Can you dignose from the photo ? . Toshiba 65S2650EV

[Davi.p]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

The TP that marks VGL are not all coming from the board, there are almost 5 near the chip that have no trace from the border but appear to come from the output pins of chip, i don't know what they means..
there's no more chance surely, rip it off..

..but.. if you like to waste much time.. i have repaired my only tv with this problem, but not sure it was 100% the same, my had no lines.., so, searching the outer zone of the panel pcb for the 3,3v line that enters the side of the last tab, cut it on the pcb, turn on the tv, maybe image disappears, turn off, re join the broken trace, turn on tv, hope that image reappears, if it doesn't it's a pain.. before doing this must be saved the content of the tcon eeprom, if the inage doesn't come back, reload eeprom with old content.. this op. is risky, i don't suggest it

[Ancient1]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

I don't have eeprom writer, so ..

"searching the outer zone of the panel pcb for the 3,3v line that enters the side of the last tab," I did take measurements of all TP on the distribution board (earlier photos) , so I can find the TP but you say cut the 3.3 to the 1st TAB I was working on - this I assume signals something to the eeprom ? and it may get garbled - and rejoin the track ?
Seems complicated.. Looks like ripping the TAB is next

[Davi.p]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

forget about second method if you have no eprom programmer..

[Ancient1]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

So , time to take the TAB out .. and pray ?

[Davi.p]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

of course

[Ancient1]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

I plan on : low heat ( heat gun ) and slowly peel off .
sounds ok ?
but what pray should I say ? would jewish pray be good ? . not funny

[Davi.p]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

no need of heat...

[Ancient1]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

So I pulled the TAB out
On power connect , something blew on PSU , I think a coil . Burnt through the blanket under.

No idea why as I did nothing unusual.
Total Loss

Thanks a lot for your help ! awsome !

[Ancient1]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

by the way :
Fuse is blown.
Any clue what this : R44 , is ? one end melted

[Davi.p]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

This is non sense, unless you have done something out of the plans, further that type of piece of wire, i have never seen in years and years of TV studying.., take a photo of the whole board..

[vinceroger69]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

by the way :
Fuse is blown.
Any clue what this : R44 , is ? one end melted

search Current Limiting Manganin Wire Shunt Milliohm Resistor

[budwich]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

So I pulled the TAB out
On power connect , something blew on PSU , I think a coil . Burnt through the blanket under.

No idea why as I did nothing unusual.
Total Loss

Thanks a lot for your help ! awsome !

IF the picture of the tab that is shown is how you powered up the set at the time, it is possible that the "half removal" was not a good idea. It should have been totally disconnected.

[Davi.p]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

Contact your electrcian, this fault seems to be due to a surge from the energy distributor or another device on the house cabling

[Ancient1]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

Budwich : The TAB was totally removed.

vinceroger69 : Thanks ! Is it possible to solder back ? I want to check the Panel at least.

Davi.p : The blow up occurred exactly with Wall Power connect. I don't think Power Surge is possible and I have my PC with surge protector in same room - the Surge protector would have "jumped". I don't think the wire resistor was the fault i.e if I change the Fuse and solder this Resistor back the PSU would still not work . You agree ?

A TV from Hell. I put so much work time and money in it..

[Davi.p]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

This problem is not related with work on panel, i can only say this. Have you removed the thin wire from the panel before?

[Ancient1]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

Yes, of course I did. I don't want a wire with electricity floating around.
What a story ...

[vinceroger69]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

Budwich : The TAB was totally removed.

vinceroger69 : Thanks ! Is it possible to solder back ? I want to check the Panel at least.

Davi.p : The blow up occurred exactly with Wall Power connect. I don't think Power Surge is possible and I have my PC with surge protector in same room - the Surge protector would have "jumped". I don't think the wire resistor was the fault i.e if I change the Fuse and solder this Resistor back the PSU would still not work . You agree ?

A TV from Hell. I put so much work time and money in it..

Hi not sure about re using the r44 it depends i guess on how much has been lost in total lengh as may alter the resistance. I cant see how removing the tab could of caused it though.

[Davi.p]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

i am waiting for the photos..

[Ancient1]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

vinceroger69 : Agreed. This is what makes this a TV from hell. I put down the TV same way I did many times before..
In the image you can easily see that the Wire Resistor was cut clean at the VIA.
Thing is, its unlikely it caused the Main Fuse to blow i.e something else is damaged.

Davi.p : What photos ? I am facing a PSU repair issue, and frankly , this took the air out of me.. I don't feel like taking out Mosfets etc , at least for now. I already spent ~$42 on new LED strips ( after I replaced 2 (saw another 2 already replaced), sold, it came back with BL issue, didn't notice Panel issue, was happy - expected to sell at +$150 ..nasty )

[Davi.p]

Re: Can you dignose from the photo ? . Toshiba 65S2650EV

But you are an hobbyist tinkerer like me? So you quit the repair without even searching an used board?