I have a 32inch coby tv after a power outage my tv did not want to switch on anymore the red light that normally turns blue at the bottom of corner on the tv goes on but nothing no sound no picture nothing where can i go to repair my tv?
SOURCE: Red light blinking rapidly...no picture
Gentlemen, I have seen people with this problem and it requires the replacement of the light engine, search AVS Forum, for more information. Understand it is not cheap, hope you have ext warn.
SOURCE: Panasonic 32 inch LCD TV will not turn on-red light flashing
its not hard to replace the bulb and you can go to any tv shop and have them order it.youll need to give them the make and model number off the back of the tv so they know what to order
SOURCE: A repair question for the RCA M50WH74S
If the TV goes in standby, then it is in protection mode.
Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.
Try first leaving the TV power cord unplugged for some times, let say one hour or so.
The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.
1The
internal circuits are jammed because of electrostatic
charges accumulating on capacitors, or because of a wrong voltage read
by the main chip on your monitor controller board. this started the
protection circuit.
2 The protection circuit detected a wrong
voltage or abroken contact, identified an internal fault and kicked in
, starting the flashing light.
If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.
If you are in situation 2 , then there is an internal fault.
If under warranty contact the manufacturer ringing the number on the user manual
If you want to repair at your own expenses, just locate any good qualified repairer.
If you want to DIY you find parts here,
All: Appliance parts, electronics parts & more from PartStore.com
Encompass Parts Distribution
LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |
On LCD Pay
particular attention at inverter and power board, power board can be
inspected looking for bulged or leaking capacitors, then tested with a
multimeter. The inverter is more difficult to test , there is need to
read voltages, should be done by a tech. Also the LCD controller board can cause same problem
On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.
On Rear Projection : check lamp, lamp ballast, power board, and convergence.
On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.
SOURCE: red light flashes on power switch, but no picture or sound on tv
tv will not power on. red light on switch blinks. power relay clicks, but no picture or sound.
SOURCE: My 32inch Proscan lcd tv wont power up the green
If you can open than open your LCD tv & checked Inverter Borad it have White & red color connector may be this board is defective.
http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies
Some tutorials on SMPS:
http://en.wikipedia.org/wiki/Switched-mode_power_supply
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