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How do I know if my PCB hard drive is bad?

7 Symptome eines Leiterplattenfehlers auf der Festplatte
1.Burning Smell
2.Heat up Too Quickly
3.Drive Loads Slowly
4.PC Poor Performance
5.Strange Clicking Sounds
6.Drive Disappears in Booting
7.Stop Spinning up.

How do I know if my PCB hard drive is bad?
Why is the hard drive the C drive?

Why is the hard drive the C drive?

On computers running Windows or MS-DOS, the hard drive is labeled with the C: drive letter.
The reason is because it is the first available drive letter for hard drives. The computer reserves A: and B: drive letters for the floppy disk drive and removable media, such as tape drives, even if these devices are not installed in the computer. As you install other drives and create new partitions, they are assigned to other drive letters after C, such as D, E, F, G, etc.

Can a physically damaged hard drive be repaired?

The truth is, regardless of the type of damage – mechanical or electronic – it will be anything but a ten-minute job.
However, if you are confident that you have what it takes to get this job done correctly, be prepared. You are going to invest a fair amount of time and effort.

Can a physically damaged hard drive be repaired?

Ihr Bestes HDD-Platine Partner


Venture offers HDD PCB that suits your desired electronic devices or products. HDD PCB functions as electricity is being passed between different Komponenten that let the hard drive to operate. If you have these HDD PCB you can notice that the PCB is a green or blue colored board on the rear end of the device.

So if you are looking for an HDD PCB that perfectly suits your device or components, you can contact venture. We offer different types of HDD PCB including its related products that can reach your needs. HDD PCB of Venture is always updated with the latest designs and functions for your upgraded device applications.

HDD PCBs are supported mechanically and connect the electrical components by using tracks, and other features. Venture products are always in the best quality for you to benefit and satisfy. HDD PCB of Venture is made up of valuable materials considering that HDD PCB and its related products are in lasting operation.

Your Leading HDD PCB Supplier in China

Venture is your primary HDD PCB supplier in China and can also be worldwide. We have been sourcing various component parts specifically HDD PCB in different countries for a long time. Venture HDD PCB performs in an excellent way and stability. HDD PCBs usually have  DC +12V/±10% voltage needed depending on its specific model. Venture HDD PCB models usually have capacity of 20.0GB-40.0GB. HDD PCB operates in 5-55 degree celsius operating temperature.


Venture creates a different set of HDD PCB for you to choose the perfect one for your operating devices. You can always check out HDD PCB Ventures for more options, designs and functions you needed. These HDD PCB of Ventures are a classic depository device for computers. When it operates, the disks are spinning faster than are coated by magnetic material. Venture HDD PCB has two big advantages, its cost and its storage size. HDD PCB has a high operation level.


If you are looking for a very massive storage capability that is more cost conscious and doesn’t demand the minor speed enhancement, you should choose HDD PCB in Venture. This HDD PCB performed in two ways, it may be transactional or subsequent performance. Venture introduces you to the most useful and worthy device component and parts mainly HDD PCB.

Venture is always ready to assist and supply your desired types of HDD PCB. Sourcing the best HDD PCB and other related items are our expertise. Venture considers one stop solutions for all HDD PCB demand. Venture makes sure that you will be satisfied and have the advantage by using our HDD PCB in your own use or even in a business. We are glad to be part of your improving business as a supplier of high-quality HDD PCB.


Venture provides the best quality services especially supplying upgraded  HDD PCB. Whenever you need your applicable  HDD PCB, just communicate with us. We have operating service 24/7. We are your trusted supplier of worthy  HDD PCB.

If you need an upgraded  HDD PCB, feel free to contact us!

HDD PCB: The Ultimate FAQ Guide


If you have any question about HDD PCB, then read this guide.

It covers everything about HDD PCB, including design, features, specifications, components, etc.

So, if you want to learn more about printed circuit boards, read this guide.

What Is A HDD PCB?

HDD refers to hard disk drive which is a memory storage device that employs mechanical parts in data storage and access.

A HDD PCB allows the flow of electricity between vital drive constituents in enabling functionality.

You find semiconductor components on a HDD PCB employed for data holding and retrieval.

A HDD PCB also includes parts regulating the spindle speed, the head ratio and the voltage of the voice coil.

The HDD PCB communicates with the main processor through signal interpretation that makes data transfer possible.

When you open a hard disk drive, you can identify the HDD PCB with the green solder mask color.

