Alarm led on samsung pcb model #lj44-00025a

Hi ralopez satx,
I have provided a link to the service manual, with a multimeter you should be able to track down the problem. Let me know if I can help and please rate this solution. Lone99star in Texas also

Ok this problem was alot more simple than i thought, it's the relays that you hear clicking. I took out my board and took it to my friends shop where he fixes plasmas and lcds etc.... We tested all the capacitors on the board... tested good Then tested the two transistors i saw someone speak about chaning in another post.. tested good Now the last thing i tested were the two relays on the board you have to take them out the board to test them here's how. Get a 9 volt battery and a multimeter that beeps when it detects continuity. Using the 9 volt battery put power on the coil end of the relay this is the end with the pins directly opposite each other, now you should hear it click leave the power on it then using the multi meter test the pins on the other side of the relay if it beeps it's good, if not bad. I purchased both relays from www.mouserelectronics.com the part # is JW1AFSN-DC5V they only cost $2.58 each it's best to change both even if one tests ok.

We have identified a common problems with theses sets manufactured by, SVA, Gateway, Viewsonic, Sampo and a few other brands. They all have a Samsung power supply board (LJ44-00025A), which has cause these units to lose power. There is a easy fix, replace the power board. But you ask why should we? That's the right question. If these boards all have the ability to fail with various parts and within various displays. This has to be a defective part. As of now, there is no recall on this part. Therefore, we are generating a list of customers, who own these displays and are requesting a refund for previously purchased parts or a replacement part at no cost to the customer. We are in the prelimary stages, so please be patient with our efforts.

If have indentified your unit is salvage by an power issue an wish to purchase the indentified part (LJ44-00025A, we recommend you purchase from http://www.adc-ast.com/.

We cannot guarantee that any monies will be refunded by this claim.

Thanks
Shawn Moffett
Samsung Claims Administrator


If you are interested in participating in this claim, please email the requested below to samsung.lj4400025a@yahoo.com

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You need a power supply board Fix it for $139.00 can do it your self unplugg the unit put keep the new fuses i have a phone # they have the board gatway & samsung will not gave you the parts.

When the set is first turned on, there is a startup sequence that occurs. There are problem detection circuits throughout the set that once trigered, cause the set to shutdown. What you are seeing is the set entering its protect mode. There is an internal problem that is causing this shutdown. Were there any problem symptoms prior to this shutdown problem? That may provide a clue to the problem. Plasma sets don't usually just stop. There is the possibility that the power supply is defective. Since it is what is called a "switch mode" supply, defective capacitors can prevent the supply from starting up properly. Without seeing the unit and taking measurements inside, it will be difficult if not impossible to resolve this remotely. I would suggest that you invest in a detailed repair estimate from a local service shop. This should not cost more than about $50 or so. Post the estimate details here and we should be able to guide you through the actual repair.

Good luck.

Dan