Samsung TV - UE49K6300AK

[vinceroger69]

Re: Samsung TV - UE49K6300AK

Hi Vince

it still dosnt light with the leads swapped around

Could just be a failed led i guess did you check the voltages?

[Ritchie_Uk]

Re: Samsung TV - UE49K6300AK

Could just be a failed led i guess did you check the voltages?

Hi Vince - I have checked the PSU compared to the silk screen, and they seem Ok.

At the moment all the boards are on my desk and I am slowly looking through and cold checking Components. On the other part of the photo somebody posted the schematic for the TCON board

[Ritchie_Uk]

Re: Samsung TV - UE49K6300AK

Vince by the way, I have literally 1000’s of Computer and Laptop schematics, and other ones I am sorting out.
If I can help you, or the other Folks who have been helping me please don’t hesitate to ask.

I have to go to work now, but will check responses.

Stay Safe

[diif]

Re: Samsung TV - UE49K6300AK

Have you measured the voltages on the tcon. There is a 3.3v test point just to the right on the non working LED.

[Ritchie_Uk]

Re: Samsung TV - UE49K6300AK

Stupid Question - Would a failed LED cause a problem I measured the resistance of the LED and it measures differently compared to the other day which was about 2K for the faulty one

[diif]

Re: Samsung TV - UE49K6300AK

Stupid Question - Would a failed LED cause a problem I measured the resistance of the LED and it measures differently compared to the other day which was about 2K for the faulty one

Unlikely, but if you look at it's location it looks to be connected to the 3.3v test point and has 3 caps in parallel.

[Ritchie_Uk]

Re: Samsung TV - UE49K6300AK

Thankyou diff

[Davi.p]

Re: Samsung TV - UE49K6300AK

Don't waste time with absurd tests like searching a faulty status led, them never fails.. start from the more possible causes, remove metal bars from panel's boards, then check capacitors / diodes for shorts..

[vinceroger69]

Re: Samsung TV - UE49K6300AK

The boards davi.p mentions are these in post number 12 picture 2 and 3 https://www.badcaps.net/forum/showthread.php?t=70440

[diif]

Re: Samsung TV - UE49K6300AK

I'd measure the test voltages on the tcon first before moving on to the driver boards.

[Davi.p]

Re: Samsung TV - UE49K6300AK

The fact is that if the panel tensions are not present could be well that tcon is in protection mode, so opening the bezels is not difficult in these models...

[Ritchie_Uk]

Re: Samsung TV - UE49K6300AK

Hi David.p

This unit is horrible to open, it took me nearly 30 mins to get into it.
I have been working away, so to be honest, not much has progressed.

I need to get it working, as it takes up so much room.

Regards

[Ritchie_Uk]

Re: Samsung TV - UE49K6300AK

I'd measure the test voltages on the tcon first before moving on to the driver boards.

Diff Thankyou

[Davi.p]

Re: Samsung TV - UE49K6300AK

No good to open 2 threads for the same device, please don't do it more, Samsung never release schematics since the first Led Tv models..

[Ritchie_Uk]

Re: Samsung TV - UE49K6300AK

Don’t tell me what to do

[Davi.p]

Re: Samsung TV - UE49K6300AK

If you feel ok continue by your own way..

[Ritchie_Uk]

Re: Samsung TV - UE49K6300AK

David.p - I respond to kind people, In the Uk we say Please and Thankyou

The people who have helped me already is appreciated, and if I can help anybody I will, with my access to resources.

[Davi.p]

Re: Samsung TV - UE49K6300AK

i have said 'please', i don't know what you refers..

PS: i've read another thread, so you posted the other one in another section, but moved after, so no problem..