okay so my somewhat moderate to middle advanced understanding of plasma TVs and having repaired over a hundred of them in the last five or so years has led me once again to the middle of the road and I'm stumped.
I got this lovely extremely cheaply made Samsung television in from a friend that wanted to know if I could repair it for him. The obvious symptoms are plug it in. The click click click click click and I knew right away that was most likely a shorted ysus or a buffer or possibly a power supply well so it turns out that one before it exploded on the Y sustain buffer board. So I remobed the IC. tested all the other chips and they all test around 4mohm so they're OK
so I did some random checks on the Y sustain board making sure no shorted MOSFETs or fuses are the normal plugged it in and I still get click click click click click. Ok so I went ahead and disconnected the X board and if powered up no more cooking but I lose vs in VA after a few seconds and nothing on the screen. Ok so I disconnect ribbon cable from YS s 2 control board TV stays up and powered. Course nothing on the screen still. So I inspect the X board and found to shorten my sets replace them with parts I had in stock TV powered up and then slowly faded away on vs And VA again .
turns out that I blew the X mosfets again. so I replace the MOSFETs a second time and did some random checks on the board and nothing else it shorted. Apparently if you let the X power up without the ribbon cable connected to the control board it will blow those MOSFETs. This is by far the cheapest piece of crap I have ever seen produced by Samsung. My house is disgraced by letting this thing sit in my living room. I've done random searches on this forum and it appears that the only way to repair this model is to replace the buffer board the Y and the X all the same time due to the fact that nobody has successfully repaired one of these sustain boards before. Sorry for the long rant.
apparently if the Xsus board shorts out it will take out a Ysus board and ysus at the same time but the weird thing is is I can't find anything wrong with the Ysus board. Or the x board for that matter after the Mosfets are replaced and also there is no shorted buffer IC's anymore either. Has anyone successfully repaired any of these boards in the past?
I got this lovely extremely cheaply made Samsung television in from a friend that wanted to know if I could repair it for him. The obvious symptoms are plug it in. The click click click click click and I knew right away that was most likely a shorted ysus or a buffer or possibly a power supply well so it turns out that one before it exploded on the Y sustain buffer board. So I remobed the IC. tested all the other chips and they all test around 4mohm so they're OK
so I did some random checks on the Y sustain board making sure no shorted MOSFETs or fuses are the normal plugged it in and I still get click click click click click. Ok so I went ahead and disconnected the X board and if powered up no more cooking but I lose vs in VA after a few seconds and nothing on the screen. Ok so I disconnect ribbon cable from YS s 2 control board TV stays up and powered. Course nothing on the screen still. So I inspect the X board and found to shorten my sets replace them with parts I had in stock TV powered up and then slowly faded away on vs And VA again .
turns out that I blew the X mosfets again. so I replace the MOSFETs a second time and did some random checks on the board and nothing else it shorted. Apparently if you let the X power up without the ribbon cable connected to the control board it will blow those MOSFETs. This is by far the cheapest piece of crap I have ever seen produced by Samsung. My house is disgraced by letting this thing sit in my living room. I've done random searches on this forum and it appears that the only way to repair this model is to replace the buffer board the Y and the X all the same time due to the fact that nobody has successfully repaired one of these sustain boards before. Sorry for the long rant.
apparently if the Xsus board shorts out it will take out a Ysus board and ysus at the same time but the weird thing is is I can't find anything wrong with the Ysus board. Or the x board for that matter after the Mosfets are replaced and also there is no shorted buffer IC's anymore either. Has anyone successfully repaired any of these boards in the past?
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