Chosen Solution
Good day, Recently I acquired a Seiki LE-55GB2 HD television great picture and great sound no issues with the quality whatsoever. However it has a very strange habit of shutting off video and sound at the same time at the oddest times. The power button stays illuminated and once I power it down, I can wait about 30-45 seconds and it will power back up. It may repeat this process every 10 min or so or it may work for over a day before this issue happens again. It is the oddest thing. I popped the back off and checked to see if any connections were loose or if capacitors were bulging but nothing jumped out at me. I have also performed the factory reset in the menu functions and performed the power reset. I tried different inputs to see if the hdmi was the problem but the problem still persists on each port. On a different site someone suggested I replace the EEPROM on the main board to correct the issue. I just wanted to get a second opinion before committing. I haven’t been able to find out much info on this television, seiki has a rep and it’s no surprise this one is giving me these issues but like I said the picture is amazing and so is the sound. I found the tv on the curb so if I get a free tv with a great pic and sound for a minor repair fee DIY I am good. I am a well versed technician with computers, but I have not performed many diagnostics on televisions. any help or suggestions would be very appreciated.
@wintersoldier12 it could be the EEPROM but it does not sound like a typical EEPROM issue. Sounds more like a main board issue since you are losing both sound and video. Post some images of your boards with your question so e can see what you see. Include a set of pictures that show the position of all the boards within your TV. Use this guide Adding images to an existing question for that. Update (02/01/2018) @wintersoldier12 looks like your power board has issues with the transformer (check discoloration on board) as well as on the cold side. Looks like it had the caps replaced before.
Post some images of the underside of the board.
