Call or Text · (714) 422-6959
Electric bike hub motor, controller, and wiring harness on a workbench with a multimeter
The Original Placentia E-bike Repair, established 2023

7+ years hands on experience · Placentia, CA · By appointment

Electric vehicle repair,
without the guesswork.

Specialized repair and diagnostics for eBikes, scooters, and eMotos.

Controller problems. Motor faults. Battery issues. Wiring nightmares. Throttle failures. Performance problems. I diagnose and repair the electrical and mechanical systems behind today's electric bikes, scooters, and e motos.

Experience

When the problem isn't obvious, experience matters.

A modern electric vehicle is a system. The battery, BMS, controller, motor, throttle, display, sensors, wiring, connectors, communication lines, and charging system all interact — and a fault in one place often shows up somewhere else.

I specialize in finding the actual source of the problem rather than replacing parts until something works. Component level troubleshooting, electrical testing, and 7+ years of practical repair experience on these systems.

"Good diagnostics can save you from replacing expensive parts that were never actually bad."

7+

Years experience

$75

Hourly labor

1 hr

Minimum

By appt.

Placentia, CA

REAL CUSTOMER GOOGLE REVIEWS

5.0

★★★★★

5 reviews on Google

View on Google

★★★★★

“Kevin is professional, Top tier service am really impressed he helped me find best resolution for my St3 pro ultra comfort scooter”

Chris CruZ · Google review

★★★★★

“Excellent E-Bike Assembly Experience w/ Placentia E-Bike Absolutely fantastic experience from start to finish! The entire process was professional, smooth, and hassle-free. The attention to detail and quality of workmanship were top-notch. My new Magician e-bike was assembled perfectly, with everything properly adjusted, checked, and ready to ride. It’s refreshing to deal with someone who takes pride in their work and genuinely cares about customer satisfaction. Excellent communication, great service, and an overall outstanding experience. I couldn’t be happier and would highly recommend their services to anyone needing an e-bike assembled. Five stars all the way! Justin C”

Justin Curtis · Google review

★★★★★

“Took my scooter here got the problem solved quickly and easily. I would definitely bring my scooter or E Bike back to Kevin anytime.”

Greg Smith · Google review

★★★★★

“Kevin is very knowledgeable and genuinely cares about doing things right. He takes the time to figure out the problem, explains what actually needs to be fixed, and won’t try to sell you on things you don’t need. It’s surprisingly hard to find someone local who really specializes in e-bikes, so having a reliable repair shop nearby is such a huge plus. Definitely recommend!”

Kacie Cook · Google review

★★★★★

“Highly recommend Kevin! He helped me with a custom setup when I upgraded from a 48V to a 72V battery, including mounting everything properly and fitting/routing the wiring so the finished product looked completely OEM. He also helped me find a custom display and mounted my custom headlight, taillight, and turn signals. Everything came out clean, professional, and exactly how I wanted it. Kevin is extremely knowledgeable, transparent, and easy to work with. You can tell he takes pride in his work and knows what he’s doing. I’ll definitely be coming back for any future service, upgrades, or customizations.”

Kevin Liao · Google review

Services

What I work on

From basic repairs to difficult electrical problems, I work on the systems that keep your electric vehicle moving.

Electrical Diagnostics

  • Electrical fault diagnosis
  • Intermittent electrical problems
  • No power / no start conditions
  • Error codes
  • Voltage and continuity testing
  • System troubleshooting

Controllers

  • Controller diagnosis
  • Controller replacement
  • Controller setup
  • Troubleshooting
  • Performance controller upgrades
  • Configuration and tuning

Motors

  • Motor diagnosis
  • Motor replacement
  • Hall sensor troubleshooting
  • Motor wiring
  • Performance motor upgrades
  • Motor / controller compatibility

Batteries

  • Battery diagnosis
  • Battery system troubleshooting
  • Battery replacement
  • BMS related diagnosis
  • Charging problems
  • Battery connection issues

Wiring & Electrical

  • Wiring repairs
  • Connector replacement
  • Damaged wiring and shorts
  • Loose / intermittent connections
  • Custom wiring and harness work
  • Component integration

Throttles & Controls

  • Broken throttles
  • Throttle replacement
  • Brake cutoff issues
  • Display issues
  • Switch problems
  • Control wiring

Upgrades & Performance

  • Controller upgrades
  • Motor upgrades
  • Battery upgrades
  • Wiring improvements
  • Performance tuning
  • Component compatibility

General Repair & Maintenance

  • Regular maintenance
  • Mechanical repairs on electric vehicles
  • Component replacement
  • Troubleshooting
  • Setup and adjustments
  • General technical issues

Don't see your problem listed?

