Samsung LN46A550 Power Cycling

[budm]

Re: Samsung LN46A550 Power Cycling

This work great for my TV set

Glad the hear but did you do the Paralleling the caps or replacing the caps?

[mack505]

Re: Samsung LN46A550 Power Cycling

Really appreciate this post. I had the power reset cycle issue with my LN46A550P3F, for about 5 min before it would eventually come on. Replaced C102 and 131 and I am good to go!

[rblack711]

Re: Samsung LN46A550 Power Cycling

I also just had success getting an LN46A550P3F working again by replacing C102. Thanks for this helpful post, budm!

I noticed there is a kit on Ebay (see attachment) for repairing these Samsung boards and it includes a replacement C102, C131, IC101, and a resistor. I wonder which resistor may need replacement?

[katapaltes]

Re: Samsung LN46A550 Power Cycling

Read the advice here from @bdum and several others and added a 47uF 16V eBay tantalum capacitor in parallel with the existing one on C102. Now, my old LN40a550 fires up immediately. The retirees I'd given it to were leaving it on 24/7 to keep it from turning green/screaming because it's their only form of entertainment, and iirc the TV is rated at 200W.

I didn't do any scraping, just soldered positive to positive and negative to the big ol' hemispherical chunk emerging from the PCB nearby as suggested on the forum. I have one new capacitor from my purchase remaining in case I need to add it to C131 on the other side.

I read this thread through at least twice, so thank you to all that posted before me.