A Hard Disk Drive PCB

A Hard Disk Drive PCB

How Does A HDD PCB Compare To An SSD PCB?

An SSD is a solid state drive which differs from the hard disk drive by how you store and access data.

Rather than employ mechanical components in data storage and access, the SSD PCB utilizes flash memory chips.

Other areas of comparison are as follows:

  • You find SSD PCBs offer you better battery usage since they are non-mechanical thus employing less power when functioning.
  • Additionally, since they lack mechanical parts, SSD PCBs offer you better shock resistance than HDD PCBs. This you way, you are less likely to lose data when you drop your device employing an SSD PCB.
  • The SSD performs read and write operations faster than a HDD PCB especially for huge files. This is down to the make-up where data access is via flash memory and not read head movements.
  • You can achieve a lifespan of over three thousand write cycles when using the SSD PCB. Like the HDD PCB, the larger the storage capacity of an SSD the longer is its lifespan.
  • You can have memory drives supporting capacities between 128 GB and 2TB employing either a HDD PCB or an SSD PCB. When comparing drives with similar capacities employing either PCB, you find one with SSD PCB costs more.

A Solid State Drive SDD PCB

A Solid State Drive (SSD) PCB

What Features Define A HDD PCB?

A HDD PCB like any other printed circuit board employs features such as the substrate, conductive layer, solder mask and silkscreen.

  • Das Substrat of a HDD PCB typically provides mechanical support and utilizes epoxy, polymers and/or glass-fibre. You need certain dielectric qualities for your substrate for good board performance.
  • Das leitend Schicht allows you to electrically connect the components on your HDD PCB. Copper finds common use as the conductive layer due to its low cost but silver and gold are other capable options.
  • Das Lot Maske" shields the conductive tracks from corrosion via oxidation and formation of solder bridges during the soldering process. A solder bridge connects separate conductive elements forming an unwanted connection that can damage the board.
  • Das Siebdruck is a layer you typically furnish over the component side to highlight parts and features of the board. You find the silkscreen on a HDD PCB useful in helping you identify the attached components.

What Processes Do You Undertake During HDD PCB Fabrication?

There are several processes that you undertake when fabricating a HDD PCB. These include:

Formation Of Substrate

The substrate is an insulating layer providing electrical isolation to the board’s conductive layer. You form a substrate layer from resin material, fiberglass and even polymers which mechanically supports the HDD PCB.

Removal Of Excess Copper

In making your conductive trace, you employ a flat copper film from which you extract the desired trace pattern. You find the etching process useful in this regard, where you employ chemical solutions, plasma or laser.

In order to remove excess copper, you print a mask in the pattern of your desired trace. The mask is resistant to the etching agent allowing you to retain the copper in the desired pattern underneath.

Laminating Layers

During HDD PCB fabrication, you have to join the substrate and conductive layers to form one structure called a laminate. In this process, you find the use of a binding agent called prepreg necessary.

Using an alignment basin, you position the layers with prepreg before subject them to a heated press. The prepreg melts holding the layer surfaces together upon application of pressure.

Drilling Process

Das drilling process allows you to make holes for different uses such as component attachment and making paths between layers. You can have two types of holes in your HDD PCB: plated and non-plated.

Plated holes are conductive and can connect components while also providing paths for electrical or thermal signal transfer. Non-plated holes lack conductivity finding use as board locators.


The assembly process involves attaching components to your HDD PCB track allowing for effective signal transfer resulting in achieving function objective. You can attach components manually or through automated process depending on the components types of through-hole or surface mount.

Fig 3- Drillling Is An Important Part Of The Drilling Process

Drilling Is An Important Part Of The Fabrication Process

Application Of Solder Mask And Silkscreen

The solder mask is a protective layer that shields the underlying copper from oxidation and formation of solder bridges.

When the copper layer interacts with oxygens, it can corrode due to oxide formation hampering its efficiency in electrical signal transfer.

The silkscreen layer allows you to identify features on the HDD PCB such as components, test points and designators.

You employ contrasting colours for the solder mask and silkscreen to ensure clarity and visibility.

How Do You Conduct Etching When Making HDD PCBs?

The etching process involves the removal of conductive material from a flat film to reveal the desired board trace pattern. You can employ several techniques in conducting etching for your HDD PCB as follows:

Etching Using Chemicals

In chemical etching you employ acidic and alkaline chemical solutions such as cupric chloride and ammoniacal.

