Question about Sampo PME-42S6 42 in. HD-Ready Plasma Television

7 Answers

Alarm led on samsung pcb model #lj44-00025a

I have a sampo plasma tv that I paid 3 grand for back in '02. The model is pme-42s6, which I'm am somewhat of a hobbyist and really don't want to trash the tv even thought I already bought a new lcd tv. When I opened the back of the unit and plugged back in the power cord, at first 3 green led's lite up then a few seconds later a red led lite up. Next to the red led is the word alarm. So I unplugged the cord, and searched on forums as to what the cause may be. One forum said it could be the ceramic fuses of which there are 3, one on the power supply board and 2 on the auxilary power supply. After hunting down these two fuses and local tv repair shops who also were unwilling to sell these, without asking a bunch of questions, I was able to get all 3 fuses for $6. I replaced all fuses plugged in power cord and again same red led lit up. So here I am asking if anyone else has had this same problem?

Posted by on

7 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I had a similar problem with my 42" set, a re-badged SAMPO unit bought during 2002 in the UK. It was working one day and when turned back on the next day there was no picture. The clicking noises that occur when the set is switch on happened but not in the usual pattern. The symptoms were the same as a fault it had approximately 10 months after I bought it, although it was then repaired under warranty by swapping out the PSU.
I took the back off the set and confirmed it had the LJ44-00025A PSU board. When first plugged in the green LEDs on the PSU would light and the relays would click. There would then be a short buzzing noise, the relays would click and the green LEDs would go out. The red "Alarm" LED would then light.
After reading posts on a number of forums pointing to the PSU being at fault, I ordered a replacement PSU from ADC in the US ($139.00 + shipping) but that did not fix the problem. After downloading the service manual I then followed the instructions to check and set the PSU voltages, during the time that the three green LEDs were lit. I found that the VA value was zero and the others were a lot lower than they should have been. The service manual shows that the voltage tests are carried out with most of the sub-boards connected, except the Image Board and front panel switches. I then disconnected each connector in turn from the PSU and found that when the connector for the Logic F-Buffer board (LJ92-00601A) was disconnected the PSU would not alarm when powered up and the five voltages were close to normal. I found a replacement 2nd hand F-Buffer board on fleabay for about £17.00 and once fitted I re-tested and set the five voltage levels for the PSU. The TV is now working as well as it ever has. I have since tested the original PSU and confirmed that it also works, although the voltage levels needed adjusting. I hope this helps.

Posted on Jul 06, 2010

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

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.

Posted on Feb 18, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 356 Answers

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

Posted on Jan 22, 2009

×

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Try adjusting the tint & color. I have a problem with color looks like red is missing It is mostly green.

Posted on Nov 09, 2010

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 9 Answers

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

<NAME>
<ADDRESS>
<PHONE>
<EMAIL>
<MODEL>

Posted on Apr 06, 2009

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 2 Answers

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.

Posted on Feb 07, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 4,234 Answers

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

Posted on Jan 22, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How do i hook up a dvd player to the plasma ?


connect a hdmi lead,cheap online,to back of tv and to back of player and thats it,no tuning,nothing

Feb 14, 2010 | Sampo PME-42S6 42 in. HD-Ready Plasma...

1 Answer

Lost TV mount hooks/fasteners


I am getting rid of my sampo.  I am willing to sell the tv brackets or the stand or the wall mount as well.

Jan 22, 2009 | Sampo PME-42S6 42 in. HD-Ready Plasma...

2 Answers

We are looking for a base for a Sampo 42" Plasma.


I have a PME-42S6 on Ebay that has a turning on problem it is a complete unit and work good if you can get it to turn on

Ebay # 120362175465

bid on it and pick it up and there is your stand.

Bob
678-333-6746

Jan 12, 2009 | Sampo PME-42S6 42 in. HD-Ready Plasma...

1 Answer

Need a remote control for Sampo pme 42-s6 (s) TV


I have a PME-42S6 on Ebay that has a turning on problem it is a complete unit and work good if you can get it to turn on

Ebay # 120362175465

bid on it and pick it up and there is your remote control
Bob
678-333-6746

Dec 24, 2008 | Sampo PME-42S6 42 in. HD-Ready Plasma...

1 Answer

Sampo PME-42S6 doesn't turn on


Same problem red alarm led comes on you need the power supply unit it's $139.00 you can fix it your self. And gateway dont have to parts i have a phone #

Dec 13, 2008 | Sampo PME-42S6 42 in. HD-Ready Plasma...

2 Answers

I have good Power supply board for your Sampo 42S4 tv,


do you know if your power supply board will work for the Sampo 42S6?

If so, I am interested.

RyanHoffmeyer@hotmail.com

Sep 13, 2008 | Sampo PME-42S6 42 in. HD-Ready Plasma...

1 Answer

Blue and green lines. no color


I have the same exact tv this sounds like a previous problem that we experienced we resolved ours by plugging into a grand video console. Good luck! Tammy woodpros01@yahoo.com

Jul 23, 2008 | Sampo PME-42S6 42 in. HD-Ready Plasma...

2 Answers

Colour problems


try to go in menu do factory reset ok

Feb 03, 2008 | Sampo PME-42S6 42 in. HD-Ready Plasma...

1 Answer

Sampo PME-42S6 black screen


I have the exact same problem and sent an e-mail to Sampo in Taiwan today (March 3rd) with a technical explanation and description of the problem you have reported. I included information on the status of the LEDs inside the unit. My suspision is that the power distribution board has developed a fault. I am going to try to find out if a schematic is available to repair the board or if a new board can be purchased. I will provide an update when I have one. Glenn

Feb 08, 2007 | Sampo PME-42S6 42 in. HD-Ready Plasma...

Not finding what you are looking for?
Sampo PME-42S6 42 in. HD-Ready Plasma Television Logo

2,428 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sampo Flat Panel Televisions Experts

Starnley Johnwells
Starnley Johnwells

Level 3 Expert

1029 Answers

Jaime Hernandez

Level 3 Expert

2267 Answers

yadayada
yadayada

Level 3 Expert

60541 Answers

Are you a Sampo Flat Panel Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...