The TV power supply unit (PSU) is the key module converting 220V mains to stable low voltages for the panel, backlight, processor, T-Con, audio and other boards. Common failures include electrolytic capacitor failure, MOSFETs, inductors, fuses, PWM controllers due to surges, dust or wear. TV power supply repair saves significantly compared to full module replacement. Key queries: TV power supply repair, PSU restoration TV, capacitor replacement TV PSU, power repair after surge. Navigational: TV power supply repair Khmelnytskyi. Informational: TV PSU failure symptoms, how to repair TV power supply. Commercial: TV PSU repair cost, power supply restoration price.
What the Service Includes
The TV power supply repair service covers: diagnostics (voltage measurement on all outputs with multimeter, short circuit check, oscilloscope PWM pulse monitoring, faulty component search), visual board inspection under microscope (swollen/leaking capacitors, melted traces, solder cracks), replacement of faulty parts (electrolytic capacitors 1000–3300 µF, high-voltage 450–1000 V, MOSFETs, Schottky diodes, fuses, varistors, PWM controllers UC, VIPer, FAN, STR etc.), trace restoration with copper wire, resistor/diode check in feedback circuits, load testing (equivalent load connection on 5V, 12V, 24V, 48V LED backlight lines), voltage stability/pulse monitoring, overload/short circuit protection verification. For full TV repairs — TV repair. Post-repair often requires software installation.
Additionally includes input fuse/varistor/thermistor replacement, optocoupler and feedback circuit check.
When the Service is Needed
TV power supply repair is necessary for symptoms like:
- TV completely dead (no red LED, no response to remote/button)
- indicator flashes or stays red constantly, but screen doesn't light
- TV powers on for 1–5 seconds and shuts off (overload protection)
- strange noises (whine, relay clicks, transformer hum)
- no operation after voltage surge or storm
- backlight fails or flickers (issues on 24–48V LED driver line)
- typical models: Samsung, LG, Philips, Sony, TCL, Hisense, Xiaomi after surges or 4–8 years age
If power LED lights but no picture — likely PSU. For laptops — all laptop services.
Work Stages
- Diagnostics: Input/output voltage measurement, short circuit search, component visual inspection.
- Disassembly: PSU removal from TV, power cable disconnection from panel/boards.
- Repair: Capacitor/MOSFET/controller/fuse replacement, trace restoration.
- Cleaning: Dust/flux/corrosion removal from PSU board.
- Testing: Load connection, voltage/pulse/protection stability check.
- Final Check: PSU reinstall, full TV boot, all mode testing.
Work performed with antistatic protection. For coffee machines — coffee machine repair.
Why Choose Grade in Khmelnytskyi
Grade in Khmelnytskyi has experience repairing TV power supplies across popular brands (Samsung, LG, Philips, Sony, TCL, Hisense, Xiaomi, Ergo). We use professional oscilloscopes, soldering stations, quality components (Nichicon/Rubycon capacitors, original-spec MOSFETs). Clients leave positive reviews on TV revival after surges. Address: Khmelnytskyi, Panasa Myrnoho St., 31/3. Schedule: Mon–Sun 11:00–20:00. Contact: +380 97 719 4430 or Telegram. We also repair robot vacuums, charging stations.
Work includes full diagnostics and testing to prevent repeat failures.
Easy from anywhere in Ukraine
From Sumy or any city ship your TV via Nova Poshta — we diagnose, repair power supply and return it. Details: delivery page.
TV power supply repair is one of the most common and effective TV fixes. After capacitor/MOSFET replacement or trace restoration the TV boots stably, backlight works evenly, no random shutdowns. Grade uses only quality components and proven methods for long-lasting results. If surge damaged multiple parts — we repair comprehensively. Load testing ensures no issues return. Significant savings vs new PSU or TV purchase. Service applies to all sizes and brands — from 32" budget models to 65–85" 4K/8K Smart TVs. Many clients return for preventive maintenance or tuning afterward. If storm damage found — we check varistors/fuses. Grade controls every step to avoid board/cable damage. Complex but reliable repair that returns full functionality at a fraction of new device cost.
