In this video, we repair a switching power supply removed from a TV. We look for damaged components and replace them, and in the meantime I tell you about various issues related to such power supplies. After replacing the components and connecting the power supply, it turned out that this was not the end of the repair... You will find out whether the repair was successful by watching the episode ;) ------------------------Table of contents----------------------- 0:00 Introduction 0:23 Inspecting the power supply 1:30 What's wrong? 2:38 New mains filter 3:24 Replacing a dirty transistor, selecting a replacement 6:45 New coil 8:03 Checking components with a meter 10:20 A bit about the half-bridge topology and the MOSFET control transformer 14:21 Checking output diodes 15:15 Problems with sparking 15:59 Where are the sparks coming from? 17:03 Component replacements continued 18:05 Is there any improvement? 18:39 How do I start the main converter? 19:52 Another problem 21:57 Power factor correction (PFC) circuit 23:36 Why did the PFC circuit cause the problem? 24:59 The moment of truth, measuring the output voltages 25:42 Checking the current efficiency 27:08 Summary, conclusion ------------------------------------------------------------ Don't want to miss new videos? Subscribe to the channel! My most interesting videos: Dummy load for testing power supplies: • Dummy load for testing power supplies... Changing the voltage in a switching power supply: • Changing the output voltage in a power supply... Electronic siren: • Simple and loud siren, description of operation... The simplest converter, a joule thief: • The simplest converter, a thief... Reverse polarity protection: • Protecting systems against reverse polarity... MPPT regulator for solar panels: • Solar charger, charging controller... Repairing an energy-saving light bulb: • How to repair an energy-saving light bulb,... Building a switching power supply: • How to build a power supply in the fly topology... Laboratory power supply: • Conversion of a switching power supply to a la... Repair of a 5V charger: • Repair of a charger, 5V power supply; What s... LCD monitor repair: • How to repair an LCD monitor, what's in it... ATX power supply repair: • How to repair an ATX power supply, what to look for... LED strip dimmer: • Simple LED strip dimmer, voltage regulator... Battery rectifier: • Automatic rectifier, charger for... Short-circuit protection: • Current limiter, overload protection... Step-up/down converter: • Simple and universal control converter... Simple regulated power supply: • Switching power supply conversion to re... 100W converter from 12V to 230 or 325V: • Converter from 12V to 230 or 325V, m... Simple charger for various batteries: • Simple charger for various batteries [... LED oscilloscope: • LED oscilloscope (part 1): introduction... Step-up converter: • Boost converter, ... Simple and efficient audio amplifier: • Simple but efficient audio amplifier ... Induction heater, high voltage on ZVS: • ZVS system, or induction heater... Fan speed controller: • Speed ​​controller, fan controller... PWM controller for motors and bulbs: • PWM controller for motors and bulbs ... 12V to 230V converter: • 12V to 230V converter, simple and ... Plasma lighter: • Plasma lighter, ZV generator... Playlists: Electronics basics: • Electronics basics DIY: • DIY Converters: • Converters Repairs: • Repairs