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If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
Search the site by type in the "brand name" of your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Circuit diagrams to any popular brand TVs are given. You can get details there.
Try these first. This TV is an oldie 1988?
POWER SUPPLY STARTS BUT WONT RUN. CHECK FOR SHORTED D909 OFF T905 PIN 17 AND/OR SHORTED IC401. (PCB-MAIN) D909 PT.# 264P521020 IC401 PT.# 272P174010 *** ( TO PREVENT REPEAT FAILURE , REMOVE T905 FROM PCB AND RE-SOLDER LEGS OF TRANSFORMER AND THEN REINSTALL) 2. POWER SUPPLY WONT RUN. CHECK FOR OPEN FOIL AT PIN 2 OF T905. (PCB-MAIN) 3. POWER SUPPLY WONT RUN. CHECK FOR OPEN R903 (220KOHM) AT PIN 3 OF IC901. (PCB-MAIN). ALSO CHECK THE VERTICAL OUT IC, LOOK IN POWER SUPPLY CIRCUIT FOR LEAKY CAPS. YOU CAN TELL BY BLACKNESS ON THE BOARDS ON THE NEGATIVE SIDE OF THE CAPS.