Samsung PN60E550D1F no picture, has sound, capacitors look ok - AVS Forum
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Old 09-16-2013, 07:55 AM - Thread Starter
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My Samsung PN60E550D1F lost it's picture. It still has sound. I took the back panel off and all the capacitors look ok. There are no signs of excessive heat on any of the boards. Is there a way to test the boards to isolate the failed board? I was hoping to just replace a few capacitors, but now I'm stumped. Any advice will be greatly appreciated.
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Old 09-16-2013, 07:55 AM
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In a dark room, can you see any glow from the screen?
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Old 09-16-2013, 08:26 AM - Thread Starter
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Thank you for responding. No there is no glow at all. I even put my eye up to it in a dark room and nada. It's just out of warranty and didn't get used that much. Everything looks so nice and perfect on the inside :/
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Old 09-16-2013, 09:07 AM
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OK, do you have a digital multimeter available, or can you borrow one? You will need it to diagnose where the fault is.
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Old 09-16-2013, 09:45 AM - Thread Starter
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Yeah, I've got a multimeter & been probing around and finding some voltages on most boards but I don't know what I'm doing or what voltages I should be finding. 5.5v seems rather common. Thanks, again, for responding.
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Old 09-16-2013, 10:12 AM
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OK, on the back metal plate of the plasma display panel there is a sticker marked SAMSUNG with VS, VA and other voltages written on it. This is the "panel sticker". Please note the voltages or take a picture of the sticker for me to see. Typical range for Vs and Va on 2012 series Samsung is 205 to 215V and 50V to 58V respectively.

Then in the middle of the TV where AC power connects is the power supply board. There should be test points for Vs and Va on there, among others. Set your DMM on volts DC; if it has separate ranges, select 600V or 1000V. The black probe goes on an exposed part of the chassis and the red probe on the test point. Check the voltage matches the panel sticker within about 2 volts.
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Old 09-16-2013, 10:54 AM - Thread Starter
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Ugh, lost internet.

It's says Vs - 211; Va - 57. On the power board, I'm getting VS-TP - 10v; VA-TP - 0v. The fuse passes an ohm test. I think you're on to something. You're good!
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Old 09-16-2013, 11:17 AM
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Just to confirm were those voltages measured while the set had audio and would normally have a picture?

Does it spike up at any time or is it permanently measuring around those values?

At this point it is either a power supply fault (unlikely) or a Y-main, X-main or control board fault, reasonably likely.

Can you supply a photo of the overall chassis layout so the Y-main and X-main can be isolated?
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Old 09-16-2013, 11:36 AM - Thread Starter
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Here you go.
Yes, it powered on I heard my ps3 intro sound before I checked voltages and they were steady
I noticed a spark on the large black transistor looking component when I tried to do an ohm reading on the IC in the following
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Old 09-16-2013, 11:49 AM
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Where is that transistor located?

Try powering the set on with both the top orange and bottom orange large boards disconnected from the power board and from each other. Leave the flat white ribbon on each connected, and leave them connected to their respective buffer/extension boards (green and orange.) Do Vs and Va briefly rise to their rated voltages? (It will shut down due to Y-main/X-main fault detect. No image expected on display.)
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Old 09-16-2013, 12:30 PM - Thread Starter
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Transister like component was on the power supply...I hope I didn't mess it up. The Va & Vs did not rise.
With the x & y boards disconnected, it will not power up & voltage is zero. With x and/or y connected, Vs spikes around 200v & rapidly decreases to 10v while Va spikes around 40 something volts & decreases to zero. I appreciate your assistance and lesson. Thank you.
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Old 09-16-2013, 02:51 PM
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OK. Below the power board, and underneath the stand bracket is a small green circuit board. It should have an LED on it. The LED will either blink once a second, indicating normal operation, or it will blink once every 5 seconds, indicating a fault. What does it do?
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Old 09-16-2013, 03:45 PM - Thread Starter
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Once every five seconds. You are a saint!
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Old 09-16-2013, 03:59 PM
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OK. In which case, replace both the X-main and Y-main boards.

Once place to buy:
http://www.shopjimmy.com/samsung-bn96-22115a-y-main-board.htm
http://www.shopjimmy.com/samsung-bn96-22114a-x-main-board.htm

You may be able to buy them cheaper elsewhere. Replacing both is recommended due to how the energy recovery circuit chains the two boards together. Failure of one may cause damage to the other.

Check PBA (BN44-xxxxxxxA) matches, as well as REV number.

After doing so, apply all firmware updates available for your model to avoid repeat failure.