You apply a resist over the desired pattern and the chemical solution eats away parts of the conductive material.

Etching Using Plasma

Plasma etching utilizes a gas mix plasma stream to selectively remove parts of the conductive material not desired.

The gas mix contains chemical radicals that react with the metal surface in a dry and clean process with reduced contamination.


Here, you utilize powerful laser beams to cut out the conductive film in the desired trace patter for your HDD PCB.

Due to the equipment used, you find laser etching is costly but also quick and clean with high accuracy levels.

Fig 4- You Can Select Any Of The Above Etching Techniques For Your HDD PCB

You Can Select Any Of The Above Etching Techniques For Your HDD PCB

When Designing A HDD PCB What Factors Do You Consider?

When designing a HDD PCB, there are several factors you consider including the following:

Board Layout

You can present your HDD PCB in different ways such as with different layer stacks and component composition.

Your board layout determines the performance of the HDD PCB concerning aspects such as interference and high frequency use.


Signal integrity focuses on your HDD PCB’s response to factors such as characteristic impedance and track properties.

When designing your HDD PCB, you can conduct simulations to establish the signal integrity of your board.

Power Integrity

Sometimes you may need to employ hard disk drives in high power applications such as mining of cryptocurrency.

It follow that you need to design HDD PCBs with the capacity to handle large current inputs and thermal outputs.


A breakout strategy is essential in the verification of a HDD board’s breakout process and routing involving several pins.

Breakout strategy guides decision making in tackling power integrity issues and micro-via bracket use.

Fig 5- Board Type Is One Of The Factors To Consider When Designing

Board Layout Is One Of The Factors To Consider When Designing

What Aspects Define The Quality Of A HDD PCB’s Conductive Path?

Your HDD PCB’s conductive path allows electrical communication between the board components.

While copper is the most common material used as a conductor on HDD PCBs, gold and silver are alternatives.

The following aspects define a good conductive trace:

  • Good electrical conductivity: A conductive trace with excellent electrical signal transfer exhibits little or no signal losses. Signal losses hamper performance efficiency resulting in extracting less usefulness than intended.
  • Good Thermal Resistance: A conductive trace with good thermal resistance builds up less thermal energy during electrical signal transfer. This prevents development of thermal strain which can result in HDD PCB failure.
  • Kostengünstig: You can achieve a conductive trace at low cost when it is easily available or easily converted into wire form. Workability allows you to employ less material during conversion saving on the overall cost of the HDD PCB.

How Can You Tell Your HDD PCB Is Faulty?

Fig 6- Faulty HDD PCB Will Exhibit Noticeable SIgns

Faulty HDD PCB Will Exhibit Noticeable SIgns

There are several factors that can contribute to the failure of your HDD.

When this happens, your HDD PCB will exhibit certain signs that inform you on an existing fault.

Diese umfassen:

HDD Loads Slowly

A HDD typically works at a provided speed which ensures the read and write process is effective.

However, you can experience lags in HDD activity such as during startup with error warnings signifying a problem.

Indiscriminate Temperature Rise

A HDD PCB produces heat during operation which you find duly dissipated by the board design.

The heat production, however, occurs gradually thus maintaining performance efficiency.

When your HDD PCB heats up quickly resulting in an indiscriminate rise in temperature, it could potentially signify a fault.

Strange Clicking Noises

When your HDD PCB fails, it can manifest as a clicking noise not unlike the usual smooth disc spinning. You find this can result from a mechanical failure caused by communication breakdown with the HDD PCB.

Device Develops Performance Issues

Where your device employing the HDD is a computer, you can tell the PCB is faulty when you develop performance issues.

Your computer can fail to boot or the HDD can be inaccessible preventing you from storing or retrieving data.

HDD Fails To Spin

The working of a HDD is such that a head touches on a spinning disc during the read or write process. When your HDD disc fails to spin, it could be an indication of a PCB problem.

Burning Indicated By Smoke Or Smell

Sometimes you can experience a short circuit in your HDD PCB which results in burning of board features or components. Burning manifests through smoking and/or emission of an odour resulting from the burning material.

In Fabricating a HDD PCB What Materials Can You Utilize?

You can fabricate a HDD PCB by employing different types of material as follows:


Teflon is a widely accepted brand name for polytetrafluorethylene which is common in HDD PCBs used in high frequency devices.

Teflon has unique properties such as reduced dielectric constant, high water resistance, high frequency support and high glass transition temperature.


