Troubleshooting Power Supplies and Power Supply Design

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Technical discussion for power supplies. This covers PC supplies, and any other related power supply issue. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!

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Topics Statistics Last Post
Sticky: List of pin compatible pwm/supervisor PSU ICs
by Quaddro
Started by Quaddro, 12-06-2019, 02:54 AM
19 responses
12,595 views
0 reactions
 Last Post protocold
by protocold
10-29-2025, 09:12 PM
Sticky: the gutless, bloated, and fried power supply hall of shame
by ratdude747
Started by ratdude747, 12-18-2009, 05:18 AM
1,759 responses
590,320 views
0 reactions
 Last Post PeteS in CA
by PeteS in CA
09-16-2024, 04:31 PM
Sticky: Power supply build quality pictorial. part 2
by kc8adu
Started by kc8adu, 06-29-2009, 01:23 PM
3,227 responses
1,390,631 views
0 reactions
 Last Post japlytic
by japlytic
09-14-2024, 07:04 PM
Sticky: WARNING: Live heatsinks & single pole on/off switches in switching power supplies
by Per Hansson
Started by Per Hansson, 06-09-2021, 12:01 PM
6 responses
7,522 views
0 reactions
 Last Post RJARRRPCGP
by RJARRRPCGP
12-29-2021, 12:12 AM
Sticky: The PSU FAQ
by PeteS in CA
Started by PeteS in CA, 08-28-2005, 04:29 PM
55 responses
124,920 views
0 reactions
 Last Post bianchi77
by bianchi77
08-31-2016, 11:54 PM
Sticky: General PSU Discussion and FAQ contributions
by PeteS in CA
Started by PeteS in CA, 08-28-2005, 04:29 PM
20 responses
69,015 views
0 reactions
 Last Post moe2020
by moe2020
10-04-2015, 12:04 AM
Sticky: Power supply build quality pictorial DISCUSSION
by dood
Started by dood, 12-21-2005, 03:39 PM
353 responses
221,124 views
0 reactions
 Last Post momaka
by momaka
06-19-2014, 12:52 PM
Closed, Sticky: Power supply build quality pictorial.closed.use part 2
by dood
Started by dood, 12-21-2005, 03:39 PM
410 responses
435,366 views
0 reactions
 Last Post jvyt
by jvyt
06-25-2009, 01:40 AM
which one to use...
by Uranium-235
Started by Uranium-235, 02-20-2013, 02:39 AM
16 responses
5,245 views
0 reactions
 Last Post Behemot
by Behemot
03-06-2013, 02:45 PM
IBM AA20790 Power Supply Ham Conversion
by Jack Crow
Started by Jack Crow, 03-04-2013, 01:16 PM
1 response
3,609 views
0 reactions
 Last Post LDSisHere
by LDSisHere
03-06-2013, 07:40 AM
Power Supply as Current Source
by snakub
Started by snakub, 03-05-2013, 03:35 PM
0 responses
1,871 views
0 reactions
 Last Post snakub
by snakub
03-05-2013, 03:35 PM
Imac Isight G5 PSU repair
by doanh
Started by doanh, 02-23-2011, 12:01 AM
24 responses
10,461 views
0 reactions
 Last Post Toasty
by Toasty
03-04-2013, 07:17 AM
PSU Gurus: PSU Ripple?
by tj2
Started by tj2, 12-30-2009, 07:41 PM
14 responses
6,992 views
0 reactions
 Last Post Behemot
by Behemot
03-04-2013, 04:48 AM
Antec SL350 Re-Cap
by synapse
Started by synapse, 01-04-2013, 07:28 PM
7 responses
2,816 views
0 reactions
 Last Post Behemot
by Behemot
03-03-2013, 06:02 AM
Help me get started on a middle-aged HP 'scope power supply?
