We Fix What Others Can't.
Professional diagnostics and repair for phones, computers, and consoles. Done right — not just done fast.
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What We Fix
- Cracked screens & broken glass
- Batteries & charging ports
- Water damage & data recovery
- No power / boot-loop
- Slow, freezing or won't boot
- Screen, keyboard & battery
- SSD upgrades & clean installs
- Virus removal & tune-ups
- HDMI ports & no signal
- Overheating & fan noise
- No power & error codes
- Stick drift & controllers
- Part selection for your budget
- Clean builds & cable management
- BIOS tuning & stress testing
- Upgrades & rebuilds
Built Different
We find the actual fault before ordering parts — saving you time and money.
Quality parts and proper technique, backed by a warranty on eligible repairs.
Most phone screens in ~1 hour. Console HDMI jobs in 24–48 hours.
If it can't be fixed or isn't worth it, we'll tell you — no pressure, no charge.
The Person Behind the Bench
HJ TechFix started with a simple idea — fix things right, be honest about it, and treat every device like it matters. With 7 years of hands-on experience, every skill here was self-taught, built repair by repair, device by device.
Being a quick learner meant constantly picking up new techniques — from the latest iPhone internals to PS5 board-level diagnostics. No shortcuts, no guesswork. Just real experience earned the hard way.
Based right here in Pittsburg, CA, this isn't a franchise or a chain — it's one dedicated technician who genuinely cares about getting your device back in your hands, working perfectly.
"Fixed my ps5 quickly and for a great price, it was dirty and needed replacement for hdmi. They cleaned it very well 5/5 service"
Quick Answers
Walk-ins are welcome during business hours. For mail-in jobs, a quick call or text first helps us be ready for you.
Simple phone repairs are usually under 1 hour. Console repairs take 1–2 hours. Laptop repairs might take 1–3 days depending on the issue.
We'll explain exactly why and help you decide the best next step. No pressure, no charge.
Yes! We accept mail-in repairs from anywhere. Fill out the form on the Mail-In page and we'll walk you through it.
Most repairs include a written 90-day warranty. If the same issue comes back within that window, we'll take care of it.
Service Area
We serve customers across the East Bay. Walk in or mail it in — we've got you covered.
Antioch — just 10 minutes away via Highway 4 or Somersville Rd. Many of our PS5 HDMI port and MacBook repairs come from Antioch customers looking for component-level work, not just a parts swap.
Bay Point — our closest neighbors, 5 minutes down the road. Bay Point walk-ins are often in and out within the hour for screens and batteries.
Brentwood & Oakley — a straight shot down Highway 4. Drop off on your commute through Pittsburg, or skip the drive entirely with our mail-in repair service.
Concord & Martinez — worth the drive for the repairs other shops turn away: micro-soldering, water damage recovery, and data rescue on devices declared "unfixable."
We Accept
Multiple payment options available. No hidden fees, ever.
Device Repairs
Every device gets a full diagnostic — so your repair lasts.
Repair Timeline
Here's exactly what happens from the moment you walk in to the moment you walk out.
Drop off your device. We log everything — model, issue, condition.
Full diagnostic to find the real fault — no guessing, no trial and error.
You get a clear quote. No work starts until you approve it.
Done with proper tools, quality parts, and attention to detail.
You test it before you leave. Warranty included on eligible repairs.
All Makes & Models
We work on all major brands — phones, laptops, and consoles.
What's Wrong?
Tap what's wrong on the phone below — or use the list. We'll send it straight to your free quote.
Before & After
Real jobs, real results. This is what we do every day.
The Lab
Not a mall kiosk. A dedicated diagnostics lab — we find the real problem, then fix it properly.
Lab Shots
The Tools
Professional-grade equipment — because the right tools make the difference between a guess and a fix.
Used for inspecting tiny solder joints, damaged board traces, and connector pins invisible to the naked eye. The camera feed lets us show customers exactly what we're seeing.
Precise temperature control means clean, reliable solder joints every time. No cold joints, no bridges, no damage to surrounding components. This is what separates us from heat-gun shops.
High-frequency sound waves blast corrosion and liquid residue out of every crevice on the board — far more thorough than isopropyl and a brush. Essential for water damage recovery.
Lets us power a board at controlled voltage and measure current draw. If a board has a short, the current spikes — telling us exactly where the fault is before we touch a single component.
