Sun 24.1 LCD / Samsung 244T

[roadstir]

Re: Sun 24.1 LCD / Samsung 244T

Ok, I just returned home from the electronics supply store and replaced the large cap (100uf450v). When I powered it up there was a noisy vibrating sound and the removable fuse blew.

[roadstir]

Re: Sun 24.1 LCD / Samsung 244T

I think I'm about ready to raise the white flag here. I've cashed in a great amount of goodwill from you guys and have spent $50 for a questionable board rebuild, and $30 today for more capacitors and a solder pump, and have nothing more to show than a burned smell in my shop.

If I could ask your opinion on a couple more things.

1. There's a "new, open box" power supply on ebay. Would you trust it and/or spend another $110 for one?
2. There's a Samsung 244T 24" on ebay for $200, which uses, I believe, the identical boards. Would you gamble on either?
3. Or would you keep plugging along here?

Thanks

[jetadm123]

Re: Sun 24.1 LCD / Samsung 244T

Based on your experiences with eBay thus far, I would stay away from buying the $100 power supply and $200 for a 244T. The only reason the supply is $100 is because they are hard to come by. Still, it's way overpriced for a supply. The $200 for a used working 244T would be taking boards from a working monitor and putting them into your Sun? Where's the logic in that? I say take that $200 and combine it with some additional cash and go buy a new monitor. No risks as with buying used stuff and you get a warranty to boot.

[Lumberjack777]

Re: Sun 24.1 LCD / Samsung 244T

Personally I would blame the guy on eBay for his so-called cap "service" that claimed a nonworking PSU was working when he had it, then not working when it arrived back to you.
There is a difference between a "service" an an actual part. Checking out the seller he sells only Samsung parts and has a 100% positive feedback. (pro) But he only has 27 feedbacks, and says the part cannot be returned under any circumstances. (con)
I'm inclined to agree with jetadm that the best value for that kind of money is a new one. Plus, as he said, you get the warranty. I just checked Newegg and they have a nice selection of 24" monitors for under $200. Brand New.
I'm fairly sure the $106 power supply would probably make it work again. But for how long? What next? A lamp, an inverter? You are most likely going to get the most LCD hours for your money from a new one. ~L-J-7~

P.S. We can keep trying to fix this power board also. But if you are looking to spend $200, get a NEW ONE

[retiredcaps]

Re: Sun 24.1 LCD / Samsung 244T

Personally I would blame the guy on eBay for his so-called cap "service" that claimed a nonworking PSU was working when he had it, then not working when it arrived back to you.

That was my original thought when the seller didn't replace all the capacitors on the board.

[roadstir]

Re: Sun 24.1 LCD / Samsung 244T

Gentleman, especially, Jet, Retired, and Bud-

I finally wore down and purchased the new power supply on ebay. It was getting frustrating not having the skillset to properly diagnose (and repair) my board, even with the great help from you all. In the end I spent about $180 to get it back. And, no, in a financial sense it may not have been the best decision, but I am concious of the environment and I felt better about salvaging what I consider a great looking and nicely spec'd monitor as opposed to sending it to a landfill.

I'm not sure how to handle it with the eBay person who "rebuilt" my board for $50. He's got 100% positive feedback and I hate to be the one who changes that, but it obviously wasn't working when I got it back from him and he doesn't take returns. I'll probably send him an email explaining the problem and see if he tries to do the right thing. If he's willing to make an adjustment I won't ding his rep. Though I am a bit concerned he'll want to take another look at it and then blame it on the 450v capacitor I replaced on the board and had the use blow.

Once again, thank you all for being so generous with your time and expertise. You guys were patient with someone who was willing but not experienced and I really appreciate it. I hope I can pay it forward with someone else in an area where I can help.

David in VA

[jetadm123]

Re: Sun 24.1 LCD / Samsung 244T

I haven't read the specifics of the ebay seller's listing, but ebay does offer a buyer protection program for most purchases. Of course, you have to give the seller a chance to refund your money, but if that falls through, then you should be able to open a dispute through ebay and get them involved.

[retiredcaps]

Re: Sun 24.1 LCD / Samsung 244T

then you should be able to open a dispute through ebay and get them involved.

Difficult to do as the seller has a "reasonable" claim that modifications done to the board after it was received could be the problem.

[Icarium]

Re: Sun 24.1 LCD / Samsung 244T

I have the classic "will not turn on for prolongued periods of time" and decided to replace caps. Three 1000uF caps on the power supply are bulging. This also seems to be rather common. I am unsure about one of the capacitors on the controller board. I took a picture of it. What do you think, should I replace that as well?



Thanks for reading!

[mariushm]

Re: Sun 24.1 LCD / Samsung 244T

Replace the three swollen ones, replace the two in the top right corner on last picture as well even though they don't look bad.

I'd also replace the two small capacitors that are in the middle of the board, right by that large 100uF/450v capacitor

[Icarium]

Re: Sun 24.1 LCD / Samsung 244T

Thanks for the advice, mariushm!

Which ones in the middle do you mean exactly? Do you mean the smaller ones to the right or also the medium one left of it?

[Icarium]

Re: Sun 24.1 LCD / Samsung 244T

Also, what about my original question about the SMD cap? Should I change that as well?

[selldoor]

Re: Sun 24.1 LCD / Samsung 244T

I would replace all the caps except the big one for best results.
You do not say which ceramic cap you mean - it is not marked on the picture.

Perhaps you do not mean ceramic cap? very small fawn/brown ones.

Do you mean the solid polymer C551 - the vent may look a little raised but
cant really tell from the angle.
If the top is bulged then yes, replace it also - are there any others the same size on the board you can compare?

[Icarium]

Re: Sun 24.1 LCD / Samsung 244T

Ah, sorry. I meant the one labeled 5NK 100 35V directly next to the connector in the foreground. It seems to be slightly bulging.

Just noticed the label. Yes, I meant C551. There are no others to compare, though.

Okay, replace as many as possible, got it.

One more thing. How do I figure out what to replace them with. I don't quite understand the label on the C551. The others are easy.

[selldoor]

Re: Sun 24.1 LCD / Samsung 244T

It is a surface mount solid polymer capacitor 100uf 35v the top line is the manufacurer
code/series. You need to get one same physical size.
Examples - here
http://de.mouser.com/Search/Refine.a...5v+100uf%20smd

I would get Nichicon or panasonic.

[Behemot]

Re: Sun 24.1 LCD / Samsung 244T

Wrong model, delete pls