by willray
Started by willray, 02-17-2013, 10:37 AM
21 responses
6,711 views
0 reactions
 Last Post willray
by willray
03-01-2013, 12:54 PM
Ultra 550 5vsb Mod with NCP1200
by LDSisHere
Started by LDSisHere, 02-28-2013, 11:59 PM
1 response
1,915 views
0 reactions
 Last Post LDSisHere
by LDSisHere
03-01-2013, 12:09 AM
50pc1dra lg tv
by buzz86
Started by buzz86, 02-28-2013, 09:28 PM
0 responses
1,743 views
0 reactions
 Last Post buzz86
by buzz86
02-28-2013, 09:28 PM
Mystery power supply
by everell
Started by everell, 09-09-2012, 04:38 PM
35 responses
11,520 views
0 reactions
 Last Post PeteS in CA
by PeteS in CA
02-28-2013, 11:25 AM
Resistors for power supplies questions
by LDSisHere
Started by LDSisHere, 02-24-2013, 05:39 PM
3 responses
1,808 views
0 reactions
 Last Post everell
by everell
02-25-2013, 08:22 PM
IMAC 12V Power supply
by budm
Started by budm, 02-23-2013, 10:36 PM
0 responses
1,808 views
0 reactions
 Last Post budm
by budm
02-23-2013, 10:36 PM
Need help to fix a LC-Power LC6550G 550W power supply: turns on for 1 second
by Jooo
Started by Jooo, 02-19-2013, 12:49 PM
5 responses
5,323 views
0 reactions
 Last Post Khron
by Khron
02-21-2013, 05:45 AM
Antec SP-450P caps
by davmax
Started by davmax, 07-24-2006, 06:41 AM
25 responses
14,468 views
0 reactions
 Last Post mockingbird
by mockingbird
02-20-2013, 03:49 PM
micro ATX PSU recapping help needed
by smile
Started by smile, 02-18-2013, 07:47 AM
4 responses
2,952 views
0 reactions
 Last Post mariushm
by mariushm
02-18-2013, 12:05 PM
FSP250-60GEN Fan Voltage Problem
by jm20101
Started by jm20101, 02-16-2013, 11:05 AM
12 responses
3,464 views
0 reactions
 Last Post ben7
by ben7
02-17-2013, 03:45 PM
AcBel PC6013 HP 5188-7521 160w Shorted Blowing Fuse
by Per Hansson
Started by Per Hansson, 02-04-2013, 04:00 PM
32 responses
10,659 views
0 reactions
 Last Post Behemot
by Behemot
02-17-2013, 02:44 PM
Two questions about repairing Antec PSU
by jpyerry
Started by jpyerry, 02-14-2013, 08:59 PM
2 responses
3,762 views
0 reactions
 Last Post jpyerry
by jpyerry
02-15-2013, 12:22 PM
Mobitronic mbc-8iu,mbc-16iu
by Potorac
Started by Potorac, 02-15-2013, 12:19 PM
0 responses
1,962 views
0 reactions
 Last Post Potorac
by Potorac
02-15-2013, 12:19 PM
iMAC G5 PSU (again.. sigh)!
by JEWilson
Started by JEWilson, 01-19-2013, 09:12 PM
10 responses
3,916 views
0 reactions
 Last Post JEWilson
by JEWilson
02-14-2013, 11:39 AM
Thomson JL8006A PVR - shorted +12V rectifier
by japlytic
Started by japlytic, 02-14-2013, 05:20 AM
1 response
2,097 views
0 reactions
 Last Post joshnz
by joshnz
02-14-2013, 09:10 AM
I have no power
by James555
Started by James555, 12-06-2012, 10:39 AM
3 responses
2,796 views
0 reactions
 Last Post safensecure
by safensecure
02-14-2013, 05:31 AM
how to find bad caps if they measure/look good??
by smile
Started by smile, 02-08-2013, 01:57 PM
42 responses
15,664 views
0 reactions
 Last Post smile
by smile
02-14-2013, 04:43 AM
LeCroy 93xx power supply
by japlytic
Started by japlytic, 02-14-2013, 12:47 AM
0 responses
2,402 views
0 reactions
 Last Post japlytic
by japlytic
02-14-2013, 12:47 AM
"POWER PC" ML915 350W power supply
by Newbie2
Started by Newbie2, 02-07-2012, 06:20 PM
95 responses
38,637 views
0 reactions
 Last Post momaka
by momaka
02-13-2013, 08:45 PM
"NO DISPLAY" message on PC monitor.