There are different variants of polyimide material you can employ in your HDD PCB.

These include pure polyimide which lacks additives such as brominated film retardants, filled polyimides which include a filler, and low-flow polyimides.

Qualities of polyimide material allowing their use in HDD PCBs include excellent flexibility and tensile strength, thermal stability and chemical resistance.

A PCB Made From Polymide

A PCB Made From Polyimide


You find use of FR-4 Material in HDD PCBs most common due to their low cost and outstanding properties.

FR-4 material consist of epoxy and glass fiber with flame retardant quality, low dielectric constant, and high temperature of glass transition.

Other qualities include: incredible strength to weight ratio, thermal durability, high tensile and flexural strength, and low water absorption.



What Devices Utilize HDD PCBs?

You find HDD PCBs in hard disk drives which you employ for storage of non-volatile memory.

The PCB in a HDD directs the functions of the drive in read and write procedures.

You can have HDDs internally in computers or employ them externally as standalone devices.

When used in computers, HDDs customarily serve as the principal device for data storage.

External HDDs are useful in backing up data or for storing long term data not in frequent use.

What Are A HDD PCB’s Performance Influencers?

You find the following factors influence the performance of a HDD PCB:

  • Stromstöße: Power surges involve transient electrical current inflows that exceed the intended input value. A power surge can damage your HDD PCB in an unprotected device.
  • Übermäßige Hitze: Your device employing a HDD PCB can succumb to extreme heat especially in the absence of thermal management strategies. Heat build-up can cause thermal strain on the PCB resulting in board failure.
  • Electrical Supply Issues: An inconsistent supply of power to your device employing HDD PCB can hamper performance and cause board damage. Ensuring your HDD receives consistent power supply is key for effective performance.
  • Grobe Behandlung: Electrical components such as the HDD PCB need careful handling to avoid physical damage or electrostatic interference.
  • Manufacturing Flaws: A HDD PCB with a manufacturing flaw can fail to function if the flaw is central to board performance. For instance, a detached component can cause board failure.

What Are The Main Components In A HDD PCB?

A HDD PCB has the following major component’s central to its functionality:

  • MCU: The Micro Controller Unit (MCU) on a HDD PCB controls all processes and functions in a hard drive. Some of the functions under MCU control are: the spin cycle, read and write process, signal conversion and data transmission.
  • VCM Controller: The Voice Coil Motor controller is the primary power unit on a HDD PCB. It can tolerate high temperatures and functions to control head and disk movement in the drive.
  • TVS Diode: The Transient Voltage Suppression diode is a safety component guarding the HDD PCB from power input surges. A power input surge burns the component causing shorting of the ground and power connection.
  • Flash-Speicher: The function of a HDD is dependent on the HDD PCB extraction of the drive’s unique code stored in the flash. Typically, you furnish the flash chip alongside the MCU for easy access and retrieval.
  • Non-Volatile Memory Chip: The non-volatile memory chip in a HDD PCB is usually a DDR SDRAM with a defined capacity. The capacity of this memory chip defines the drive’s capacity with storage space up to two terabytes.
  • Erschütterungssensor: The purpose of shock sensors is to detect heavy impact and in theory protect the PCB and drive from damage. Shock sensors work in communication with the Voice Coil Motor

Components Of A HDD PCB

Components Of A HDD PCB

How Is The Data Storage Process In A HDD PCB?

A HDD PCB stores data in binary form employing the drive’s magnetic layer for holding data when writing or reading.

Data organization is in tracks subdivided into sectors similar to an athletic track.

The HDD PCB keeps tabs on filled and empty sectors assigning entered data to free sectors.

Writing of data involves an electrical current transfer to the heads via a magnetic field.

The read/write process converts the current input into a digital signal (or vice versa) in the form of 0 or 1.

What Can Cause A HDD PCB To Fail?

You can attribute the failure of a HDD PCB to any of the following:

  • Altern: Aging of HDD PCBs in electronic devices is inevitable especially after achieving the maximum read/write cycles. You can mitigate aging by replacing components where possible or purchasing a new HDD PCB.
  • Poor Quality Components: Components with doubtful credentials can cause board failure. For instance, such components can draw more power than required or cause shorts.
  • Flaws in Component Design: Flaws in component design can come in various was causing HDD PCB failure. You can position components such that they are liable to cause interference or negatively impact with thermal management aspects.
  • Environmental Factors: The HDD PCB can fail owing to excessive moisture in the environment of use, high temperatures and even dust.

