Samsung LN40B530...Power on and off problem.

[dbtsat]

Hi to everybody...i have a tv Samsung LN40B530 with on and off problem,when you turn on the tv it will turn on for 3-4 seconds and then it shut down.I inspect all capacitors no sign of bad caps, the only thing i notice is the transformer location TI802 it looks like burn on top. How to check if this component is good or bad...Please help.

Thanks in advance for help/advice.

dbtsat

[dbtsat]

Re: Samsung LN40B530...Power on and off problem.

here is the picture of the transformer.

[joshnz]

Re: Samsung LN40B530...Power on and off problem.

Hi 90% chance of bad transformer.
Can you take a picture of the underside of the board under the transformer.

[dbtsat]

Re: Samsung LN40B530...Power on and off problem.

here are the pictures.

Thanks....

[retiredcaps]

Re: Samsung LN40B530...Power on and off problem.

See
https://www.badcaps.net/forum/showthread.php?t=15304

for transformer readings.

If bad, then you can find it on ebay for $12.99 + free shipping

http://www.ebay.com/itm/160790571433

[dbtsat]

Re: Samsung LN40B530...Power on and off problem.

See
https://www.badcaps.net/forum/showthread.php?t=15304

for transformer readings.

If bad, then you can find it on ebay for $12.99 + free shipping

http://www.ebay.com/itm/160790571433

Thanks a lot...i will order the part.

[dbtsat]

Re: Samsung LN40B530...Power on and off problem.

i got the new transformer...solder it ...and boom! it works like a brand new tv...this is my 11th samsung tv that i fix...i love this hobby.

[tom66]

Re: Samsung LN40B530...Power on and off problem.

You'll find that although Samsung TVs are expensive, they use poor quality components so they don't last. My repair count is 4 Samsung LCD TVs (one 26" and three 40") and 1 Samsung plasma (42".)

[retiredcaps]

Re: Samsung LN40B530...Power on and off problem.

i got the new transformer...solder it ...and boom! it works like a brand new tv...this is my 11th samsung tv that i fix...i love this hobby.

Wow, that is quick shipping from Hong Kong to Canada.

[dbtsat]

Re: Samsung LN40B530...Power on and off problem.

sorry the part, i got it from KLCDparts, San Francisco ,California.

[selldoor]

Re: Samsung LN40B530...Power on and off problem.

Whilst it was the transformer that blew you might want to consider checking changing the capacitors that filter the supply to it.

[dbtsat]

Re: Samsung LN40B530...Power on and off problem.

Whilst it was the transformer that blew you might want to consider checking changing the capacitors that filter the supply to it.

Thanks selldor for the advice....are you familiar with the capacitors location? because another transformer burn...

please i need an advice/help what causing the transformer burn.

Thank you very much in advance.

[melmc323]

Re: Samsung LN40B530...Power on and off problem.

Hi 90% chance of bad transformer.
Can you take a picture of the underside of the board under the transformer.

I am having the same issue!! How do I take off my transformer???

[randtek]

Re: Samsung LN40B530...Power on and off problem.

Use a soldering iron and solder wick to remove the solder from the connections of the transformer leads. The transformer should then come out of the board easily.

[Vontsik]

Re: Samsung LN40B530...Power on and off problem.

This helps me a lot co'z I have same problem with my Samsung tv with same model. Thank you very much!

[brucetv]

Re: Samsung LN40B530...Power on and off problem.

I also have this model in my shop today and it had a faint solarization. I turned the gamma setting down and it helped with the solarization but I noticed whatever channel you turn it to it shows NBC's logo faintly on the bottom right and you see trails behind people as they walk. Power supply voltages look good. VS and VA fine. Does it on DVD too but menu looks fine, no solarization on menu. So now I'm leaning towards the main board. My first thought was the Gamma chip on T-con. Any suggestions?