Re: Samsung PS43D450 - No Picture Has Sound.
No worries bro - thanks for all the help - Will I order all 3?
X - Y and Buffer?
Edit: Ordered all 3 - £44 quid delivered - Thanks again for all the help
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Last edited by ph3d; 01-05-2016, 04:51 PM.
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Re: Samsung PS43D450 - No Picture Has Sound.
Ok I think the mosfet is the black piece sticking up on the right hand side in the middle of the picture and where it is soldered it has some of that gunk around it i started removing this but what should I be testing on the mosfet?
Also where is the IGBT on the above picture and how do I test that?
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Re: Samsung PS43D450 - No Picture Has Sound.
O.k will do mate thank you - In work just now after about 4 hours sleep last night as I sat up playing and trying to find out more so wont be able to check or do anything for about the next 12 hours..
Can you give me any advice on testing the mosfets and IGBT's?
On the Y-SUS board is it just testing a short circuit between the larger blue plastic covered parts in this pic -
Is there a IGBT on there I am not sure what that is and looking at the pictures of IGBT on google...
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Re: Samsung PS43D450 - No Picture Has Sound.
Looks like he has the same problem as me voltages are being pulled down when the X and Y are both disconnected.. wasn't resolved there either ...
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Re: Samsung PS43D450 - No Picture Has Sound.
O.k went ahead and removed the buffer board from the Y-main and still getting the voltage dropping off like a stone.
One thing I noticed when I disconnect the Y-Main it shows 0 Vs when it falls off - With the Y-Main connected it drops and then stays at 10v and holds steady there.
Should I just replace the y-main and the buffer board and see what happens? Dont want to waste money on these parts though without proper confirmation from the experts
I can also here a very small ticking noise coming...Last edited by ph3d; 01-04-2016, 06:43 PM.
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Re: Samsung PS43D450 - No Picture Has Sound.
Looks like you where spot on good sir - S/C's detected on the buffer board - where do you suggest I go from here?...
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Re: Samsung PS43D450 - No Picture Has Sound.
Hi dudes,
Cheers for the buffer board youtube video that seems to be the problem I have found short circuits on 2 of the connectors top 3 where ok bottom one was all good problems started showing on the one second from the bottom at the top of the connector and shorts on the third from the bottom at the very bottom of the connector (hope this makes sense)
Where do I go from here order a new buffer board or will i need the ysus and the buffer board?
Cheers
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Re: Samsung PS43D450 - No Picture Has Sound.
Yeah just had a look there - I take it I dont need power either lol.. sorry I am clueless when it comes this - just having a smoke break and watching the buffer board S/C test again before I get back to it.
Anywhere else I should be testing for S/C's?...
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Re: Samsung PS43D450 - No Picture Has Sound.
I have done the tests as posted in the first video
I have not done any of the buffer board tests or even looked at it yet will see what I can do and have a look over that I just watched the video and will need to check nothing is blown on there and possibly remove and test for S/C's...
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Re: Samsung PS43D450 - No Picture Has Sound.
I am going to go ahead and say no.. unless you mean continuity? Even then I have an idea of what it is but I would just need advice on what points to check?
Edit: if the Y-main was the problem would VS and VA not be ok with it disconnectedLast edited by ph3d; 01-04-2016, 04:31 PM.
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Re: Samsung PS43D450 - No Picture Has Sound.
Images of the board are what sordids posted and there are images on the other thread I have linked above also still cant find vs on can you see where on the above board I should be checking?...Last edited by ph3d; 01-04-2016, 04:27 PM.
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Re: Samsung PS43D450 - No Picture Has Sound.
Yeah I have checked VS and VA as stated in the first post I get 207 volts on power on then it falls to 10 for VS in about 1 second and VA gets 57 as it should and falls to 0 within a few seconds
Where is VS ON so I can test that?
Also the video you posted is the video I posted in my first post also.
Cheers...
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Re: Samsung PS43D450 - No Picture Has Sound.
Will check that in a moment - Nah no image at all not even the samsung logo on power on or menus
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Re: Samsung PS43D450 - No Picture Has Sound.
No mate I cant seem to see that I must be going blind - Will it be on the same board as Vs and Va
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Samsung PS43D450 - No Picture Has Sound.
Hi,
Bit of background - Was watching the T.V when it just lost picture still had sound - Can see the power light on the T.V flash when I press the buttons on the remote - Turning it on the power light comes on then flashes around 5/6 times and then goes off I think this is possibly indicating no source/signal but not sure.. Can stick one in if needed.
No flicker or anything just panel stays dark when powering up.
I am new to this so went out and grabbed a multimeter and hit youtube to watch some videos on troubleshooting.
I followed the troubleshooting...Last edited by ph3d; 01-04-2016, 03:53 PM.
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Re: Cleaning Motherboards - ATTN SMOKERS!!
Amazing what they can stand up to given a good time to dry out!...
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Re: Cleaning Motherboards - ATTN SMOKERS!!
wow amazing the amount of crap that came off that - nice job!
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Re: New Members - please post your introductions here
Names Eddie from Scotland - needing some assistance diagnosing a samsung plasma
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