Troubleshooting a Samsung 32” old glory

[daroo]

Hi, I'm a new member from italy, so be patient for my bad english.
I've got a flat lcd tv (LE32R73BDX/XET) that started showing some coloured lines and other strange artifacts.
I found 2 bad electrolytic caps, that I replaced. A 1000UF and a 470uf.
The tv worked for a week but now gives the same artifacts.
So I opened it and replaced the caps again and found I wrongly put a 1000uf instead of the 470uf one. And I can hear a whistle from the transformer.
I decided to change also other caps ( trying to pay attention this time) but the problem is showing again.
- Now I think that the transformer is broken. Am I right?
- Or maybe the caps I used are not of excellent quality (they are YAGEO caps)?
- I'm supposed to replace the entire board or the transformer only is available somewhere?




The whistle comes from here:

the transformer currents:

[audiofreak19]

Re: Troubleshooting a Samsung 32” old glory

Lines seem more like t con issue or tab issue.

[kasfamily]

Re: Troubleshooting a Samsung 32” old glory

Show foto this "some coloured lines and other strange artifacts".

[daroo]

Re: Troubleshooting a Samsung 32” old glory



the lack of definition in this photo is due to the low light in the room not a tv issue.

[daroo]

Re: Troubleshooting a Samsung 32” old glory

I reseated the connectors and now is working but the wistle is still there but not very loud

[kasfamily]

Re: Troubleshooting a Samsung 32” old glory

Transformer may make noise at work, you need to solder terminals of the transformer. After some time, turn off the TV work and check the temperature of the transformer

[daroo]

Re: Troubleshooting a Samsung 32” old glory

sorry for my bad english but i have to resolder the terminals of the transformer? because there might be welding defects?
After I moved the tv in another room the problem started again, but after only a knock-knock on the top of it the problem stopped and now it works good ( 2 hours so far)