Vintage class AB path
Useful for old receivers and discrete transistor amps.
1. input2. preamp3. driver4. outputs5. relay6. speaker
Troubleshooting coach
Choose the next safe measurement for amps, speakers, boards, and power faults.
A guided fault-finding coach for vintage amplifiers, modern class D gear, speaker/crossover faults, dead projects, heat, fuse trips, and battery sag.
Safety first, always.
ElectroLab AI teaches theory, low-voltage electronics, and planning concepts. Mains voltage, switchboards, fixed wiring, high-current systems, and legal electrical work must only be performed by licensed electricians where required.
Open Safety CenterTroubleshooting coach
Pick the symptom. Choose what you observed. Measure the next safe point.
This is a low-voltage electronics coach, not permission to work on mains, switchboards, fixed wiring, or legal electrical work.
Path clarity
20%
Symptom
Project is dead
No lights, sound, movement, or response from a low-voltage project.
First safe move
Measure voltage at the source, then after the switch or fuse, with the meter in voltage mode.
Battery or adapter
Switch/fuse
Input jack
Reverse polarity protection
Ground return
What did you observe?
Next safe measurement
Start across the supply rails. Write down the voltage with the project connected.
Open-circuit voltage can look fine while loaded voltage fails.
Amplifier maps
Old and new amps fail in different places.
Modern class D path
Useful for Bluetooth speakers, soundbars, modules, and powered monitors.
1. adapter2. standby3. enable4. DSP/input5. class D6. speaker
Tube amp boundary
External checks only unless trained for high-voltage work.
1. input jack2. preamp3. phase inverter4. power valves5. output transformer6. speaker
Coach loop
1.Name the symptom
2.Measure source
3.Pick the observation
4.Probe the next point