Top

FAQ and Troubleshooting

INSTALLATION

  1. View our Installation Guide to see the illustrations of the steps below.
  2. Place the Seasonic power supply into the correct place provided in the computer case and secure it to the back panel with the four mounting screws that were provided in the accessory bag of the packaging.  Do not over tighten the screws.
  3. Depending on the type of your computer case, correct mounting of the power supply in most cases will result in the fan side top cover facing the mainboard. This does not necessarily apply to all types of cases. (How to correctly position the power supply)
  4. Mainboard Connection:
    1. DO NOT force the connector into place; the connectors are “keyed” so they can only fit one way. Make sure the connector lock is secure.
    2. Connect the power supply end of the 24/20 Pin convertible connector to the appropriate receptor on the power supply unit.
    3. Connect the power supply end of the 24/20 Pin convertible connector to the appropriate receptor on the power supply unit.
    4. Connect the +12 V P4 connector and the EPS +12 V connector, if applicable.
    5. If your system requires dual EPS +12V connectors, please connect the 12-pin end of the second CPU 8-pin connector into the appropriate 12-pin receptor on the power supply unit. Then connect the mainboard end of this 8-pin connector to the mainboard.
  5. Check out our video guide on how to connect each connector.
  6. The hybrid fan control selector switch, located on the modular cable panel side of the power supply unit can be set to either “I” - S2FC (Normal Fan Control without Fanless Mode) or “O” - S3FC (Hybrid Silent Fan Control with Fanless Mode).
    1. The Normal Fan Control setting (the “I” position, or when the fan control button is PRESSED) enables the fan to rotate continuously in Silent Mode and Cooling Mode, depending on the system load.
    2. The Hybrid Silent Fan Control setting (the “O” position, or when the fan control button is NOT pressed) enables the power supply to run in Fanless Mode up to 20 % (± 5 %) of the maximum rated load. When the load further increases, the S3FC fan control will keep regulating perfect cooling through the Silent Mode or Cooling Modes.

Seasonic recommends a UPS with a pure sinewave output; however, a high quality simulated sinewave UPS from a reputable manufacturer could also be a possible solution to be used with our power supplies.

High-powered graphics cards are usually outfitted with two (or three) PCIe power connector slots. Seasonic prefers the use of two (or three) separate PCIe cables to connect these cards to your power supply.

Should you require additional assistance, please contact Seasonic Support.

The fan control button can be found on the back of the back of the FOCUS PLUS power supply, next to the power switch. The image here illustrates how to select different fan control modes to suit your need.

DO NOT press the button if you wish to include the Fanless Mode, which means the fan in the power supply will not spin when the power supply is under light loads. Press the button if you wish to have the fan spin at all times, even at lower loads.

TROUBLESHOOTING

Have you installed your power supply correctly? For instructions please follow this link: If your installation was correct and the power supply unit still fails to function properly, please go through the below checklist.

  1. Re-check whether the AC cord is properly connected to the wall outlet and the power supply unit.
  2. Re-check and all mainboard and peripheral connectors and make sure that they are tightly connected.
  3. Check to make sure if the AC power source is On.
  4. Check if the AC On/Off switch on the back panel of the power supply unit in the “I” (On) position.

Please note: To reset the power supply you need to turn it Off first (On/Off switch to “O” position) and then after waiting a short while, turn it back on again (On/Off switch to “I” position) If your power supply still does not function properly, you can check its functionality by yourself with a simple ‘paperclip’ test by yourself. For further instructions please follow our Power Supply Jump Start Guide below.

Some Seasonic Consumer power supplies ship with a simple Power Supply Tester included in the box to help users quickly check whether the power supply is working properly.

How to check your power supply?

  1. For your safety, first turn off the power supply by setting the I/O switch on the back panel to the “O” stand.
  2. Unplug the AC power cord from the power supply.
  3. Disconnect all peripherals and devices from the power supply.
  4. Plug the AC power cord back into the power supply and make sure that the AC power is coming directly from the wall outlet (do not use power strips, extension cables or splitters).
  5. Before you start testing, connect both the 18-pin and 10-pin connectors of the motherboard cable to the power supply.
  6. Attach the Power Supply Tester to the end of the 24-pin motherboard connector. There is a notch on the Tester that fits directly into the notch on the 24-pin connector.
  7. Make sure that the fan control switch on the power supply is set to Normal Mode (S2FC). (In Hybrid or Fanless Mode (S3FC) the fan will not turn.)
  8. Turn on the power supply by setting the I/O switch to the “I” position.
  9. If you see the power supply fan spinning then you know that your power supply is working.

