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Question posted by fullmesh on May 20th, 2012

Repair Manual For Hp Dx5150 Small Form Factor Pc

How do I correct the following: System refuse to come on when switched off for more than 20 hours. But only starts if one consistently which it on several times. please how do i correct this problem

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Answer #1: Posted by freginold on May 21st, 2012 11:11 AM
This answer was accepted by the poster of the original question.
freginold

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Hi, you can find all of the available manuals and guides for this model here, including the parts map and service reference guide:

https://support.hp.com/us-en?openCLC=true

You can also find repair and replacement videos here:

http://h20464.www2.hp.com/csr.htm?prodSeriesId=447468

It sounds like you may have a bad power supply unit, if the computer refuses to boot up.  It could also be a motherboard problem, but that would be a lot harder to troubleshoot. 

Related HP Dx5150 Manual Pages

HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 6

... Microtower (MT 5-1 5.1.2 Small Form Factor (SFF 5-2 5.2 Electrostatic Discharge Information 5-2 5.2.1 Generating Static 5-3 5.2.2 Preventing Electrostatic Damage to Equipment 5-3 5.2.3 Personal Grounding Methods and Equipment 5-3 5.2.4 Grounding the Work Area 5-4 5.2.5 Recommended Materials and Equipment 5-4 5.3 Operating Guidelines 5-5 iv 361685-001 Service Reference Guide, dx5150
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 8

Contents 7 Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.1 Preparation for Disassembly 7-1 7.2 External Security Devices 7-2 7.2.1 Cable Lock ...14 7.8.5 External 3.5-inch Drive 7-17 7.8.6 Primary Hard Drive 7-19 7.9 Front I/O Devices 7-21 7.10 Power Switch Assembly 7-22 7.11 Speaker 7-23 7.12 Chassis Fan 7-24 7.13 Battery 7-25 7.13.1Type 1 Battery ... Guide, dx5150
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 52

... Care, and Disassembly Preparation 5.1.2 Small Form Factor (SFF) 5.2 Electrostatic Discharge Information A sudden discharge of static electricity from your finger or other conductor can work perfectly throughout a normal cycle. The device may not appear to alter device parameters or melt silicon junctions. 5-2 361685-001 Service Reference Guide, dx5150 Networks built into many integrated...
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 95

... power-on state, voltage is plugged into an active AC outlet. Turn off the computer before servicing a unit. 6. Small Form Factor (SFF) Chassis Adherence to it , noting its position and routing. Disconnect the power cord from the electrical outlet and then..."). 2. using the wrong screw in the "Standby" or "Suspend" modes. Service Reference Guide, dx5150 361685-001 7-1
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 96

... the chassis. 7-2 361685-001 Service Reference Guide, dx5150 As shown, there are two acceptable methods for added security, HP recommends that you use the method shown on the left where the cable lock penetrates both methods work, for using the cable lock. Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.2 External Security Devices 7.2.1 Cable...
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 97

Small Form Factor (SFF) Chassis 7.2.2 Padlock A padlock may also be used with a security cable to secure the computer to the computer chassis. Removal and Replacement Procedures- A padlock may be used by itself to secure the access panel to a fixed object. I Service Reference Guide, dx5150 361685-001 7-3
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 98

... from the electrical outlet. 2. Slide the computer access panel 2 back about 1.3 cm (0.5 inch), then lift it into the locked position. 7-4 361685-001 Service Reference Guide, dx5150 When installing the access panel, press down on the top of the computer 1. 3. Small Form Factor (SFF) Chassis 7.3 Computer Access Panel 1. Removal and Replacement Procedures-
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 99

Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.4 Front Bezel 1. Remove the computer access panel (Section 7.3, "Computer Access Panel"). 3. To reinstall the front bezel, reverse the removal procedure Service Reference Guide, dx5150 361685-001 7-5 Pull up on the three release tabs 1 on the top of the bezel, then pull the front bezel away from...
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 100

Small Form Factor (SFF) Chassis 7.5 Front Drive Bezels 1. Remove the front bezel (Section 7.4, "Front Bezel"). 4. Removal and Replacement Procedures- Remove the computer ... bezel 2. To install a bezel or a bezel blank, reverse the removal procedure. 7-6 361685-001 Service Reference Guide, dx5150 Prepare the computer for disassembly (Section 7.1, "Preparation for Disassembly"). 2.
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 101