Call and explain what's happening. If it's an electric vehicle problem, there's a good chance I can diagnose it or point you in the right direction.

Call or Text (714) 422-6959

From the garage

Customer Bikes

A look at electric bikes and custom builds that have come through the Placentia garage for diagnostics, repair, and upgrades.

Process

Diagnose first. Repair with a reason.

01

Tell me what's happening

Call and describe the symptoms, recent changes, modifications, error codes, or failures.

02

Diagnose the system

The vehicle is tested systematically to identify the actual source of the problem.

03

Explain the findings

You hear what failed, why it failed, and what repair or replacement options make sense.

04

Repair / upgrade

Complete the agreed repair, replacement, wiring work, tuning, or upgrade.

"I don't believe in throwing parts at a problem."

Electric vehicle wiring harness and connectors being tested with a multimeter

Why this shop

Not your average bike shop.

Plenty of bicycle shops are excellent at bicycle mechanics. Modern electric vehicles are part bicycle, part motorcycle, and part electrical system. When the problem involves controllers, battery management, motor signals, wiring, sensors, or system configuration, specialized knowledge matters.

Specialized knowledge

7+ years working hands on with electric vehicle systems and components.

Real diagnostics

Troubleshoot the system instead of blindly replacing expensive components.

Quality work

Repairs are approached carefully and methodically.

Straightforward communication

You'll know what was found and what the repair involves before unnecessary work is performed.

Local service

Garage based service in Placentia, California.

By appointment

Focused one on one service rather than a crowded retail repair counter.

Labor

Straightforward labor

Labor is billed at $75 per hour with a 1 hour minimum. Parts and replacement components are additional.

Most repairs begin with diagnosis. Once the problem is identified, you'll know what is needed before moving forward with additional repair work.

You're paying for diagnostic experience, technical knowledge, and careful workmanship — not just time spent turning a wrench.

Call or Text for diagnosis & scheduling

Labor rate

$75 / hour

1 hour minimum

Parts additional

Diagnosis before repair

By appointment · Placentia, CA

Vehicles

What comes into the garage

Fat tire electric bike on a repair stand in a dark garage workspace

eBikes

Commuters, fat tire bikes, performance eBikes, custom builds, and modified electric bicycles.

Detail of a high performance electric scooter deck and stem

eScooters

Electric scooters ranging from commuter platforms to higher performance machines.

Blacked out electric moto lit by a single amber light in a garage

eMotos

Electric motorcycles, pit bikes, dirt bike conversions, and high performance eMoto platforms.

Custom or modified build?

That's exactly where specialized electrical troubleshooting becomes especially useful.

Call or Text about your bike

Service area

Local electric vehicle repair in Placentia

Located in Placentia, California, this is a garage based service operating by appointment. Call before coming by so we can make sure someone is available.

1072 Henrietta Circle

Placentia, CA 92870

(714) 422-6959

Serving Placentia · Yorba Linda · Fullerton · Brea · Anaheim · Orange · La Habra · Chino Hills · Rowland Heights and surrounding Orange County areas

Coverage
PlacentiaYorba LindaFullertonBreaAnaheimOrangeLa HabraChino HillsRowland Heights

Garage based service in Placentia, CA — by appointment, not a walk-in storefront.

FAQ

Common questions

Yes. This is a garage based service and repairs are handled by appointment. Call (714) 422-6959 to discuss your issue and schedule service.

Let's figure out what's wrong.

Strange noise? No power? Won't charge? Cuts out under load? Throttle stopped working? Upgrading your setup and not sure what's compatible? Call and explain what's happening.

Call or Text (714) 422-6959

Placentia, CA · By appointment