Please note: This is a very basic method to test power supplies; for a more precise examination, please contact our RMA services.

When you are having problems with your setup and you want to rule out whether your power supply is faulty or not, you can perform the following simple test to make sure that your power supply is operational.

  1. For your safety first turn off the power supply by setting the I/O switch on the back panel to the “O” stand.
  2. Unplug the AC power cord from the power supply.
  3. Disconnect all peripherals and devices from the power supply.
  4. Plug the AC power cord back into the power supply and make sure that the AC power is coming directly from wall outlet (do not use power strips, extension cables or splitters).
  5. Before you start testing, connect both the 18-pin and 10-pin connectors of the motherboard cable to the power supply.
  6. Make sure that the fan control switch on the power supply is set to Normal Mode (S2FC). (In Hybrid or Fanless Mode (S3FC) the fan will not spin.)
  7. Regardless whether your 24-pin motherboard cable has all black or colored wires, please use a paper clip or a piece of wire to create a short circuit by connecting the pins shown on the photo illustrations.
  8. If you have a Power Supply Tester that comes with the PRIME Ultra series, then attach it to the end of the 24-pin motherboard connector. There is a notch on the Tester that fits into the notch on the 24-pin connector. NOTE: DO NOT use the PSU Tester on other series.
  9. Turn on the power supply by setting the I/O switch to the “I” position.
  10. Check to see if the power supply fan is running. If it is, then your supply is probably good.

Please note: This is just a very basic method to test power supplies; for a more precise examination, please contact our RMA services.

PRIME, PRIME Ultra, FOCUS PLUS, FOCUS, Snow Silent, Platinum, Platinum Fanless, X, G, S12G, M12II Evo, M12II, and TFX Series.

For models that support DC to DC converter design, short the pins highlighted below on the 24 pin connector.

S12II and ECO Series

For models that support Double Forward design, short the pins highlighted below on the 24 pin connector.

Many end users use the BIOS voltage readings as a gauge of the performance of the power supply and when they find this reading to be too low, they mistakenly think that the PSU is faulty. The voltage readings in the BIOS, however, are not always accurate.

At times when the system has stability issues, at first sight the symptoms can seem to indicate a problem with the power supply, but the motherboard or the motherboard’s VRM can also be the cause of the instability.

To troubleshoot which component is at fault, testing the PSU with another motherboard or connecting the motherboard to another power supply could immediately show which component does not function properly.

In other instances, when the end user has access to and knows how to use a voltmeter, testing the power supply in this manner will give very accurate voltage reading results.

The built-in anti-surge feature on some motherboards is known to produce false-positive readings while monitoring the output voltages of the power supply. Seasonic power supplies have their own integral safety features to protect all the components against electrical damage. When your system shuts down due to this problem in the motherboard, please follow these steps:

  1. Update the BIOS of your motherboard to the latest version available.
  2. Check the power supply’s output readings in the BIOS.
  3. If all seems to be normal then turn OFF your motherboard’s anti-surge protection.
  4. To make sure that everything runs properly, you can check your benchmark scores (Futuremark, OCCT, etc.)

The power supply is a “pull” technology, which means that the unit only provides the amount of power that is demanded by the mainboard and components.

  • If there is a mainboard malfunction, the power supply will not turn on.
  • If there is a peripheral component malfunction, the power supply will not provide power to that particular component.

Please always make sure that the power rating of your unit is sufficient for your entire system.

If the PC does not boot up after the power supply has just been replaced, Seasonic recommends clearing the CMOS memory of the motherboard to reset the motherboard to its factory default state in order to clear the settings related to the previous power supply.

Listed below are a few common methods to clear the CMOS in this situation; however, Seasonic suggests you consult motherboard’s user manual to reset the CMOS.

Reseat the CMOS battery

  1. Unplug the power supply from the AC mains.
  2. Locate the CMOS battery, usually a button cell, aka, watch battery, on your motherboard.
  3. Remove, then reconnect the battery.
  4.  

