OLEVIA 265TFHD-t11

[budm]

Re: OLEVIA 265TFHD-t11

BTW, the meter is set DC V?

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

Just tried it, and the exact same results...

[budm]

Re: OLEVIA 265TFHD-t11

Well, I do not know what to say, that 5VSB readings do not make any sense to me to have both board with bad 5VSB.

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

Budm, with all do respect, I want to appologize for not knowing better, checked the multimeter and seems it was in ac... Changed to dc, and tried all the connectors we went over today.

Left power supply board:
The 24v reads at 25v
the pson reads close to 1 when off and about 4.25 when on...
Also tried the 5vsb and is at 5v...
5v reads 5

Right power supply board:
24v reads as 0
Pson 4.25
5vsb reads 5v
5v reads as 0.9

Sorry again and hope this information does takes us in the right direction.

[budm]

Re: OLEVIA 265TFHD-t11

OK, so they are all good voltages, so me get it correctly on the symptom, right now the screen will light up just half of the screen, right? and it also stays one like that.

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

OK, so they are all good voltages, so me get it correctly on the symptom, right now the screen will light up just half of the screen, right? and it also stays one like that.

Seems right board don't read same voltage as left board:

Left power supply board:
The 24v reads at 25v
the pson reads close to 1 when off and about 4.25 when on...
Also tried the 5vsb and is at 5v...
5v reads 5

Right power supply board:
24v reads as 0
Pson 4.25
5vsb reads 5v
5v reads as 0.9

Now, something to mention is at one point I tried right board on the left and left board on the right... But no improvement... Which is a little confusing... Should I try that again?

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

I just turn around the power supply boards, left to the right side and viceversa. When I check the voltage it is still is just as mentioned on the previews post... Left side is still shows voltage just fine and right side don't... What could be causing this? Seems the problem is not the power supply, is that possible?

Thanks!

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

I noticed the following that might help you, when I unplug one of the cables from the power supply board and then turn the tv switch to on, the power supply starts giving the right voltage, all the sudden the 24 gives me 24 and the 5v gives me 5v.. When I plug this cable back on, the issue comes back... Might be related? I am including photos of the cable I am mentioning.

[budm]

Re: OLEVIA 265TFHD-t11

OK, the right side (looking from the back) seems to be the problem side since your video also show the left side (looking at the screen from the front) of the backlights do not light up. At this point I suspect the inverter board problem. There are SMD fuses on the inverter board that need to be checked and also the inverter transformers. Please take good pictures of YOUR inverter board (the one on the right looking from the back of the TV, which will be the one that is connected to the power supply that does not have 24V).

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

OK, the right side (looking from the back) seems to be the problem side since your video also show the left side (looking at the screen from the front) of the backlights do not light up. At this point I suspect the inverter board problem. There are SMD fuses on the inverter board that need to be checked and also the inverter transformers. Please take good pictures of YOUR inverter board (the one on the right looking from the back of the TV, which will be the one that is connected to the power supply that does not have 24V).

Good morning and thanks for the reply! I will check as you say. On the right looking from the back there are three inverters, 2 number 4 and one number 3. I will take pictures of the three!

Thanks again!

Fabio

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

Ok, I was able to get to the inverters from the side with the problem. To the naked eye, it does not look bad... But I am not a pro.. So I am attaching a picture of the smd fuses and transformed for all three inverters on that's side. Please, Let me know what should I be looking for or should I meassure something with the multimeter? Thanks again!

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

Budm, let me ask you a question, besides the photos I just sent you of the inverter, yesterday around 11:46pm, I sent pictures of a cable that when unplugged the power supply's starts working just fine... This cable goes to the main board. Now, I just unplugged all cables to the inverter, checked the voltage on the power supply's having plugged and unplugged the cable I just mentioned to the main board... And the problem persists when plugged. Seems having the inverter disconnected didn't to any difference on how the power supply board works when having this other cable plugged or unplugged.

[budm]

Re: OLEVIA 265TFHD-t11

"Left power supply board:
The 24v reads at 25v
the pson reads close to 1 when off and about 4.25 when on...
Also tried the 5vsb and is at 5v...
5v reads 5

Right power supply board:
24v reads as 0
Pson 4.25
5vsb reads 5v
5v reads as 0.9"

Per this reading, the right power supply is getting all the correct turn on signal and correct STBY. That is all it need to be turned on to produce the 24V output. So if you disconnected the inverter and still not getting the 24V , then to me ,it is the power supply problem.

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

Budm, I don't want to confuse you anymore, since now I feel we are close to find the problem. Like I explained earlier, disconnecting the inverter does not gives me the 24v back.. But there is a cable that I do disconnect from the power supply and when I do it does give me all 24v back... The cable I am talking about is attached on the pictures. It is a cable that goes from the power supply to the main board, I am showing you pictures of the cable, where it gets plugged and where to the main board it goes. Let me see if you still have questions, I will try to better explain myself

Images, white plastic cap goes to the power supply board, blue cap is the same cable and goes to the main board.

Thanks a lot for the patience.

[budm]

Re: OLEVIA 265TFHD-t11

So you get 24VDC output from both power supply bundle of red and black wires to both sides of the inverter boards with inverter boards all connected? I do not know what the connect that you removed is for.

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

Hi Budm, thanks for the reply, yes, when that wire is disconnected, I get 24vdc in all red and black that goes to the inverters on both power supplies. But when I try to turn on the tv with that wire disconnected my screen doesn't light up at all no matter how many times I power on the tv.

So you are not sure what that cable is for, is there any info I can provide to help you ?

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

So you get 24VDC output from both power supply bundle of red and black wires to both sides of the inverter boards with inverter boards all connected? I do not know what the connect that you removed is for.

Hi Budm, thanks for the reply, yes, when that wire is disconnected, I get 24vdc in all red and black that goes to the inverters on both power supplies. But when I try to turn on the tv with that wire disconnected my screen doesn't light up at all no matter how many times I power on the tv.

So you are not sure what that cable is for, is there any info I can provide to help you ?

[Fapelbaum555]

Re: OLEVIA 265TFHD-t11

Hi Budm, I hope I did not say or do something that might bother you. I really trust on your expertise and will appreciate if you can lead me to solve the problem I am having with this tv. Again, I am very thankful for all you have done for me. Look forward to hear from you

Fabio

[budm]

Re: OLEVIA 265TFHD-t11

No at all, I am still trying to figure what are the connections are between the main boards and the two power supply boards, so far I cannot figure out why it does what it does when you disconnect that connector.

[budm]

Re: OLEVIA 265TFHD-t11

OK, try to do this for me, write down each pin function of connector of the main board that are connected between the Main board and the power supply boards, inverter board. Do the same with listing of the power supply boards, inverter boards.
For example: CNxxx (or what ever the designator for the connector is) with 4 pins goes to CNYYY on the inverter board:
12v
gnd
gnd
5V

What I will be doing is to draw up how the connectors are connected between the boards to get more understanding how it is put together.