Re: Samsung PN43D450A2D board swap
If I leave everything connected . I get lots of random clicks from the smps board lower relay. No music. However If I disconnect the power leads going to the XMains, same results but If I disconnect the Ymain. I get music.
Also If I disconnect the Main board. Same results no music. But If I disconnect the Logic board I get music.
All this with no Picture.
The.Sniper...
TheSniper
New Member
Last Activity: 11-09-2013, 04:01 PM
Joined: 05-28-2013
Location: Tampa Fl
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Samsung PN43D450A2D board swap
All,
in regards to a Samsung PN43D450A2D with an unknown dead board or several boards. has the relay click of death and no pic.
I was lucky enough to come across the same Set with a cracked screen.
so a complete set of known good boards.
My question is. Is it safe to swap out boards between the sets. basically identifying the bad board. this way I can hang onto the other boards for future safe keeping? what if any would be the safest way to accomplish this.
Thanks in advance.
TheSniper -
Re: Samsung PN43D450A2D
I will add:
If I remove the Xboard pwr cable : Same results bunch of cllicking
If I remove the Yboard pwr cable: the unit appears to power up music but no pic.
Also I tested On the SMPS:
on constant power all cables connected:
PS-on =3.29v
Stby = 5.1v
D5.3 = nada
D15V = nada
However If I test pin during power on I get the correct voltage upon boot up
voltage seems to be correct when SMPS relay clicks then afterwards No voltage at test pin.
-TheSniperLeave a comment:
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Re: Samsung PN43D450A2D
ideas/thoughts?Leave a comment:
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Re: Samsung PN43D450A2D
If I disconnect the power cable from the SMPS to the Main board I get abso nothing. no clicks no blinking no anything. as if everything is dead....Leave a comment:
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Re: Samsung PN43D450A2D
Right at plug in(power up) it briefly flashes. then a bright flash and then one last flash all within the first 3. seconds or so. then nothing(no more flashes). All with all cables plugged in...Leave a comment:
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Re: Samsung PN43D450A2D
Only the logic board from the SMPS board I left all other cables intact...Leave a comment:
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Re: Samsung PN43D450A2D
@ Tom66
Mine is exhibiting similar issues When turned on the lower relay on the SMPS board clicks several times.(off and on randomly) NO audio (start up sound). IF I disconnect as you mentioned above. I get a startup sound and no more clicking.(except 2 clicks which sounds normal) But no video etc.
Thoughts?
TIA
TheSniper...Last edited by TheSniper; 11-06-2013, 05:31 PM.Leave a comment:
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Re: New Members - please post your introductions here
Hello everyone.
Im a DIY'er Tampa Bay area. I wish I had logged the things I have repaired but didnt
Now im exploring more into the electronics world. Hope I do well! this looks like a great place to start.Leave a comment:
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