorder switching power supply capacitor failure really

Quote:
Originally Posted by R_J View Post
6 years = 52,594.92 Hours, I would say that cap had a full life
Yeah it even keeps trying to restart which is really weird even with the capacitors being at over 40 ohm ESR reading because the power supply light pulsing very quickly on and off on the DVR camera recorder

Last edited by sam_sam_sam; 01-23-2022 at 12:06 AM..
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Old 01-23-2022, 10:21 AM   #5
sam_sam_sam
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Default Re: DVR camera recorder switching power supply capacitor failure really

Well is has been running scene last night and so far so good I am supposedly going on vacation next week but not this Monday but next Monday and then I will test the hard drive and if still good will put it all back together and call it repaired
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