by amitanpat
Started by amitanpat, 02-13-2013, 09:25 AM
3 responses
2,484 views
0 reactions
 Last Post selldoor
by selldoor
02-13-2013, 11:07 AM
Corsair GS600 Noise
by Skrym
Started by Skrym, 02-13-2013, 12:46 AM
3 responses
3,940 views
0 reactions
 Last Post Th3_uN1Qu3
by Th3_uN1Qu3
02-13-2013, 05:52 AM
Desoldering Station Switching Power Supply Problem Cold
by sam_sam_sam
Started by sam_sam_sam, 02-12-2013, 05:18 PM
1 response
1,938 views
0 reactions
 Last Post RJARRRPCGP
by RJARRRPCGP
02-12-2013, 08:12 PM
Coil as shunt??
by Behemot
Started by Behemot, 02-12-2013, 03:46 PM
2 responses
1,874 views
0 reactions
 Last Post Behemot
by Behemot
02-12-2013, 04:30 PM
HIPRO with lots of teapo goodness ;)
by cyclones
Started by cyclones, 07-18-2011, 10:46 PM
7 responses
4,848 views
0 reactions
 Last Post aanev
by aanev
02-10-2013, 05:07 PM
Viewsonic VX922 PSU Caps
by protocol.
Started by protocol., 04-29-2009, 04:39 PM
6 responses
5,137 views
0 reactions
 Last Post Samy1
by Samy1
02-10-2013, 02:20 PM
Hp 18.5V power brick problems
by pdavid
Started by pdavid, 02-07-2013, 02:09 PM
5 responses
2,808 views
0 reactions
 Last Post mariushm
by mariushm
02-09-2013, 02:22 PM
fan 7529, is it equivalent to Irf7314
by ron77
Started by ron77, 02-09-2013, 06:47 AM
4 responses
6,161 views
0 reactions
 Last Post ron77
by ron77
02-09-2013, 07:44 AM
PSU with 12.67V on the 12V rail, should I be worried?
by Koda
Started by Koda, 02-04-2013, 05:52 AM
7 responses
3,541 views
0 reactions
 Last Post Koda
by Koda
02-08-2013, 09:22 AM
Smart UPS 420/1000 should I add a fan?
by smile
Started by smile, 02-07-2013, 10:59 PM
1 response
1,957 views
0 reactions
 Last Post kc8adu
by kc8adu
02-08-2013, 05:24 AM
computer not turning on. How to ID bad power supply w/o buying new one?
by 8_INCH_FLOPPY
Started by 8_INCH_FLOPPY, 08-29-2012, 12:48 PM
20 responses
6,432 views
0 reactions
 Last Post sam_sam_sam
by sam_sam_sam
02-07-2013, 07:21 PM
VT130 Hem Saw Compter Board Would not work when cold weather
by sam_sam_sam
Started by sam_sam_sam, 02-07-2013, 05:41 PM
0 responses
2,373 views
0 reactions
 Last Post sam_sam_sam
by sam_sam_sam
02-07-2013, 05:41 PM
Optiquest Q9 Board "ILPI-025"
by mockingbird
Started by mockingbird, 11-28-2010, 02:45 AM
10 responses
9,262 views
0 reactions
 Last Post dpdemay
by dpdemay
02-06-2013, 12:31 AM
Ps3-cech-3001a psu
by User
Started by User, 01-29-2013, 04:42 PM
12 responses
5,563 views
0 reactions
 Last Post User
by User
02-05-2013, 06:07 PM
Questions on recapping a Seasonic SS-300FS
by tj2
Started by tj2, 12-03-2009, 05:12 PM
65 responses
19,707 views
0 reactions
 Last Post gas_liosia
by gas_liosia
02-05-2013, 03:41 PM
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