Samsung LN40A750R1F intermittently not powering on

[haringtiti]

Referred from r/techsupport for my television issue. Below is a video of the problem as it is happening. Suspected capacitors, can anyone confirm? If so what is the replacement part number?
Thanks

https://youtu.be/XXdaBmW4H_4

[tvtimmy]

Re: Samsung LN40A750R1F intermittently not powering on

Post some pictures of ALL THE BOARDS in your tv. Also one of the whole back of the tv.

[budm]

Re: Samsung LN40A750R1F intermittently not powering on

Post some pictures of ALL THE BOARDS in your tv. Also one of the whole back of the tv.

+1.
You will need to do some Voltage measurement to help narrowing down the cause of the problem.

[haringtiti]

Re: Samsung LN40A750R1F intermittently not powering on

As requested

https://imgur.com/gallery/6q6do5t

[neilc6]

Re: Samsung LN40A750R1F intermittently not powering on

You have obvious bulged electrolytic capacitors on your power supply. Top right corner I see three tops bulging and not flat. I would replace all 7 capacitors in that area with Rubycon PX or ZLH series from Digikey.

From a service bulletin for BN44-00197A - CM804, CM806 1000uF/25V and CM809, CM812 1000uF/10V. The others not in the bulletin but I would replace anyways. Confirm with the marking on the side of the capacitor. Note polarity when installing. The negative side is always marked.

[tvtimmy]

Re: Samsung LN40A750R1F intermittently not powering on

There are repair kits on ebay for under $13. Don't buy the super cheap one that uses CHONG capacitors.

[haringtiti]

Re: Samsung LN40A750R1F intermittently not powering on

bought a power supply board from ebay and it's back in action. much obliged for the advice