Help...no picture i have the blinking power light when i turn the tv on- no picture. the light on the circuit board that is not lit up is D912. what does this mean and how can i fix it? [email protected]

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electro-medical.blogspot.com/
If blinks continue without any pause, the main board is faulty.

If E994 has continuity , then C701 is ok. defective C701 gives problem with colors and picture.

If there is no led flashing, and does not turn on at all then is the power unit, test the capacitors on the power board.

Hello Sagar,
green led means tv powered on and status ok.
Red blinking light almost always means defect, overcurrent or overload.
6 blinks for Sony lcd flat tv means trouble in backlight circuit, or backlight inverter (backlight illumination or lighting makes your tv screen visible).
common problems in the inverter circuit, which drives the backlight, or shorted drivers, or short-circuit transformers or open circuits.
You should find the problem in the inverter circuit, or in the power supply board or in the main board.
Also look for bad capacitors (electrolytic caps) which are bulged and swollen on top.
Decoupling plugs from printed circuit boards can help you in finding the problem board by elimination method.
If you power up the set after unplugging certain plugs on f.e. the inverter board , this could result in getting a green power led and concluding that this board is faulty.

succes,
Walter from Antwerp, Belgium.

Does power indicator lit if tv plugs in?
This will confirm that power outlet is fine and tv getting power through ac cord.
Does power indicator blinks?
If it is blinking that means tv got some internal circuit problem that could be defective power supply board or bad back light inverter board.
Visual check by local tv repair shop would be good to rectify what board need to be replaced to fix the problem.

helloFive blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.

shaun

If TV model is Sony KV-32HS420 then mostly it requires to replace 2 ICs on DZ board, let me know if you can replace ICs on circuit board and know about TV repair to provide you more technical info.
Thanks.

A blinking power light would indicate a problem on the chassis board located inside the tv. Possibly a failed flyback or other electronic component. Its not cost effective to repair when you can invest in new tv for the same cost as repairing the defective tv. I should also mentioned the danger of dyi troubleshooting of the components inside the tv. I do not recommend unless you are familiar with properly discharging the tube to avoid electrical shock.

Most problems with TV not turning ON is a power supply related problem. The relay click are a normal process that powers up the circuit boards. Right now the TV is most likely in " Protection Mode ". The TV detected a bad circuit board and it will prevent the TV from fully turning ON. This keeps the other circuit board from being damaged. The power light blinking is a code.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, if you can find and purchase a Service Manual over the internet. This will help you diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, blinking light codes, test points, and part# lists. Usually, cost under $20.

I hope I shed some light on the subject for you.

my hitachi model number:55fx48b suddenly just stopped. I can unplug the tv, then turn it back on and red led light will come on for 2 seconds and shuts back off! Can you please help me

Needs Convergence amps replaced. Also fuses around this board are out. There should be small pico-fuses open around this board(replace)