Samsung PN64F8500AFXZA Issues with turning on - Page 18 - AVS Forum | Home Theater Discussions And Reviews
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post #511 of 520 Old 01-09-2020, 02:17 PM
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Originally Posted by rickardl View Post
Sigh... nice timing before christmas... my European ps64F8505 plasma died just now.

I had the capacitor issue some years ago with the red led blinking etc but this is
different. Completely dead, no sound/clicking when power is on/off.

I have some pictures from when I fixed the capacitors and it seems the power supply is BN44-00603A PSPF881503A
So, the Samsung is now on it's third life: I bought a new power supply board and voila!
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post #512 of 520 Old 01-09-2020, 02:20 PM
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Did you have to solder?
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post #513 of 520 Old 01-09-2020, 02:42 PM
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Did you have to solder?
No. This one is much easier than the capacitor fix. Just three cords to remove from their plastic sockets and a few screws which holds the board in place.


I also measured VS, Vscan, VA and VE and they are now all spot on or very close to the values on the label on the backside of the panel.
I tried to get VS to 211 but ended up with 211.2 and VA to 58 but got 57.99. Vscan was spot on at -198 and VE was 94.9, should be 95 according to the label.


According to Samsung:
"Each plasma panel has a unique voltage setting required to display a picture
properly and maintain long life. Incorrect adjustment of the power supply can create
picture errors. Whenever a power supply board is replaced the new board must be
adjusted to match the panel values shown on the sticker.
If a power supply board is replaced it is imperative that the new power supply be
adjusted to match the existing panel settings. Incorrect adjustment can cause the
picture to be too dark or too bright. Extreme misadjustment can greatly reduce
panel life.
These adjustments must be performed when the SMPS or the panel is replaced."


Note: these values should also be checked and if needed, adjusted, if you replace the capacitors!!


Edit: added pics from Samsung material.
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post #514 of 520 Old 01-09-2020, 03:06 PM
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Does the capacitor fix mean replacing capacitors on the power supply board? So if you replace the power supply board you're also getting those new capacitors?
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post #515 of 520 Old 01-09-2020, 03:47 PM
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Originally Posted by avsforumrocks View Post
Does the capacitor fix mean replacing capacitors on the power supply board? So if you replace the power supply board you're also getting those new capacitors?
No, they are on the Y board to the left of the power supply board.
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post #516 of 520 Old 01-09-2020, 04:56 PM
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Possible to just buy a new Y board too? Where can you find these boards?
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post #517 of 520 Old 01-09-2020, 11:05 PM
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Quote:
Originally Posted by avsforumrocks View Post
Possible to just buy a new Y board too? Where can you find these boards?
If you search for BN44-00603A PSPF881503A (if that is the board you have/want), you will find it still available at some places.
But I asked the local Samsung support where to get it and they gave me the names of two of their service partners here in Sweden
and that seemed safer, albeit more expensive, than ordering from an unknown company on the other side of the world.
They did not have it listed on their website but when I asked about it, they could get it added and then I ordered it.

It was advertised as "factory sealed" (warranty: 1 year. Perfect condition. With logo/seal from manufacturer.)
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post #518 of 520 Old 01-09-2020, 11:34 PM
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Quote:
Originally Posted by rickardl View Post
If you search for BN44-00603A PSPF881503A (if that is the board you have/want), you will find it still available at some places.
But I asked the local Samsung support where to get it and they gave me the names of two of their service partners here in Sweden
and that seemed safer, albeit more expensive, than ordering from an unknown company on the other side of the world.
They did not have it listed on their website but when I asked about it, they could get it added and then I ordered it.

It was advertised as "factory sealed" (warranty: 1 year. Perfect condition. With logo/seal from manufacturer.)
I guess they bought it from "an unknown company on the other side of the world" and uplifted accordingly
In any case great to see these great TVs keep going, mine still goes strong, I bought spare a number of years ago dirt cheap and I have fitted fans at the back that switch on when the TV switches on. Keeping it cool prolongs the life immensely.

Samsung PS64F8580, Panasonic BDT310, Marantz AV8802A 5.1.2, Rotel RMB1555, Cambridge Audio Azur 651W, KEF XQ50c, B&W DB1, B&W PM1, Mirage OMD5, Sonance VP48R, Popcorn A500Pro, Little Dot mk9, Grado GS1000e+SR225i, Beyerdynamic T1
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post #519 of 520 Old 01-10-2020, 01:17 AM
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I guess they bought it from "an unknown company on the other side of the world" and uplifted accordingly
Maybe so but they are an official Samsung Authorized Parts Distributor and seem to be doing 2nd level support for Samsung as well so that seemed the safest option for me.
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post #520 of 520 Old 01-10-2020, 02:36 AM
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What is your opinion on leaving it on standby or cutting the power completely while not in use?
Ever since I did the capacitor soldering, my wife insists on pulling the plug after setting it to standby but
I wonder if that could have shortened the life of the power supply board?
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