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The TV is five or six years old. It has worked fine till last week.
No memory sticks.
I have the back of and been unplugged many times.
Voltages on Power Board CN 6150 at plug in, Power Led red:
1. 3.3 V Standby
2. AC/DET 2.72V
10. BL_Err 3.3V
When power button pressed, Led turns green, additional Voltages:
3. Power_on 3.3V
4. Audio 12V =12v
8. Reg 12V =12V
9. Reg 12V =12V
12. Dimmer = 3.0V
14. TCon_VCC = 0V
15. TCon_on = 0V
I have to unplug to turn off.
No lightning that I'm aware of. No issues with anything else. No firmware update attempts.
what about the backlight error even in standby?
Standby led is red, not amber, my mistake.
I'll try the firmware update in the morning and let you know.
I tried the firmware update, and thought it was updating, the green light came on for a short while, then the ***** *****ght began flashing and went on for a long time (20-30) min. Didn't help, nothing changed.
I then ordered a main board from eBay, supposedly checked and working 100%. I installed and turned the set on and herd the relay click. After what seemed like a long delay I herd a tone and saw Sony logo on screen for a moment then dark, backlights off, p/s voltages same as before with original main, can't turn set of with power button or remote. This momentary logo, tone and backlight doesn't repeat, acts same as original main now.
Yes, I get a red led at plugin, and a green led at turn on. Have to unplug to turn off TV.
I plugged in the usb flash drive and plugged in the TV. I got a red standby led and hit the power button. Didn't hear a turn on relay but still have the red led and after a while the amber led came on. No flashing just solid red and solid amber and been on 20 min. or more.
I follower the directions and checked the file size and it's in the root directory no folder.
OK, while unplugged, I reformatted a different flash drive fat32. I sent the firmware file (verified 19.8 MB) to the root directory of the flash drive. Plugged in the flash drive while TV still unplugged. Plugged in TV and hit the power button. I have a solid red led and in 10 seconds a solid amber led. Everything is same as before.
If the update is same as the installed firmware will the update run?
The beep and Sony logo screen only appeared the first two times I powered on the set with the new main board. It was only on a couple seconds then the backlights went off nothing visible after that. I had an HDMI input attached so I tried to turn up the volume and pressed the input button multiple time to try to get audio, but no luck. Green power led stayed on but had to unplug to turn off.
Yes, that is correct.
I unplugged the main board Saturday and didn't try again till today. Plugged the main back in and hit the power, Sony logo and tones, relay clicks and red light starts blinking 4 blinks. I hit the power and red blinking light goes off green power led and Sony logo and tones again, relay clicks and 4 blink red. I unplugged and tried again, now back as before, red standby, hit power button and get green power led, nothing else happens, unplug to power off.
I picked up a used inverter board and installed in TV. I turned on and got picture sound and menus, and power button turns on and off. Problem is it works for two or three minuets then shuts off with flashing red 4 blink error. Subsequent tries get shorter and shorter till back where we started.
Checked all plugs and connectors. Screen picture, controls, everything look normal till abrupt shut down and 4 blink red error. Put original main board back in and it works same way.