Hands-on repairs
Real amplifier faults fixed step by step.
Audio Amplifier Repair Course
Amp dead? Stuck in protect?Fix your amplifier yourself.
Learn to diagnose and repair home stereo, car, PA and guitar amplifiers step by step: dead amps, blown fuses, protection mode, hum and buzz, distortion, dead channels, output transistors and power supplies, safely.
For audio lovers, musicians and DIYers. Beginner to Master in one course.
Get instant access — $29.99 USD
One-time payment · No subscription · Instant access after checkout
4
Levels
2
Bonuses
2
Reference guides
- Secure checkout
- Instant access
- 7-day guarantee
Find your problem
What is your amplifier doing?
Pick the symptom and see where the course teaches you to find the cause.
No power or blows fuses
- Completely dead
- Blows the fuse at power-on
- Power light only, no sound
- Turns off after a few minutes
Where the course covers it
Power supply, rail and fuse diagnosis in Level 2, plus the Car Audio Amplifier Repair & Protection Mode add-on.
See the full course package →Stuck in protection mode
- Protect light on
- Relay clicks but no sound
- Shuts down at volume
- One channel trips protection
Where the course covers it
Protection circuits, DC offset and output stage testing in Level 2 and Level 3.
See the full course package →Hum, buzz or noise
- Constant hum
- Buzz that changes with volume
- Hiss or popping
- Noise only on one channel
Where the course covers it
Grounding, filter capacitors and noise tracing in Level 3.
See the full course package →Distorted or weak sound
- Distortion at low volume
- Weak or thin sound
- Sound cuts in and out
- Crackling controls
Where the course covers it
Bias, driver stage and signal tracing in Level 3.
See the full course package →Missing channel
- Left or right channel dead
- Channel much quieter
- Channel distorts only
- Intermittent channel
Where the course covers it
Channel-to-channel comparison testing in Level 2 and Level 3.
See the full course package →Runs hot or shuts down
- Heat sink too hot to touch
- Thermal shutdown
- Burning smell
- Fan not working
Where the course covers it
Bias current, thermal paste and output transistor checks in Level 3 and Level 4.
See the full course package →
Why people switch
The guessing game vs. the diagnose-first way
Paying the shop & guessing
- Repair shop quotes of $100 to $300
- Weeks waiting for your amp
- Buying a new amp for a cheap part
- No idea what actually failed
- Throwing away a fixable amplifier
With this course
- A safe, step-by-step method
- Test rails, transistors and capacitors yourself
- Match each symptom to the right stage
- Know when a repair is worth it
- Keep your favorite amp playing
One repair shop visit can cost more than this entire course.
The method
Follow the evidence, not guesses
Every repair follows the same safe, repeatable sequence used by professional amplifier technicians.
- 01Make it safeUnplug, discharge filter capacitors and use a current limiter.
- 02ObserveLights, relay clicks, fuses and smells all point to a stage.
- 03Simple firstFuses, connections, controls and inputs before the boards.
- 04TestRails, DC offset, bias and transistors with a multimeter.
- 05RepairReplace the confirmed parts and fix the cause, not only the fuse.
- 06VerifyBring it up slowly, set bias and run a burn-in test.
One progressive course
Four levels. One clear path from beginner to master.
Four levels from your first safe power-up to component-level repairs.
Beginner
Level 1 · How an amplifier works
Safety, amplifier stages, tools, reading symptoms and safe opening of the chassis.
Professional
Level 2 · Power supply & protection
Transformers, rectifiers, filter capacitors, rails, fuses, protection relays and DC offset.
Expert
Level 3 · Output stages & noise
Output transistors and MOSFETs, bias, driver stage, hum, buzz, distortion and dead channels.
Master
Level 4 · Class D, car amps & business
Class D and car amplifiers, component-level repair, sourcing parts and pricing repairs.
What you learn
What is included in the Audio Amplifier Repair Course
Everything you need to understand, diagnose and repair audio amplifiers.
Find the bad stage
Match each symptom to the stage that causes it.
Power problems
Dead amps, blown fuses and protection mode.
Every amp type
Home stereo, car, PA, guitar and Class D.
Clean sound again
Remove hum, buzz and distortion.
Safety and limits
Capacitor safety and when a repair is not worth it.
- Everything inside, topic by topic
- Power supplies
- Transformers
- Filter capacitors
- Voltage rails
- Fuses
- Protection relays
- DC offset
- Bias
- Output transistors
- MOSFETs
- Driver stage
- Class A/B
- Class D
- Car amplifiers
- PA amplifiers
- Guitar amps
Your amplifier repair toolkit, explained: what to buy first and how to use it safely.
Get the course — $29.99 USD
Secure checkout · Instant access after payment
Your package
Bonus 1Included Bonus 2Included Complement 1Included Complement 2Included
Everything you get — in one purchase
The full course plus two bonuses and two complementary guides, all in one purchase.
Audio Amplifier Power Supply Troubleshooting Guide
Transformers, rectifiers, capacitors and rails tested the right way.
Common Audio Amplifier Failures and How to Fix Them
The faults you will see most often and the fix for each one.
Real-World Audio Amplifier Repair Checklists
Step-by-step checklists to use at the bench on every repair.
Complete Guide to Audio Amplifier Components
Every component, what it does and how to test and replace it.
All 4 levels, 2 bonuses and 2 complementary guides are included in your $29.99 USD one-time payment.
Is it for you?
Who this course is for
Audio lovers
Fix your stereo amp instead of paying a shop or replacing it.
