The majority of television repairs I do are Samsung, LG, and several variants of TV using the chassis supplied by the Turkish company Vestel, such as Toshiba, Hitachi, and Sharp, Bush, Alba and Acoustic solutions.
I am finding more top level companies like Panasonic, Philips, JVC, Sanyo and Ferguson are also using these cheaper generic chassis.
During LED TV repairs, and LCD TV repairs, many faults I encounter with these brands are software or firmware related, which can be a problem.
This usually leaves the TV “stuck in standby, with only the standby LED alight, with no response from the remote control handset, or the TV buttons.
There are so many variants of these chassis, and so many variants of the firmware (that controls how they work) that I do, where possible, save all the relevant information I can obtain, for future use, so that I can cross- reference the various TV chassis, and the appropriate software files to return them to full functionality.
If I have a TV in for repair, particularly using a Vestel chassis, in order to combat the lack of available software for these Vestel based brands, I will de-solder, and remove the EEPROM (the main memory IC), then copy its contents to my hard drive, so I can use it to reprogram other TV EEPROMS if they have become corrupt and inoperative. This can help me get around many software related issues