Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

[str8shooter1]

Hi All,

I am new the forum and looking for some advice.

I have a Samsung Plasma PN50A550S1FXZA.
It was sporadically power cycling every few months. It would power cycle for a couple minutes, then it would turn on and work fine. It never turns itself off like a lot people are saying is a common symptom. Mine stays on until I turn it off myself. It only cycles on the initial turn on.

recently is is power cycling every time i turn it on, but it eventually turns on and works great.

I took the back off and inspected all the capacitors. I thought I saw a bulging one on the Y systain board. (BN96-07132A, LJ41-05571A, LJ92-01535A REV: AA1). I ordered a replacement on Ebay. I installed it. And for about a week, the power cycling went away. I thought great. problem solved.
But this weekend it starting cycling again, doing the exact same issue - power cycles for a few minutes, then it comes in and works great.

What else could be the problem?
Any advice would be great. I am a rookie and have little skills in solding.

Thanks
Str8

[sordids999]

Re: Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem

[str8shooter1]

Re: Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

I will do that when I get a chance. I was hoping someone could help diagnose the problem from the symptoms to give me an avenue to persue.

[budm]

Re: Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

https://www.badcaps.net/forum/showth...t=25810&page=7
Post 128, 129.
You can try soldering 100uF 10V low ESR (higher Voltage is OK) in parallel with C102 which is on the bottom side of the main board.
This is the common failure for the A500 series.

[str8shooter1]

Re: Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

Thanks budm.
I will give this a try.

[Electrolab1]

Re: Samsung Plasma PN50A550S1FXZA - Power Cycle, but eventually turns on.

I was sceptical. But I did parallel the c102.
I was amazed when the set came on. This is still early on, but I will test this more, before returning this to the customer. Great thanks to whomever posted this fix originally!