If your TV is completely dead, shows only a red standby light, or switches off by itself, the power supply board is the first suspect. This board converts mains AC into the clean DC voltages that every other part of the TV needs. In Aligarh, with frequent power cuts, inverter changeovers and voltage swings, power boards take a lot of stress.
City Electronics repairs power supply boards at component level. We test the fuse, bridge rectifier, main filter capacitor, PFC section, switching MOSFETs, controller ICs and output capacitors, and replace only what has failed. On many TVs the backlight LED driver also sits on this board, and we check that too.
TV on nahi ho raha? Zyada tar power board ki kharabi hoti hai — jaldi aur sasti repair.
Common symptoms
- No standby light, TV completely dead
- Standby light on but TV doesn't start
- TV clicks on and off repeatedly
- TV switches off after a few minutes
- Burning smell or a pop sound from the TV
- Dark screen with sound (LED driver section)
What causes it?
Voltage spikes and surges
Spikes when power returns after a cut can blow the fuse and damage switching components.
Dried-out capacitors
Electrolytic capacitors age with heat; bulging capacitors are a classic cause of clicking and restarting.
Low voltage operation
Running the TV on very low voltage stresses the PFC and switching stages.
Short in another board
Sometimes the power board shuts down because the main board or backlight is drawing too much current — we check for this.
How we fix it
- 1Visual inspection for burnt parts, bulging capacitors and dry solder joints.
- 2Safe testing with a current-limited supply so no further damage occurs.
- 3Each output voltage is checked with and without load.
- 4Faulty components are replaced with rated equivalents.
- 5The TV is run for an extended period to confirm stable operation.
Typical turnaround
Same day to 1 day for most boards
Most power supply repairs are completed the same day or within 24 hours. If a specific IC has to be ordered, it may take an extra day or two.
Frequently asked questions
Should I use a stabiliser for my LED TV?
Modern LED TVs have wide-range power supplies, but a good surge protector or stabiliser is still recommended in areas with heavy fluctuation. We can advise you on the right one.
My TV died during a thunderstorm. Can it be repaired?
Usually, yes. Surges through power or cable lines damage the power board and sometimes the main board input. We test both.
Is power board repair cheaper than replacement?
Yes, component-level repair is usually much cheaper and is ready faster than waiting for a replacement board.