Digital maps of every component on a logic board. We trace voltage lines, compare readings against spec, and isolate exactly which part has failed — without guessing or swapping random components.
Measures voltage, resistance, and continuity across the board. We test every rail and trace against known-good readings to find exactly where power is dropping or shorting out.
Repair Levels
Not all repairs are equal. Here's why some take longer and cost more — and why that's a good thing.
Standard part replacements — cracked screens, dead batteries, speaker/mic repairs. Quality parts, quick turnaround.
Charging ports, HDMI ports, headphone jacks — requires soldering skill and the right tools. Most shops skip these and tell you to buy a new device.
Logic board faults, short circuits, liquid damage, no-power diagnosis. Requires microscope, schematics, and power supply. The jobs most shops send to the trash.
How We Diagnose
No guessing. No random part swapping. Here's the exact process we run on every device.
Water Damage Protocol
Time is critical with liquid damage. The sooner you bring it in, the better the chances of a full recovery.
Data Safety Promise
Your device contains your life. We take that seriously.
We don't browse your photos, messages, or files. The repair stays focused on the hardware — your personal content is yours.
For water damage and no-power situations, our first priority is always protecting and recovering your data before attempting any repair.
You're always informed before anything is done. No surprises, no unauthorized work. You approve every step of the repair.
Every device is treated as if it were our own. Anti-static mats, proper storage, and careful handling throughout the entire repair process.
Mail-In Repair
Not local to Pittsburg? Ship your device in with a prepaid label — same quality service, sent right to your door.
Fill out the form with your device and the issue. We'll reply with a quote and a few quick details.
Once you're ready, we send a prepaid shipping label straight to your inbox — no trip to buy postage.
Power it off, wrap it securely with padding, print the label and tape it on, then drop it at any USPS location.
We diagnose, confirm the price with you, complete the repair, and send it right back to your door.
Verified Reviews
Nothing means more to us than a customer who walks out happy. Every review below comes straight from our Google profile, unedited — and we're grateful for each one.
"One of the best places to have your phone repaired. The customer service was exceptional. They not only offered a better price, but also completed the repair much faster than expected. I truly appreciate their professionalism and service. The best place to come and fix your phone. I will always be here. If you wanna fix your computer or PS5, this is your spot."
"Helped me fixed my PS5 HDMI port. I thought it will take a couple of days, but he finished it within couple of hours. His price was affordable as well. If you need any micro soldering work done, this is the place to go to. I will definitely recommend him to anyone. Professional, honest, good customer service 👍."
"I came in with a phone that had gone through the laundry, yet had recovered except for the camera. Hilal quoted me a very reasonable fee to open the phone for a close look. In fifteen minutes he determined that the camera module would need replacing, which was more expensive than the whole phone was worth. Excellent troubleshooting skills. Very clear explanations of what he found and good reasons for not doing the repair. I tried to hand him his quoted fee but he refused to charge me, because the phone was not worth fixing. This is service above and beyond. I'll be back!"
"Fixed my ps5 quickly and for a great price, it was dirty and needed replacement for hdmi. They cleaned it very well 5/5 service"
"This guy fix my phone on the fly. Super professional and friendly. My phone had an issue turning off at the lock screen and he fixed it in about 10 minutes, he got all 26 screws In-N-Out like a boss. Reasonable rates. I totally recommend him I've been to kiosks at the mall mess up old phones, he is first level support, my new phone guy."
"Hilal has recently helped me out twice. Once with my laptop and today he installed a new battery in my iPhone that was not holding a charge. I was able to walk in, he had in done in no time and his prices are very reasonable."
Find Us
Terms & Conditions
When you hand us your device — whether you walk in or ship it — you're trusting us with something important. These terms exist to make sure we're both on the same page about what that means. Take a few minutes to read through them.
Independent Repair Shop
HJ TechFix is an independent, privately owned repair shop based in Pittsburg, CA. We are not affiliated with, authorized by, or endorsed by any device manufacturer — including but not limited to Apple, Samsung, Google, Sony, Microsoft, Nintendo, or any other brand.
Being independent means we are not bound by manufacturer repair restrictions, which allows us to offer more flexible, affordable, and often faster service than authorized centers. However, it also means our repairs are not manufacturer-sanctioned, and in some cases a repair performed by us may affect your existing manufacturer warranty.
