Samsung PN60E530 no picture

[Daddymav]

Re: Samsung PN60E530 no picture

Tested the voltages off the power board last night. I was getting 211~212 & 57~58 which are right where they should be per the panel sticker.

Ordered the yboard rebuild kit from ShopJimmy and it should be coming in a few days. Besides that, I'd like to replace the little blue capacitors next to the yellow transformer that is referenced a little higher up in the thread.

I don't see any markings on the ones in the board now. Does anyone have the specs for these so I can get some new ones?

[Daddymav]

Re: Samsung PN60E530 no picture

Picked up a replacement x sus board since I couldn't find anything for a replacement y board. No luck. I bought the y board rebuild kit from shopjimmy and soldered in all the parts (except for the smallest mosfets) and nothing.

Next step would be the y buffers but they look perfect to me. I was wondering if the bottom board (tcon) could be at fault?

Also, on the back of the input board, it looked like there was damage that I could only describe as long term water damage looking. Like it was pitting the silica board itself. Could this be some degradation due to the circuits? Could this cause the no picture issue? Seems like the power button and speakers off that board are working.

[jim b1]

Re: Samsung PN60E530 no picture

I have this same problem on a PN60E530. (sound but no picture). In my situation it is somewhat thermally-sensitive. If the room temperature is 72 degrees Fahrenheit or below, the TV turns on okay, both sound and video. Over a period of hours, the TV may eventually turn off abnormally. At that time, if I try to restart the TV, I don't get a characteristic "flash" on the screen, and the screen does not light up, but the TV emits sound. On the other hand, if I wait 10-15 minutes to turn the TV on, seemingly for the TV to cool down somewhat, and THEN I turn on the TV, it turns on correctly: Both picture and sound work. I guess my TV is on the very hairy edge of not working.
I'd be best described as an "electronics expert". I would have no problem obtaining, and replacing, leaded components on the boards. I've read elsewhere on this threat that the problem might be some 10 microfarad electrolytic capacitors on a small board.

[Daddymav]

Re: Samsung PN60E530 no picture

I've now replaced pretty much everything in this tv with the exception of the power and input boards. Am I just throwing away cash at this point?

[jim b1]

Re: Samsung PN60E530 no picture

Daddymav:
You can see that I posted the message above, with the sound-but-no-picture problem (that seems so common).
If your TV is disassembled, I wonder if you could tell me the value of the three capacitors on (I think) the power board, near the yellow-insulated transformer? From previous messages on this thread, it looks like those go bad (possibly by popping open?), and if that is the problem, I'd like to try to repair my own. But it would help me if I was aware of the capacitance/voltage of those electrolytic capacitors BEFORE I open it up: The repair sounds rather simple (for me) but I don't want to have to wait days to acquire the correct capacitors in order to complete the repair.

[jim b1]

Re: Samsung PN60E530 no picture

I've now replaced pretty much everything in this tv with the exception of the power and input boards. Am I just throwing away cash at this point?

Daddymav:
I notice that you said you've replaced ...with the EXCEPTION of the power ...boards.
Above in this thread, I think there's text which suggests that the problem is indeed with three capacitors on the power supply board. That's the fix I intend to try, but I'd prefer to learn of the values (voltage and capacitance) of those components BEFORE I open up the TV, so that I can quickly re-close it at the time of the repair.
I ask you to inspect your power board, and specifically the electrolytic capacitors. perhaps some have leaked and therefore failed.

[fercruz]

Re: Samsung PN60E530 no picture

Hi Jim b1,

Where you able to fix your TV? I'm having the exact same issue (down to the TV working fine when it's 70 degrees or less).

If so, what did you repair/change?

Thanks!

[jim b1]

Re: Samsung PN60E530 no picture

Fercruz,
No, I haven't yet attempted to do the repair. The TV works, as long as the temperature is below about 70 degrees when I start it up. (Sometimes, I try to start it, and I don't get the characteristic very brief 'flash' on the screen, indicating it isn't going to come up; so I immediately turn it off, and try again within about 5 seconds. sometimes that works.) Once on, it can stay on properly for many hours.

The main reason is that I want to be able to acquire the replacement capacitors (aluminum electrolytics) PRIOR to opening up the TV, rather than leaving the TV sitting around, useless, for what might be as much as a week. I was hoping that someone else who had already opened this model could identify those capacitors, both their value in microfarads and their voltage. What I need is such a report, or possibly direction to schematics.

Probably Samsung got a bad batch of electrolytics, or possibly they didn't choose ones with a high-enough voltage rating.

[jose6326]

Re: Samsung PN60E530 no picture

fercruz do you have the cover removed from your tv?

i am having similar issues with my samsung but the model number is different
mine is PN60E550D1F

https://www.badcaps.net/forum/showthread.php?t=49827

do you know the board number of the psu and ymain?

i would like to know if the boards are the same

if they are then i can give jimb1 the capacitor info he needs

[jim b1]

Re: Samsung PN60E530 no picture

Thank you Nicholas. I wish I had enough skills to perform repairs by component level.
I checked this Y-Main that I bought and seems like they did replaced/soldered the IC next to transformer. No signs of soldering on capacitors.
Capacitors show 106 printed on it. How or what should i look for capacitors replacement.
Thank you again for your time.
Here some pics of it.

The number "106" would generally mean 10 microfarads. But you also need to know what the voltage rating of the capacitors will be. As long as you replace them with capacitors with an equal or higher voltage rating, things should be okay.

[jim b1]

Re: Samsung PN60E530 no picture

Hi Jim b1,

Where you able to fix your TV? I'm having the exact same issue (down to the TV working fine when it's 70 degrees or less).