Is Data Loss Inevitable On HDD PCB Failure?

You can lose data when your HDD PCB fails especially when failure results from damage and not a connection issue.

Recovering such data is difficult given the unique matching of individual hard disk drives with their code.

You can attempt recovery if you can find a genuine brand-specific replacement which is usually not the case.

Even so, the recovery process entails use of expensive equipment in a highly controlled environment inaccessible to many.

Is It Possible To Repair A Damaged HDD PCB?

You can repair a HDD PCB depending on the extent of damage.

Where damage extends to the corruption or loss of the adaptive data, successful repair is virtually impossible.

However, where you have individual component failures, you can find a matching board and use it to replace damaged components.

Repair of components such as the BIOS chip is futile due to board incompatibility.

Do HDD PCBs Employ Connector Orientations?

Connector orientations on HDD PCBs allow you to transfer electrical signals within and without the board.

A connector orientation entails a connection system with multiple pins in an oblong formation.

There are two common orientations of such namely: cable-to-board or board-to-board.

With the latter connection, you can develop different orientations such as parallel and edge to edge.

What Surface Finishes Are Compatible With A HDD PCB?

A Oberflächenbeschaffenheit der Leiterplatte augments the solderability of your HDD PCB while also protecting underlying copper from corrosion.

The board’s component composition, volume, cost and environmental factors influence the choice of surface finish.

Some of the common surface finishes are:

Bleifreies HASL

This surface finish replaces lead in the tin-lead solder combination with environmental friendly elements such as copper, nickel or germanium.

Lead is harmful to the environment and considered a restricted substance by RoHS.

You dip the HDD PCB in the solder before using hot air to level it out. You achieve excellent solderability with this surface finish and it comes at low cost.


Here, you chemically deposit a layer of tin over the copper by immersing in a solution containing tin ions. You should however solder your HDD PCB within thirty days of applying the finish to avoid tarnishing.

You achieve excellent flatness with this finish and at a relatively low cost. Additionally, this surface finish is excellent for small components as you find on a HDD PCB.

Chemisches Nickel-Immersionsgold (ENIG)

You furnish a gold layer over a nickel layer in this surface finish type forming a strong and durable surface.

While costly, you can achieve a long shelf life ranging in years using this finish with an incredibly flat surface.

Why Is It Important To Test A HDD PCB?

One of the most critical stages of HDD PCB manufacture is testing.

Testing allows you to identify flaws and problems on your HDD PCBs ignored during the manufacturing process.

These issues could lead to costly failures and faults when eventually employed in drives in devices.

Testing methods guarantee that the HDD PCB and components are completely functional reducing risk of failure and maintaining customer satisfaction.

Having testing protocols in place during the production period allows you to catch problems and difficulties sooner rather than later.

To ensure that the final HDD PCB is of the greatest quality, use of meticulous and extensive testing techniques is necessary.

Fig 10- Testing A HDD PCB Is A Critical Stage In Manufacturing

Testing A HDD PCB Is A Critical Stage In Manufacturing

What Are The Industry Standards Guiding HDD PCB Manufacture?

Industry standards are important to ensure the production of high-performing HDD PCBs that are safe and reliable.

You find this is ensured through the provision of articulate procedures for the production process in the form of standards.

Some of the available standards in HDD PCB manufacture are:

  • IPC 2221: Institutes general design and performance requisites for HDD PCBs and other types of component mounting structures.
  • IPC-4101C: Specifies the specifications for laminate or prepreg base materials, commonly used with rigid HDD PCBs. It also discusses the materials utilized, as well as their dimensions and qualities.
  • IPC 4761: Encompasses the design criteria for via protection to assure quality, dependability, and manufacturability.
  • IPC-6012B: Specifies the certification and performance requirements for rigid HDD PCB fabrication. It specifies standards for solderability, structural integrity and conductor spacing.
  • IPC 7351: Postulates the footprint and land pattern criteria for a HDD PCB’s SMT components. Manufacturers of components employ these criteria when developing solder land patterns to guarantee solderability and dependable electrical connections.
  • IPC J-STD-001: Specifies the materials, techniques, and other requirements for high-quality soldered interconnections on a HDD PCB. It centers on process regulation and specifies requirements for electronic devices employing such.

For any questions or inquiry about HDD PCB, Kontaktieren Sie jetzt Venture Electronics.

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