Use a clear CMOS jumper

  1. Unplug the power supply from the AC mains.
  2. Locate the jumper on the motherboard; it is often labelled CLEAR CMOS.
  3. Follow the instructions on the motherboard’s user manual to short the pins using the plastic jumper.
  4. Plug in the AC power, then turn the computer ON to make sure the BIOS has been reset.
  5. Turn OFF the computer, and set the jumper back to its original position.

WARRANTY AND SUPPORT

We typically respond to support tickets submitted through the contact form or offline chat messages within 48 hours via the email address you provided. Please check your spam folder regularly, and mark our email as "NOT SPAM." We apologize for the inconvenience.

Head to Warranty Policy / RMA to start your RMA process.

If you have any questions, the fastest and most efficient way to contact the Seasonic Technical Support Team is by sending an email, by filling out our Contact Form or via Chat Support.

Mining cryptocurrency requires good and reliable power supplies (PSU) that can handle the heavy load of 3, 4 or even more graphics cards (GPU) at the same time. However, according to Intel’s ATX Design Guide, a normal PC power supply’s intended usage is to power PC systems.

Should you consider using your Seasonic PSU for mining nevertheless, to minimize the incidence of certain issues, we recommend adhering to the following:

  • Make sure to always use the cables provided with your PSU. Any cables from any other PSU manufacturers may be dangerous or may cause damage to your system. Should you require additional assistance, please contact Seasonic.
  • Make sure to strictly follow our recommendations about the number of PCIe cables that you can plug into your PSU. Using the power supply without a CPU connection does not fall in line with the manufacturer’s intended usage, and may void the warranty. If your model is not described on our recommendations page, please contact us.
  • For safety reasons and to avoid any potential issue with the cables, please make sure to strictly follow our recommendations about how to connect high power GPU’s (with power consumption exceeding 225 W).
  • We strongly advise against powering your GPU riser cards with any Molex or SATA cables. While the PCIe connector supports the +12 V via 3 pins, both Molex and SATA connectors can only power the +12 V output via 1 pin. Molex or SATA connectors are not designed to power riser cards and in certain instances damages from such a setup will not be covered under the warranty.

We value all our customers and we fully stand behind our power supplies when they are used in work stations, gaming rigs or office computers, in accordance with their intended purpose. Consequently, any application that does not follow our recommendations for proper usage will result in diminished access to our support and RMA services, whereas some fees may be charged to service products that would otherwise be repaired free of charge.

We have been notified, in limited instances, where some issues may occur when a FOCUS power supply is used in conjunction with certain high power consumption GPU or brand of VGA cards. If you experience possible compatibility issues, please check the below information and contact us for further assistance:

FOCUS PLUS & ASUS GTX970 STRIX: In very limited instances black screen may occur under heavy VGA usage. Current testing showed that certain VGA cards may emit higher than normal ripple when under heavy load and using a modified PCIe cables with enhanced shielding resolved the issue.

FOCUS PLUS & Vega 56/64: For units with serial numbers before January 2018, in rare instances, possible system shutdown may occur when GPU is under heavy load. This is possibly caused by higher than normal peak current emitted by this particular range of GPU's when under heavy load triggering the PSU’s internal protection safety.


Notes:

  • All Seasonic power supplies meet the requirements of the Intel Power Supply Design Guide.
  • For more information, please review the graphics cards’ PSU recommendations.

LAN Parties and other and various other PC related gaming events are gaining in popularity and although Seasonic has no program to provide sponsorship to all these events, every year we select a few larger events that we sponsor on a case-by-case basis.

If you would like to be considered for sponsorship, please fill out our web form and our Team will get in touch with you regarding your request.

Conditions of sponsorship

  1. We only accept the properly filled out online application form, your emails will not be considered.
  2. You will be informed via e-mail whether your application has been approved.
  3. You will be requested to send us feedback in the form of statistical data and good quality images following the event to document how the sponsorship items provided by Seasonic were used,
  4. Please note that your submitted data and images might be used for our marketing purposes.
  5. All Seasonic sponsored products are provided to your organization free of charge and you are not allowed to sell, resell or exploit the sponsored items sent to you by Seasonic for commercial purposes in any way.
  6. Please apply for sponsorship at least a month before your event to give us enough time to process your request. If you do not leave enough time for processing, your request might automatically be denied.