If so, what did you repair/change?

Thanks!

I found this item for 60E550. (not exactly 60E530, but it might be close).
file:///C:/Users/Jim/Downloads/Samsung_PN60E550D1FXZA_fast_track_guide_[SM]%20(1).pdf
I would like to see a close-up photo of the SMPS (which I assume stands for "Switched Mode Power Supply".)

[Daddymav]

Re: Samsung PN60E530 no picture

Sorry guys.

Ended up getting a new TV and kinda put this one on the backburner. Still got it taken apart and I can check to see what i can find on the capacitors, but I think I tried looking at these before and couldn't find any markings to determine what they are.

I never thought that it would be the power board since that boards voltages were right where they should be.

Any one else had luck with this model?

I might actually give it a try again tonight since the weather is much cooler than it was when the tv went out and others have had luck when it's cooler. If it'll start up at all, I can start getting some real readings on it. As it stands now it hits a fault and it all shuts down before it starts.

[jim b1]

Re: Samsung PN60E530 no picture

Sorry guys.

Ended up getting a new TV and kinda put this one on the backburner. Still got it taken apart and I can check to see what i can find on the capacitors, but I think I tried looking at these before and couldn't find any markings to determine what they are.

I never thought that it would be the power board since that boards voltages were right where they should be.

Any one else had luck with this model?

I might actually give it a try again tonight since the weather is much cooler than it was when the tv went out and others have had luck when it's cooler. If it'll start up at all, I can start getting some real readings on it. As it stands now it hits a fault and it all shuts down before it starts.

Okay, thanks. I assume the capacitance values are 10 microfarads, but what isn't clear is is their voltage. Common voltages are 16, 25, 50, and higher.

Please look very carefully to see if any of the capacitor cases are cracked or are leaking material. And, if you can't see anything, smell for odd smells.

One product is "Freeze Spray", which cools down overheating components. Maybe they don't sell much of it anymore, but it could be useful.

[jose6326]

Re: Samsung PN60E530 no picture

i am still struggling with mine

[jim b1]

Re: Samsung PN60E530 no picture

i am still struggling with mine

Does anybody have a schematic for this TV, or even just the power supply board? I'm very good at reading schematics, having been involved in electronics for about 40 years.

[jim b1]

Re: Samsung PN60E530 no picture

I am trying to obtain a copy of the manual. A chat with a representative of Samsung.com resulted in a statement that I could obtain one at the site samsungparts.com. However, this is the only page of parts for that model seemingly available: http://www.samsungparts.com/Products...A/Default.aspx
I am hoping I can download the manual for free; I intend to share copies with everybody who wants it.

[jim b1]

Re: Samsung PN60E530 no picture

I have just opened up my Samsung PN60E530 Plasma TV. No obvious visual defects (such as leaky or expanded electrolytic capacitor.) The thing fails to start at 69 degrees Fahrenheit, but should do so readily at 66 or so. I will take it down in the basement (where it is much cooler) and play a hair dryer over it to see what location of heating causes it to fail. Then, by blocking the heating using a large piece of cardboard, I should be able to narrow down the location of the heat-sensitive component, possibly to a single component.

[jim b1]

Re: Samsung PN60E530 no picture

Sorry guys.

Ended up getting a new TV and kinda put this one on the backburner. Still got it taken apart and I can check to see what i can find on the capacitors, but I think I tried looking at these before and couldn't find any markings to determine what they are.
I never thought that it would be the power board since that boards voltages were right where they should be.
Any one else had luck with this model?
I might actually give it a try again tonight since the weather is much cooler than it was when the tv went out and others have had luck when it's cooler. If it'll start up at all, I can start getting some real readings on it. As it stands now it hits a fault and it all shuts down before it starts.

My efforts last night suggest that heating the Y-buffer board exacerbates the problem. I suggest that other people try the same thing: Take the back off the TV, set it up on its base in some cool location (basement or unheated garage?) and see if the TV comes on. If it does, play a hair-dryer's output over various boards, and see if the thing fails. If it does, stop heating and let the thing cool down for a few minutes, then try again. Do this for all the boards in the TV, until you find the ones which are heat-sensitive.s

I notice that the IC chips making up the Y-buffer have many, many pins, and those pins are covered by what appears to be silicone rubber. One possibility is that this coating was applied to prevent tiny electrically-conductive particles from alighting on them, and shorting on the connections.
HOWEVER, I would like to direct people's attention to the possibility that Samsung may have intentionally covered those pins to impede the growth of what are known as "tin whiskers". https://en.wikipedia.org/wiki/Whisker_(metallurgy)

A "tin whisker" is a weird phenomenon in which an exceedingly small rod of tin seems to 'grow' out of tin-containing solder. This has become increasingly a problem in this era in which mechanical separation between tin-plated contacts has dropped to extremely small values. Such a whisker may eventually grow long enough to short between two conductors.

Once I've satisfied myself that the problem is located I will try to fix the problem. If the problem is indeed on the Y-buffer boards, I will first try to manipulate (bend; push) the silicone rubber a bit, ideally to break any tin whiskers which are embedded within it.

[jim b1]

Re: Samsung PN60E530 no picture

i am still struggling with mine

see my comment, just above, about using heat to locate the problem.

[jim b1]

Re: Samsung PN60E530 no picture

Hi Jim b1,

Where you able to fix your TV? I'm having the exact same issue (down to the TV working fine when it's 70 degrees or less).

If so, what did you repair/change?

Thanks!

See my comment above about using heat; and the possibility that this is related to "tin whiskers".