Samsung ue49k6300ak

[PedroBorges9]

Re: Samsung ue49k6300ak

What do you suggest then, should I measure the voltages on the PSU?

[budm]

Re: Samsung ue49k6300ak

What do you suggest then, should I measure the voltages on the PSU?

1) Nope, the T-CON is getting the 12V for it to run but the switching power supplies on the T-CON are not running. Where did you get the new T-CON board from?
2) Put all the cables back in place and then check the RESISTANCE at the HVDD, AVDD, .... test point with ref to GND, no power to the TV pf course.

[Davi.p]

Re: Samsung ue49k6300ak

pedro some advices was made but no answer from you, check well the posts, it seems you are lost..

[PedroBorges9]

Re: Samsung ue49k6300ak

1) Got it off of ebay.
2) Everything connected, TV off, not plugged in, black lead on a screw on the side of the board. The resistance in the 2k ohm range for HAVDD is 1.767, AVDD 1.648, 1.1V .216, 2.5V .590, 3.3V .478, F1 1.903 on both sides, in the 200k range VON up to 105 then down to 95.5, 2M range VSS .546

[budm]

Re: Samsung ue49k6300ak

"HAVDD is 1.767, AVDD 1.648" At 1767 Ohms and 1648 Ohms, they are not low Ohms to cause the missing HVADD (same as HVIN_12V), which should be 12v for feeding the AVDD Voltage (about 15 ~ 20V) boost converter.
You need to trac e out the HVADD so see if it goes to the switched MOSFET so you can verify if the switched MOSFET is being turned on or not, see schematic of typical T-CON schematic to use as a guide, the designators of the schematic will not match your board but the operation of the circuit is about the same.

[Ritchie_Uk]

Re: Samsung ue49k6300ak

Thanks for the responses, the coloured wires go to the speakers.

I also am not sure what OD/UD is, is there anyway to test the mainboard.
Looking through this forum I cannot see anyone else with this issue and where to start pinpointing a problem.

I have this issue, even 11 years later 😝

[Ritchie_Uk]

Re: Samsung ue49k6300ak

Hi guys, I just got a tv with the same problem. My HAVDD point does not have any voltage with the tv on, is that normal?

Any luck

[Ritchie_Uk]

Re: Samsung ue49k6300ak

I am having the same Problemo

https://www.badcaps.net/forum/showthread.php?t=98603

[SMDFlea]

Re: Samsung ue49k6300ak

I am having the same Problemo

https://www.badcaps.net/forum/showthread.php?t=98603

So why are you trying to bump this old thread up when you`re already getting help from some experienced members in the other thread .

[Ritchie_Uk]

Re: Samsung ue49k6300ak

Why does it matter, when on this thread a schematic was posted when it was said there isn't one available?

[SMDFlea]

Re: Samsung ue49k6300ak

Why does it matter, when on this thread a schematic was posted when it was said there isn't one available?

It matters because you`re already getting help in the other thread as i said. Do you think @PedroBorges9 will reply,he hasn`t posted anything in over 18 months. You never mentioned a schematic in this thread,but i did see you had posted a request for it in the Desktop PC BIOS & Schematic Requests!forum ,so i moved it to the TV forum.

[Ritchie_Uk]

Re: Samsung ue49k6300ak

Ok Thankyou for the kind explanation, instead of telling me what to do ��