If you PM me, I'll send you the Service Fast Track guide for this panel. I can't distribute it here directly, as Samsung don't like that.
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Old 09-16-2013, 04:36 PM - Thread Starter
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Wow, Tom, I wasn't expecting to get through this so easily. Thank you very much for walking me through this problem. I learned a lot today. You and avsforum are awesome! Cheers!
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Old 09-16-2013, 04:51 PM
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Glad to help. Anything saved from landfill is a victory. Please reply back if the problem is fixed for future reference.
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Old 06-28-2014, 07:40 AM
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Fixed?????

Hello, Robb009 did you ever get the tv fixed.... which board was the problem... Thanks..
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Old 06-28-2014, 05:03 PM
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Quote:
Originally Posted by hooptydude95 View Post
Hello, Robb009 did you ever get the tv fixed.... which board was the problem... Thanks..
I believe it was eventually determined that the panel was cracked and this was causing his fault.
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Old 06-28-2014, 05:58 PM
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i like that,Copy:This is the "panel sticker". Please note the voltages or take a picture of the sticker for me to see. [IMG]http://*******/njkHuk[/IMG]Typical range for Vs and Va on 2012 series Samsung is 205 to 215V and 50V to 58V respectively.
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Old 07-22-2014, 10:31 AM
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I have nearly the exact same problem on my PN60E550, except mine usually (7/10 times) will turn on and work correctly. When it doesn't turn on, I get the exact same symptoms; no picture(or glow) and sound only. I imagine I probably have a a bad cap somewhere. Would this problem also point towards the X and Y boards? Thanks for any input,

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Old 07-24-2014, 06:11 PM
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Mine is doing the same thing. Cold start, always works. If it's been on for a while, then you turn if off, try to turn it back on within say 30 minutes, no picture. I get sound, no glow.
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Old 07-26-2014, 11:37 AM
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Having same issue with PN60E530 model for about a month. Went from taking 2 or 3 on/off attempts to get a picture to dozens. Once it's on it's perfect but it's at a point where I'm sure I'm going to do more damage with all the attempts.

Repairman came and tested today and feels it's either the Y sustain board or the panel. The Y board showed no shorts but when driver was connected it lost power and when disconnected everything else tested fine and showed no drops on meter. Basically the only issue seems to be when that Y board is connected so he's suggesting ordering one and trying out since it's an easy replacement. If that doesn't work then return it but it's likely then a panel issue and that will mean scrapping which I'm really hoping isn't the case since I'll have basically just paid a grand for 18 months of service.

I'd give more testing details but I'm unable to explain myself since I just have a basic understanding of what his findings were. It's two ribbon cables and screw mounts so the board is a simple replacement so I'll try and report back results if that helps anyone.
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Old 10-16-2014, 10:53 AM
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Samsung PN60E550D / Picture won't turn on - same problem as the rest

TV continually getting worse - once it's on - it's perfect. Volume will still work but no picture. Of course - just out of warranty - 3 payments left. REALLY SAMSUNG? $1500 plus TV should work longer than the warranty. Samsung repair wants $150 just to walk thru my door. Will never buy another Samsung product - they know this set has this problem and should have recalled the part at least. Any good honest TV repair guys on the Treasure Coast of FL?
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Old 10-16-2014, 11:36 AM
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Quote:
Originally Posted by CMCKENZIEFL View Post
TV continually getting worse - once it's on - it's perfect. Volume will still work but no picture. Of course - just out of warranty - 3 payments left. REALLY SAMSUNG? $1500 plus TV should work longer than the warranty. Samsung repair wants $150 just to walk thru my door. Will never buy another Samsung product - they know this set has this problem and should have recalled the part at least. Any good honest TV repair guys on the Treasure Coast of FL?
You say you're making payments for this TV? Is this payment plan via your credit card? If you're paying using AMEX, Discover, Visa or Mastercard, then you should know that they have an extended warranty that's good for the year after your original manufacturer's warranty expires. If the above applies to you, then call your credit card company and file a warranty claim.
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Old 10-25-2014, 04:05 PM
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Great help in this thread!
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Old 10-27-2014, 06:23 PM
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Replaced the Y-Main on mine today, works like a champ again. Still pissed at 1.5 years old this happens and Samsung refuses to take ownership of an issue that many are having with the sets.
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Old 10-28-2014, 06:44 PM
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In need of a good repair guy

Quote:
Originally Posted by sumguy91 View Post
You say you're making payments for this TV? Is this payment plan via your credit card? If you're paying using AMEX, Discover, Visa or Mastercard, then you should know that they have an extended warranty that's good for the year after your original manufacturer's warranty expires. If the above applies to you, then call your credit card company and file a warranty claim.
Hhgregg credit - no interest for 18 months - wish I would have purchased via credit card now.

Anybody know of a good TV repair guy on the Treasure coast of FL??
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