Thanks for your reply. Using your suggestion, I was able to pull up a similar circuit diagram, but unfortunately it did not include the components in question. Thanks for your input, though.

The TV is a Samsung UN65JU67ODFXZA Version TD01. I replaced the power source board and the TV is now working, but I decided to try and troubleshoot the old board to fix at the component level. Trying to get a schematic and a parts list has proven to be an issue. Trying on my own, I can't tell you how many times my Norton security has flagged sites as "malicious". I ordered a service manual from ServiceManuals.net, paid $16.99 and got 66 pages of everything BUT schematics and component parts list! Can anyone steer me in the right direction? Some of the surface mounted component parts...

Thank you! Makes sense. I am not familiar with a driver chip, however. If anyone can walk me through that, it would be appreciated.
Mark

I currently (out of necessity) have found myself troubleshooting a Samsung TV: Model UN65JU670DFXZA Version T01. My past has been in repairing antique radios...not new circuits. Here I am very new. The TV would not turn on and did not have a standby light. When I opened the back, I noticed that the power supply board had a blown fuse. While I attempted to search for a short, I found two. Now comes my ignorance...The transistors that I found to be shorted are labeled as: 1E52AH FDPF12N50NZ. The only ones I can find are on Ebay but the top numbers are either 1E16AJ or 1B23BB. Ive never ordered transistors...

Hi From Mark!
My past experience has been in antique radios but have questions regarding TV repair. I will be posting questions shortly. Thanks for your support and for having me as a member!!