Recently my TV was not even able to connect to internet, and was rebooting several times during the process. Finally, I reset it, but didn't solve the problem. Yesterday it decided that doesn't want to turn on at all. The standby led is on, but when I checked power board 5 volt pins read zero. However, 12 and 24 volt pins are active and I measure the exact values.
SOURCE: Monitor won't turn on, no led.
I am having the same problem with one of these monitors, however, i'm in a unique situation. I have one that works and one that doesn't.
I narrowed it down to being the power controller / video signal processing circuit board in this LCD. When I swapped this part alone (after checking the power supply very carefully), the dead monitor came to life. The model number of this part (Manufactured by LG, NOT SONY) is LHS73K. The Version 1.2 is the dead one, the version 1.3 is the good one. Even though the plastic connectors are slightly different, the pinouts are the same and the pins do line up, so I swapped the controllers, and the dead monitor came to life. I notice the dead controller card's GENESIS IC gets slightly warmer than it does with the working one.
I took some high resolution pictures of the 2 cards, and highlighted (light yellow boxes) some differences....
(i'm hosting the pictures on my own file server because they are 1.5mb each, and fixya puts a limit on the file size you can attach a picture with)
Working v1.3 Image: <url>http://server939.pointclark.net:9000/sonylcd/working.JPG</url>
Dead v1.2 Image: <url>http://server939.pointclark.net:9000/sonylcd/dead.JPG</url>
I am going to do some more work and see if I can bypass the soft-switch with a hard-switch to turn the power supply on in the dead monitor, if that works, i'll update the post and let everyone know what and how I did it.
SOURCE: sony tv model klv-32u100m dead standby 5 volts ok
most probably is (a) board ..very common on these models.These boards are made by RoHM.These are similar and used in maganvox,philips and others..Very common breakdown
SOURCE: 5 blinks, Sony KP-65WS500 stays up only with one CRT gun at a time....
5 times blinks shows White Balance error in tv. You need to adjust Screen Volts (G2) and problem will resolve. Screen volts controls located at Focus Block as shown in below picture.
Need further help, please let me know.
Bye.
SOURCE: Insignia TV model NS-LCD26A power up problems
you are correct power pack has bad capacitors, doing what you did may have damaged other components in the power pack, or main video board. let me know what you want to do.
SOURCE: My modem keeps resetting at random times...
This is a firmware problem and the only way to resolve it is to do a firmware update on that device and you can get the firmware from the device manufacturer so you can load it to that modem...
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