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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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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
579,549 views
0 likes
 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
1,329,107 views
0 likes
 Last Post japlytic
by japlytic
09-14-2024, 07:04 PM  
Sticky: List of pin compatible pwm/supervisor PSU ICs by Quaddro
Started by Quaddro, 12-06-2019, 02:54 AM
18 responses
11,916 views
0 likes
 Last Post tartuf
by tartuf
01-17-2023, 06:36 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
7,334 views
0 likes
 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
124,645 views
0 likes
 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
68,818 views
0 likes
 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
220,548 views
0 likes
 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
433,657 views
0 likes
 Last Post jvyt
by jvyt
06-25-2009, 01:40 AM  
Westward model: 1JYU9B schematic help by Elric
Started by Elric, 06-24-2023, 05:13 AM
14 responses
1,544 views
0 likes
 Last Post stj
by stj
06-27-2023, 09:25 AM  
FAN 007 error at UPS Eaton ( in my case EX 3000 RT ) by x0x0x
Started by x0x0x, 06-26-2023, 11:19 AM
2 responses
1,078 views
0 likes
 Last Post x0x0x
by x0x0x
06-26-2023, 11:23 AM  
EVGA 650G - not powering on by Thainglo
Started by Thainglo, 06-14-2023, 09:40 AM
2 responses
832 views
0 likes
 Last Post Thainglo
by Thainglo
06-25-2023, 07:39 PM  
VESTEL 17PW26-5 Problem by yuuki47
Started by yuuki47, 05-22-2021, 11:32 AM
12 responses
3,728 views
0 likes
 Last Post ioan.onutu
by ioan.onutu
06-25-2023, 05:01 AM  
Are 11N80C3's available any more? by cooperus
Started by cooperus, 06-23-2023, 11:22 AM
4 responses
768 views
0 likes
 Last Post cooperus
by cooperus
06-23-2023, 02:05 PM  
XFX XTR 650W power on issue by MichR
Started by MichR, 08-18-2018, 12:30 AM
14 responses
5,493 views
0 likes
 Last Post madcrow
by madcrow
06-23-2023, 09:51 AM  
Seasonic Platinum 860W No Fan Spin by CallumUK
Started by CallumUK, 05-04-2023, 04:38 AM
4 responses
1,767 views
0 likes
 Last Post mrcliem
by mrcliem
06-20-2023, 05:01 AM  
LG 42PQ30R TV power supply does not work high voltage. (Liteon PS-7411-1-LF Rev. 2.1 by SoporteHR
Started by SoporteHR, 06-20-2023, 04:30 AM
0 responses
550 views
0 likes
 Last Post SoporteHR
by SoporteHR
06-20-2023, 04:30 AM  
Troubleshoting Seasonic KM3 based PSU, Advise please by mrcliem
Started by mrcliem, 06-20-2023, 04:09 AM
0 responses
445 views
0 likes
 Last Post mrcliem
by mrcliem
06-20-2023, 04:09 AM  
Anyone got a Scribd account to help with schematic ? by Dannyx
Started by Dannyx, 02-17-2021, 01:43 PM
8 responses
3,454 views
0 likes
 Last Post x0x0x
by x0x0x
06-16-2023, 11:40 AM  
HP Laserjet M1132 MFP Power Supply by asiart
Started by asiart, 06-13-2023, 02:14 AM
0 responses
1,623 views
0 likes
 Last Post asiart
by asiart
06-13-2023, 02:14 AM  
Please give me a schematic for Cooler master g750m by ceco87
Started by ceco87, 06-10-2023, 08:41 AM
0 responses
1,099 views
0 likes
 Last Post ceco87
by ceco87
06-10-2023, 08:41 AM  
Velodyne switching PSU ? by bianchi77
Started by bianchi77, 10-21-2019, 03:27 AM
25 responses
7,801 views
0 likes
 Last Post vladm74
by vladm74
06-09-2023, 03:22 AM  
Dell DPS 1200MB A pinout by fpsousa
Started by fpsousa, 01-20-2022, 09:15 AM
9 responses
3,660 views
0 likes
 Last Post PeteS in CA
by PeteS in CA
06-08-2023, 04:12 PM  
Kada 852d+ need schematic by ktmmotocross
Started by ktmmotocross, 02-01-2019, 08:37 AM
30 responses
10,285 views
0 likes
 Last Post cevat1
by cevat1
06-07-2023, 05:16 AM  
Trying to repair a HP Z800 850W PSU by Delta by BLinux
Started by BLinux, 10-19-2017, 01:06 PM
40 responses
17,636 views
0 likes
 Last Post hanspal1
by hanspal1
06-07-2023, 12:42 AM  
Help needed on unstable HP PS-4321-2HF power supply by mikey5791
Started by mikey5791, 09-26-2022, 07:56 PM
2 responses
1,743 views
0 likes
 Last Post harp
by harp
05-30-2023, 06:22 PM  
Cyberpower CP900EPFCLCD UPS not charging by luca773
