Help! Cap on Y-sustain went poof after main board swap

[Kjelds]

Re: Help! Cap on Y-sustain went poof after main board swap

Received my Y-sus board today. Just checked the y-buffer board by doing this test: https://www.youtube.com/watch?v=51SZsfH60EY

There wasn't any indication of shortages of the IC's when checking between the Y-sus outputs and the Y-buffer outputs. Are there any additional tests, that I should do?

If not, I'll swap the Y-sus board and then check if Vs, Va, Ve and Vsc all match the sticker on the back of the TV. Are there any additional tests I should do to ensure, that my TV doesn't blow up again

[Kjelds]

Re: Help! Cap on Y-sustain went poof after main board swap

Made two identical posts, how do I delete this?

[Kjelds]

Re: Help! Cap on Y-sustain went poof after main board swap

So I've looked through a couple of videos explaining how to change the Y-sus and decided to give it a go.

After the swap the TV seems to work perfectly again. I've checked all the voltage testpoints (Vs, Va, Ve and Vsc) and they are all pretty much in line with the label on the back, only off by max 0.5 volts, which seems to be decent in the videos I've seen.

So hopefully it will now keep working for more than 24 hours.

If any of you have suggestions to what I should check before I put the TV back on the wall, it will be greatly appreciated as all your previous suggestions which seems to have fixed the problem

[vinceroger69]

Re: Help! Cap on Y-sustain went poof after main board swap

Hi just saw your update im glad the replacement y-sus has solved your issue i still wonder why your old one blew though, but glad the tv is now working fine, do a long soak test on it turning it on and off also then after a few days im sure you can class this set as a sucesfull repair.

[ReeceyBurger123]

Re: Help! Cap on Y-sustain went poof after main board swap

Awesome work

[Kjelds]

Re: Help! Cap on Y-sustain went poof after main board swap

do a long soak test on it turning it on and off also then after a few days im sure you can class this set as a sucesfull repair.

Hi Vinceroger69,

Just for a newbie like me, what do mean by soak testing? Just leaving the TV on for several hours or what?
Thanks again for the good advice and link to the board

[vinceroger69]

Re: Help! Cap on Y-sustain went poof after main board swap

yes thats what most of use do after a repair like you have done, turn it on and off too during the day a couple of times like in normal use and also leave switched on for a good few hours doing this soak test also rules out any overheating issues etc that only show up when tv is hot.

[ReeceyBurger123]

Re: Help! Cap on Y-sustain went poof after main board swap

I run the Tvs I have repaired for 24 hours solid downstairs running test patterns.

[Kjelds]

Re: Help! Cap on Y-sustain went poof after main board swap

Great! I'll do that, when I get home from work

[ReeceyBurger123]

Re: Help! Cap on Y-sustain went poof after main board swap

As its your own Tv just watch it normally if it goes wrong its right in front of you

[Kjelds]

Re: Help! Cap on Y-sustain went poof after main board swap

Yeah, last time I did that, it blew up, but I guess there's no other way fingers crossed