By bringing your device to HJ TechFix, you acknowledge that we are an independent third-party repair provider and accept that any manufacturer warranty implications are your responsibility to understand before proceeding.
Parts & Components
We use high-quality third-party parts for most repairs. These parts are sourced from vetted suppliers and meet or exceed industry standards for performance and durability. In most cases, they are functionally equivalent to the original components and are what we stand behind with our 90-day warranty.
OEM (Original Equipment Manufacturer) parts are available upon request. If you prefer original manufacturer parts for your repair, just let us know before work begins. OEM parts may carry a higher cost and longer lead time due to sourcing, and we'll give you a clear estimate before ordering anything.
We will not use parts you supply yourself unless explicitly agreed upon in advance. Customer-supplied parts are not covered under our warranty — see Section 07 for details.
Repair Risks
Every repair carries some level of risk — that's the nature of working with complex electronics. We want to be upfront about that rather than hide it in fine print. Devices with pre-existing damage, prior repair attempts, corrosion, or age-related wear can behave unpredictably once opened.
Specific risks to be aware of: iPads and other glued-screen devices require prying to access internal components — there is a small but real chance of screen damage during this process. On Apple devices, Touch ID and Face ID are hardware-paired to the motherboard; these features may stop working after certain repairs, regardless of how carefully the job is done. Liquid-damaged devices are especially unpredictable — corrosion continues to spread even after drying, and components that tested fine initially may fail later.
We take every precaution with your device. But by leaving it with us, you acknowledge that unforeseen damage is a possibility and that HJ TechFix cannot be held liable for pre-existing conditions or failures that arise from complications outside our control.
Quotes & Estimates
We do our best to give you an accurate quote upfront, but some devices don't reveal the full picture until they're open and on the bench. If we discover additional issues during the repair that affect the cost or scope, we'll stop and contact you before going any further.
Nothing changes without your approval. Your original quote stays valid for the original scope of work. You're never on the hook for something you didn't agree to.
90-Day Limited Warranty
Every eligible repair we complete comes with a written 90-day warranty. If the same issue we fixed comes back within 90 days, bring it in and we'll make it right — no charge. The parts we install are also covered for 90 days from the date of service.
This warranty covers the specific repair performed. It does not extend to unrelated issues, new problems that develop independently, software-related failures, or any damage that occurs after the device leaves our shop.
What the Warranty Doesn't Cover
We want to be clear about the boundaries so there are no surprises. Our warranty does not apply to:
- ▸Repairs using customer-supplied or third-party parts not sourced by HJ TechFix
- ▸Software issues — virus removal, OS reinstalls, app errors, or system corruption
- ▸New hardware added to the device after our repair — this can cause conflicts and voids our warranty on the original fix
- ▸Drop damage, liquid damage, or any physical damage that occurs after the repair
- ▸Symptoms unrelated to the original repair — for example, if we fixed your charging port and your camera stops working months later, those are separate issues
- ▸Devices that have been opened, modified, or tampered with after leaving our shop
If something goes wrong and you're not sure whether it's covered, just call us. We'd rather talk it through than have you wonder.
Warranty Service
If your device has an issue within the 90-day window that falls under our warranty, bring it back in and we'll take care of it. We do ask that you give us the opportunity to re-examine and re-repair the device before we discuss any refund — that's how we confirm whether the issue is actually related to our work.
If we determine the issue is covered and we're unable to resolve it, a refund may be issued for the original repair amount — minus any applicable diagnostic or repair attempt fees. Refunds are not issued for unrelated issues or for damage that occurred after the device left our shop.
Repair Attempt Fee
Certain repairs — particularly motherboard work, data recovery, and devices that have already been opened by someone else — require significant time and expertise even when the outcome is uncertain. For these jobs, we charge a diagnostic and repair attempt fee of $40–$100 if the repair cannot be completed successfully.
We'll always let you know upfront if a repair attempt fee applies before we start. You'll never be surprised by a charge you didn't know was possible.
Turnaround Time
We work fast — most phone screen replacements are done within an hour. More involved repairs like console HDMI ports, water damage, or board-level work typically take 24–48 hours. If parts need to be ordered, we'll give you a realistic timeframe before we commit to anything.
Repair times quoted on our site or in conversation are based on experience and are good-faith estimates — not guarantees. If something comes up that changes the timeline, we'll reach out to you right away.