Started by luca773, 05-20-2023, 09:39 AM
7 responses
1,053 views
0 likes
 Last Post petehall347
by petehall347
05-28-2023, 05:16 AM  
ZD-915 Mysterious Fault by axeman
Started by axeman, 09-25-2022, 09:53 AM
9 responses
1,643 views
0 likes
 Last Post eradiofan
by eradiofan
05-26-2023, 01:50 AM  
Purple Line Enduro Caravan Mover Fault by CptChronic
Started by CptChronic, 05-21-2023, 05:50 PM
9 responses
1,896 views
0 likes
 Last Post redwire
by redwire
05-25-2023, 08:20 PM  
Xbox 360 PSU failure diagnosis by nick122
Started by nick122, 05-21-2023, 06:26 PM
11 responses
1,009 views
0 likes
 Last Post CapLeaker
by CapLeaker
05-25-2023, 04:18 PM  
Edac/Drobo Power Supply Fuse by vletr
Started by vletr, 05-25-2023, 07:15 AM
2 responses
500 views
0 likes
 Last Post stj
by stj
05-25-2023, 07:44 AM  
AeroCool VP-550 : IC identification issue by bendeg
Started by bendeg, 04-03-2023, 07:06 AM
27 responses
3,869 views
0 likes
 Last Post bendeg
by bendeg
05-25-2023, 03:42 AM  
Blu-Ray player Harman Kardon BDS 277 : SMPS IC blown by RolandVossen
Started by RolandVossen, 05-23-2023, 02:16 AM
0 responses
1,045 views
0 likes
 Last Post RolandVossen
by RolandVossen
05-23-2023, 02:16 AM  
Bestec ATX0300F5WA - fast,or slow blow, fuse? by socketa
Started by socketa, 05-17-2022, 01:22 AM
13 responses
1,768 views
0 likes
 Last Post socketa
by socketa
05-20-2023, 07:00 PM  
What type of diode? Any ideas? by Electronic Santa
Started by Electronic Santa, 05-09-2023, 05:37 PM
12 responses
1,151 views
0 likes
 Last Post stj
by stj
05-20-2023, 06:39 AM  
Treadmill hit with power surge by xTomtom
Started by xTomtom, 05-09-2023, 08:06 PM
15 responses
1,982 views
0 likes
 Last Post stj
by stj
05-16-2023, 02:59 PM  
LF: dell HU275AM-00 board schematic by rayfloyd170
Started by rayfloyd170, 05-16-2023, 05:19 AM
0 responses
374 views
0 likes
 Last Post rayfloyd170
by rayfloyd170
05-16-2023, 05:19 AM  
Asus VG279QM Help identify ic SMD marking by tehmatix
Started by tehmatix, 05-11-2023, 02:59 AM
6 responses
864 views
0 likes
 Last Post tehmatix
by tehmatix
05-16-2023, 02:21 AM  
GP0812LD SMPS IC possible substitute? by dkneyle
Started by dkneyle, 05-11-2023, 10:30 PM
7 responses
1,101 views
0 likes
 Last Post dkneyle
by dkneyle
05-15-2023, 08:30 PM  
Corsair rm750 by Ns77510008
Started by Ns77510008, 05-14-2023, 07:07 AM
0 responses
490 views
0 likes
 Last Post Ns77510008
by Ns77510008
05-14-2023, 07:07 AM  
Identify replacement diode by jezzaaaa
Started by jezzaaaa, 05-09-2023, 11:26 PM
10 responses
1,049 views
0 likes
 Last Post stj
by stj
05-11-2023, 01:35 AM  
iMac 24'' Early 2009 A1225 Delta ADP-250AF Bad Caps by mitchw
Started by mitchw, 09-20-2021, 08:33 PM
5 responses
1,441 views
0 likes
 Last Post PeteS in CA
by PeteS in CA
05-10-2023, 12:21 PM  
Diablotek PSDA600 PSU by Topcat
Started by Topcat, 05-05-2023, 04:10 PM
9 responses
1,564 views
0 likes
 Last Post Dan81
by Dan81
05-10-2023, 08:40 AM  
Can High Side damage on an SMPS get across the Transformer to the Low Side? by Briesmith
Started by Briesmith, 05-06-2023, 09:36 AM
7 responses
1,144 views
0 likes
 Last Post Briesmith
by Briesmith
05-09-2023, 05:14 AM  
SCANGRIP POWERBANK 03.5782 - quiescent current draw 39mA by smile
Started by smile, 05-05-2023, 11:52 PM
0 responses
561 views
0 likes
 Last Post smile
by smile
05-05-2023, 11:52 PM  
ps4 supply no12v no 5vsb adp-160fr by totto210
Started by totto210, 05-04-2023, 12:54 AM
5 responses
1,023 views
0 likes
 Last Post totto210
by totto210
05-05-2023, 11:20 AM  
Why did my MOSFET blow up? by ohren
Started by ohren, 04-30-2023, 06:59 AM
8 responses
1,107 views
0 likes
 Last Post ohren
by ohren
05-01-2023, 05:22 PM  
Lumenia street light; LED power supply driver by 7dalibor7
Started by 7dalibor7, 02-13-2023, 09:45 AM
11 responses
1,646 views
0 likes
 Last Post CapLeaker
by CapLeaker
05-01-2023, 04:21 AM  
Mobility scooter charger dead 6240803 by DiamondTech61
Started by DiamondTech61, 04-10-2023, 11:01 AM
16 responses
1,728 views
0 likes
 Last Post lotas
by lotas
04-30-2023, 10:52 AM  
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