Samsung LN52A650A1F Power recycles

[Audioplus]

Attempts to Power On, recycling continuously. Associate commented that it's T-Con, replaced with new T-Con (TriState) and it recycles appx 12 times, then stays on and operates normally.

Anyone have any ideas, bad T-Con, Power Supply, Main Board, ?

Thank you!

[johnboy1313]

Re: Samsung LN52A650A1F Power recycles

I'm guessing main or power supply. I recently sold a LN52A750R1FXZA to a friend. It's started doing the same thing. I haven't had much time to get over there and check it out. From what I can find on the net, it looks like it's main board related. I'll definitely keep my eye on this thread.

[budm]

Re: Samsung LN52A650A1F Power recycles

How are the caps in the power supply? Standby voltage is solid? I have seen so many of this symptom in Samsung due to bad caps.

[Audioplus]

Re: Samsung LN52A650A1F Power recycles

As always, I make assumptions prior to actually seeing the unit. I had assumed T-Con, so I tossed good money for nothing. Now that I've replaced with a good T-Con, and no change, I'm going to assume power supply. I'll have a chance to bench test it tomorrow, will update.

[Audioplus]

Re: Samsung LN52A650A1F Power recycles

Didn't notice it when I replaced the t-con, but now the 2 ea 25V 1000uF caps are definitely bulging. Are there any others I should replace just to be safe?

[budm]

Re: Samsung LN52A650A1F Power recycles

Replace them all as a set (but not the big 450v one) so you do not have to open it up again.

[Audioplus]

Re: Samsung LN52A650A1F Power recycles

Replaced the caps and unit is working fine, thanks Bud!

[budm]

Re: Samsung LN52A650A1F Power recycles

Thanks for the repair follow-up.