Samsung PN50B650S1F | 50" Plasma
SYMPTOMS: TV fully functional, with the exception of HDMI ports 1, 3 and 4. When devices are plugged into any of the three inputs listed, the TV reports "no signal."
DIAGNOSTICS: Since everything works on other inputs, we can assume that the MAIN PCB is at least somewhat functional, but the fact that all other functions of the set are working means that it is an input issue, and therefore a MAIN PCB issue.
SOLUTION: Board level repair? Heck no! Not unless you're smarter than me, which you might be, and let me know if you figure it out! However, it is my preference in this situation to just swap the board. It's an easy repair and won't cost you all that much. Go ahead and skip over to ShopJimmy for parts! If they don't have them, you can always contact Samsung at 1-800-SAMSUNG and navigate to their parts department for pricing.
Refer to the BOARD SWAPPING TUTORIAL if you need assistance or feel free to contact me. Thanks!
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