If you have any further questions, please contact us at info@seasonic.com
Please complete the online application form and our Team will get back to you as soon as possible to inform you whether your sponsorship request was granted.

Day-by-day we receive many sponsorship requests from people all over the world for special modding projects. Although Seasonic does not have a regular program to provide free hardware to enthusiastic hobbyists or professional modders, occasionally we support extremely talented modders who can show a unique build or a new take on builds which will also put the Seasonic brand name in a good light. If you think you are one of these especially talented people, please fill out the form below and our team will consider your request for sponsorship.

Conditions of sponsorship:

  1. We only accept the properly filled out online application form, emails written via the web form on the Contact page will not be considered.
  2. You need to demonstrate experience in modding. We usually do not support first-time modders.
  3. You need to have an online presence with a substantial number of followers on Facebook, Twitter, YouTube, forums or other social media channels.
  4. In case you are selected for sponsorship, we expect that you to send feedback to us regularly about your progress. You need to have a substantial online presence where a large number of people can view your modding process.
  5. Seasonic reserves the right to use of all images of your mod for marketing purposes.

Please complete the application form and our Team will get back to you as soon as possible to inform you whether your sponsorship request was granted.

If you have any further questions, please contact us at info@seasonic.com

Seasonic power supplies are equipped with strong safety features to protect the unit and the system components attached to it against electronic failures. If any of these rare occurrences sets in, the power supply will turn off. Should your power supply shut down unexpectedly please seek technical assistance.

Over Temperature Protection

This protection feature monitors the operating temperature of the entire power supply and if it becomes too high it switches off the unit.

Over Current Protection

If the load on any of the output rails exceeds the specified limit, the power supply automatically switches off.

Over Power Protection

If the output rating (maximum load limit) of the power supply is insufficient for the system’s requirements, this protection function is activated to switch off the power supply.

Short Circuit Protection

Should there be an output short-circuit, this protection feature immediately shuts down the power supply in order to safeguards it and all system components against electrical damage by.

Over Voltage Protection

If the voltages increase above a certain preset tolerance value on any of the output rails, the power supply automatically shuts down.

Under Voltage Protection

If the voltages fall below a certain tolerance value on any of the outputs, the power supply automatically switches off.

This missing pin is not a defect of your power supply. In the past, this place in the main power connector was to support the –5 V output. Nowadays this output is no longer necessary for modern PC's. According to Intel’s Power Supply Design Guide however, this pin should be kept empty to comply with the specifications.

BUYER`S GUIDE

Seasonic’s new fan control concept is the best choice for silent PC enthusiast. Seasonic believes power supply fans should not rotate as fast as they could but should be in operation as little as possible to preserve energy and create the most silent possible working environment.

The most important advantages and benefits of this Seasonic-patented fan control system are:

  • Reducing noise without increasing temperature
  • Extending fan life by eliminating unnecessary rotations
  • Optimizing heat dissipation at all times

A good power supply lasts several years and comes with a variety of connectors that should cover all your needs. Modular cables provide more flexibility in usage and connectivity and at the same time enable you to manage your cables neatly inside the computer case. Less unnecessary cables to tuck away in the case also mean that the ventilation of your system becomes less obstructed. A properly ventilated system will protect your components from overheating and will extend their lifetime.

Seasonic endeavors to produce power supplies that meet the current market standards. Since the announcement of the Haswell processors in mid-2013, most of Seasonic's power supplies have been designed to be compatible with the processors. The list below details Seasonic's recent products that comply with the standard. For more specific product information, please contact our Technical Support.

Haswell Compatible Current Consumer Products

  • PRIME Ultra Series
  • PRIME Series
  • FOCUS PLUS Series
  • FOCUS Series

Non-compatible Current Consumer Products

  • S12II Series
  • M12II EVO - 620 W, 520 W

Haswell Compatible Discontinued Consumer Products

  • PRIME Series
  • Platinum Series
  • X-Series Series
  • G-Series Series
  • S12G Series
  • M12II EVO - 750 W, 850 W

Non-compatible Discontinued Consumer Products

  • M12II Series
  • M12 Series