DIY and electronics hobbyists
Learn real amplifier repair with a safe method.
Musicians and DJs
Keep your PA, guitar amps and powered speakers working.
Side hustlers
Repair and refurbish amplifiers for friends, family or resale.
Built-in safety
Technical safety comes first
Amplifiers run on mains power and store energy in large capacitors. This course builds safe habits into every procedure.
Unplug and discharge
Filter capacitors can hold a dangerous charge after unplugging.
Current limiter
Power up repaired amps through a dim-bulb or current limiter.
Protect yourself
Eye protection when soldering and testing.
Protect your speakers
Check DC offset before connecting speakers again.
Heat and soldering
Use a stand and good ventilation when soldering.
Know your limits
Some repairs are not worth the parts or the risk.
Educational material. Always unplug the amplifier and discharge filter capacitors before working inside it, and power up repairs through a current limiter. If you are unsure, do not open the power supply.
7-day money-back guarantee
Try the course with confidence. If it is not right for you, email us at info@planetebooks.co within 7 days of your purchase with your order number and we will refund you, as long as the course materials have not been opened, accessed or downloaded.
To protect our digital content, the guarantee applies only to unopened purchases. Once any part of the purchase has been opened, accessed or downloaded, the sale is final. This does not affect any rights you may have under the consumer laws that apply in your location.
Your order
Complete Audio Amplifier Repair Course package
All 4 levels, 2 bonuses and 2 complementary guides, plus exclusive add-ons you can include right now.
Audio Amplifier Repair Course
- 4 levels, Beginner to Master
- 2 bonuses + 2 reference guides
- Instant digital access
$29.99
Add exclusive bonuses to your order
Optional add-ons, only $14.99 each. Check a box to add it.
Audio Amplifier Repair Course$29.99
Total today$29.99
- Secure checkout
- Instant access after payment
- 7-day guarantee on unopened courses
Secure checkout
Your payment is processed through our encrypted checkout.
Payment options at checkout
Available payment methods are shown at checkout and may vary by country and device.
Instant access by email
Right after payment, your access link is sent to the email you enter at checkout.
Learn at your own pace
Study on your phone, tablet or computer, on your own schedule.
Questions
Frequently asked questions
How do I access the course after purchase?
Right after your payment is approved you get instant access. Your access link is sent to the email address you use at checkout and is also shown on your order confirmation page. If you do not see the email, check your spam and promotions folders.
Do I need experience?
No. Level 1 starts from zero with safety, tools and how the amplifier works. Each level then builds on the previous one, so you can stop where you feel comfortable or keep going to master level.
What is included in the price?
The full Audio Amplifier Repair Course with all 4 levels, 2 bonuses and 2 complementary reference guides. The optional add-ons shown in the order box are separate and cost $14.99 each.
What are the optional add-ons?
Three focused diagnostic guides you can add to your order with one click before checkout. They are optional: the course is complete without them.
Can I study on my phone?
Yes. You can study on a phone, tablet or computer, at your own pace and on your own schedule.
Is this a subscription?
No. It is a one-time payment. There are no recurring charges.
Does it cover every brand and model?
The course teaches methods and systems that apply across brands. Always check the manufacturer’s documentation for the exact model you are working on.
Will this guarantee a specific result or income?
No. This is educational material. Results depend on your tools, effort and the condition of the equipment, and no repair outcome or income is guaranteed.
What is your refund policy?
We offer a 7-day guarantee on unopened purchases. Email info@planetebooks.co within 7 days of purchase with your order number, as long as the course materials have not been opened, accessed or downloaded. Once any part has been opened, accessed or downloaded, the sale is final. This does not affect any rights you may have under the consumer laws that apply in your location.
Who do I contact if I have a problem?
Email info@planetebooks.co with your order number and we will help you.
Get the course — $29.99 USD
Self-paced course · One-time payment · Secure checkout
Educational digital course. Not affiliated with any audio equipment manufacturer. Results depend on your tools, effort and the condition of the amplifier; no repair outcome or savings are guaranteed.
Simple and instant
Get started in 3 steps
1
Secure checkout
Pay once for the Audio Amplifier Repair Course. No subscription.
2
Instant access by email
Your access link arrives right after payment, at the email you use at checkout.
3
Start Level 1 today
Learn on your phone, tablet or computer, at your own pace.
Look inside
What you will learn, level by level
Tap a level to see the topics inside.
Level 1Beginner8 topics
- How an audio amplifier works
- Electrical safety
- Beginner toolkit
- Types of amplifiers
- Reading symptoms
- Inputs, controls and connections
- Fuses and simple faults
- Safe disassembly
Level 2Professional8 topics
- Power supply stage
- Transformers and rectifiers
- Filter capacitors
- Voltage rails
- Blown fuses
- Protection relays
- DC offset
- Safe power-up with a limiter
Level 3Expert8 topics
- Output transistors and MOSFETs
- Bias adjustment
- Driver stage
- Hum and buzz
- Distortion
- Dead channels
- Thermal problems
- Signal tracing
Level 4Master8 topics
- Class D amplifiers
- Car amplifiers
- Component-level repair
- Soldering and rework
- Sourcing parts
- Repair workflow
- Pricing repairs
- When a repair is not worth it
Plus 2 bonuses and 2 complementary reference guides, included in your one-time payment.
Do the math
How fast does this course pay for itself?
Type a number to see the result
Enter your local repair price.
Get the course — $29.99 USDUse your own local prices. This is a simple comparison, not a promise of savings; results depend on the repair and your skills.