Mail-In Repairs & Shipping
For mail-in customers: pack your device well — ideally in its original box with adequate padding. Devices that arrive damaged due to poor packaging are the sender's responsibility. We are not liable for damage that occurs during transit to us.
We strongly recommend purchasing shipping insurance when sending your device. If you don't request insurance and something happens in transit on the way back to you, that loss falls on you, not us. If you send us a pre-paid label without insurance, we'll use it as-is — we can't add coverage to a label we didn't purchase.
Once your repair is done and approved, if a warranty issue comes up, ship it back to us and we'll cover the return shipping once the repair is confirmed.
Your Data & Privacy
Your personal data is yours. We don't look through your photos, messages, emails, or any other personal content. Our work is purely hardware-focused — we're fixing the device, not interested in what's on it.
That said, we strongly recommend backing up your device before any repair. Hardware work always carries a risk of data loss — especially on heavily damaged devices. We take precautions, but we cannot guarantee data integrity and are not liable for data lost during a repair.
For water damage and no-power situations, we prioritize data safety first and will flag any data concerns before proceeding with the repair.
Call or text before you drop off your device — we'd rather answer your questions upfront.
Privacy Policy
Your privacy matters to us. This page explains what information we collect, how we use it, and what rights you have — written in plain language, not legal jargon.
What Information We Collect
We collect information in two ways: details you give us directly, and a limited amount of technical data collected automatically when you visit this website (described under "Cookies & Analytics" below). Information you provide directly includes:
- ▸Contact form submissions — your name, email address, phone number, and the message you send us
- ▸Mail-in repair forms — your name, address, phone number, and device/issue description
- ▸Walk-in service — your name and phone number for work order tracking and repair status updates
We do not collect payment card information directly — all payment processing is handled through secure third-party providers. We do not collect data from your device (photos, files, messages, or accounts).
Cookies & Analytics. This website uses Google Analytics to understand how visitors use our pages so we can improve them. Google Analytics sets cookies and automatically collects limited technical information — such as your approximate location, device and browser type, the pages you view, and basic actions you take on the site (for example, submitting a form or tapping our phone number). We use this only to measure and improve the website. We do not use it to personally identify you, and we do not sell it or share it for advertising. You can block or delete cookies in your browser settings, and you can opt out of Google Analytics entirely using Google's opt-out browser add-on.
Do Not Track. Some browsers can send a “Do Not Track” signal. Because there is no common industry standard for how to respond to these signals, our site does not currently respond to them differently — our data collection is limited to the basic analytics described above regardless of this setting.
How We Use It
Simple — we use your information to do the job you asked us to do:
- ▸To respond to your inquiry or quote request
- ▸To contact you about your repair status, updates, or when your device is ready
- ▸To process and fulfill mail-in repair orders
- ▸To follow up on warranty claims within the 90-day window
That's it. We don't use your contact information for marketing emails or newsletters unless you specifically ask us to.
We Do Not Sell Your Information
We do not sell, rent, trade, or share your personal information with third parties for their marketing purposes. Ever. We are a local repair shop — your information stays with us and is used only to service your device and communicate with you directly.
Your Device & Your Data
When your device is in our hands, we only access what's necessary to perform the repair — typically the hardware itself. We do not browse your photos, messages, emails, apps, or any personal content stored on the device.
We recommend backing up your device before dropping it off. While we take every precaution, data loss can occur during hardware repairs and we cannot be held responsible for data that is lost as a result of the repair process.
California Residents — CCPA Rights
If you are a California resident, the California Consumer Privacy Act (CCPA) gives you specific rights regarding your personal information:
- ▸Right to Know — You can ask us what personal information we have collected about you
- ▸Right to Delete — You can request that we delete your personal information from our records
- ▸Right to Opt-Out — We don't sell your data, so there's nothing to opt out of
- ▸Right to Non-Discrimination — Exercising any of these rights will not affect the quality of service you receive from us
To exercise any of these rights, contact us directly at 925-421-4523 or visit us in store.
How Long We Keep Your Information
We retain customer contact and repair records for up to 2 years for warranty tracking and service history purposes. After that, records are deleted. You can request deletion at any time before that by contacting us directly.
Changes to This Policy
If we ever update this policy in a meaningful way, we'll update the date at the top of this page. We're a small local shop and our practices are straightforward — we don't anticipate significant changes.
Call, text, or stop by — we're happy to explain exactly what we have and how to have it removed.