... module into the socket nearest the preinstalled module, and install the modules following the numerical order of personal injury from hot surfaces, allow the internal system components to its full upright position. 5. Match the notch on the memory socket. Small Form Factor (SFF) Chassis 7.6 Memory Modules Ä CAUTION: The memory module sockets have gold...
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 102

...fully inserted and properly seated. Make sure the latches are installing a card for the first time continue with step 6. Remove the computer access panel (Section 7.3, "Computer Access Panel"). 3. ... down into the socket, ensuring that secures the PCI slot covers by sliding it up . 5. Small Form Factor (SFF) Chassis 6. If you want to the expansion cards. 4. Remove the slot cover by ...
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 103

...an expansion card from a PCI expansion socket, hold the card at each end and carefully rock it from the socket. Small Form Factor (SFF) Chassis 7. Removal and Replacement Procedures- Lift the expansion card straight up then pull it in the chassis when installing...components in toward the center of the chassis to secure the card. Service Reference Guide, dx5150 361685-001 7-9
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 104

...a 1.44-MB diskette drive is installed instead. To verify the type and size of internal components. Small Form Factor (SFF) Chassis ✎ If you must replace it is configured with a metal slot cover or ...removing the hard drive. Failure to run Computer Setup. 7-10 361685-001 Service Reference Guide, dx5150 If you do so will result in this slot, you may cause the system to overheat...
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 105

...of the chassis. Service Reference Guide, dx5150 361685-001 7-11 Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.8.2 Cable Management ...power cable. A sharp bend can break the internal wires. Follow these cables. ■ Do not bend any cable sharply... damage the wires. ■ Some flat ribbon cables come prefolded. The cable clip 4 is stamped from major heat...
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 106

... cage, power supply, or computer cover to lay properly by themselves. Small Form Factor (SFF) Chassis ■ Never bend a SATA data cable tighter than a 30 mm (1.18 in a failed power supply. 7-12 361685-001 Service Reference Guide, dx5150 Pulling on the system board, always follow these steps: 1. When removing the power supply power cables from...
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 107

Small Form Factor (SFF) Chassis 7.8.3 Cable Connections Cable Power Supply Power Supply Power Supply Power Supply Power Supply Power Supply Power Supply Cable Diskette drive ... (Black) IDE1 (Blue) CD_IN1 (Black) CPU_FAN CHASSIS_FAN F_P1 JUSB1 (Yellow) AUD1 (Black) SPKR COM1 SATA 1 (Blue) SATA 2 (White) JTPM1 Service Reference Guide, dx5150 361685-001 7-13 Removal and Replacement Procedures-
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 119

...Refer to the Troubleshooting Guide for this computer provides power to HP/Compaq, their authorized partners, or their agents. Ä CAUTION: Static electricity can be extended by briefly touching a grounded metal object. 1. Prepare the computer for disassembly (Section 7.1, "Preparation for Disassembly"). 2. Small Form Factor (SFF) Chassis 7.13 Battery The battery that you are discharged of...
HP Business Desktop dx5150 Series Service Reference Guide, 1st Edition - Page 123

... new heatsink, remove the protective covering from the socket 3. Service Reference Guide, dx5150 361685-001 7-29 To install a new processor: 1. Secure the locking lever... can find the latest system ROMPaq on the Web at: http://h18000.www1.hp.com/support/files. Remove the computer access panel (Section 7.3, "Computer Access Panel...Small Form Factor (SFF) Chassis 7.15 Processor 1.
Desktop Management Guide (3rd Edition) - Page 15

...Desktop Management Guide Creating a Bootable Device Supported USB Flash Media Device Supported devices, such as an HP Drive Key, have a preinstalled image to simplify the process of the computer's USB ports and remove all other USB storage devices except USB diskette drives. 3. Microtower, Small Form Factor... computers can be used does not have : ■ an HP Business Desktop dx5150 Series -
Desktop Management Guide (3rd Edition) - Page 17

...from a USB flash media device. The computer will be changed in the system that have : ■ an HP Business Desktop dx5150 Series - Otherwise, a bootable diskette must have SCSI, ATA RAID or SATA drives attached, turn off the computer... to your USB flash media device. 13. Desktop Management Guide 12. Microtower, Small Form Factor or Slim Tower. Desktop Management Guide www.hp.com 13

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