So I just tried something else I just read. I went into the settings and turned the backlight down to below 5 and the TV stopped flashing. However, this doesn't seem like a satisfactory answer and I would rather try to repair this…as this may just be buying me time.
I left the back cover off and with the TV on, board on the right (the one with all the caps and the damaged area) makes a decently loud buzzing sound.
Again, TIA for any help someone has in troubleshooting this TV and repairing it at the component level.
I am having an issue with my roughly 6-7year old Samsung TV (bought around 2009ish?). It is a model # LN40B530P7FXZA. It is Revision CN01.
It worked fine for quite some time and eventually it started to flash brightly/dimly at me on occasion. I then decided yesterday that I would attempt to update the firmware for the first time to see if it would fix it, but it made it worse. I updated it from 1005 and now it flashes black for 3-5 seconds every few seconds.
I have googled a bit and saw that there was a cap problem. Not sure if this is really a cap problem, but I'm not exactly sure how to troubleshoot it, so…
I looked over the boards inside the TV and only found one possible area of burn damage. I looked at the caps too, but don't see any damaged ones, unless I didn't look right.
I would like to try to fix this TV myself since I'm sure its way out of warranty. I can order replacement components and can do board-level soldering, but I have no idea which component(s) need to be replaced.
If it comes to having to replace full boards, I will just buy a new TV, but its unfortunate this one will end up in a landfill.
Here is what the inside of the TV looks like…
Here is the only area that looked damaged to me…