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I have a Samsung Plazma TV Model SPN4235 Picture no sound

When I turned it on I got no picture but do have sound. When testing voltages I get none of the high voltages on the PS board only the low voltage 3 volts, 5 volts and 15 volts. Can I assume this is the PS board failure?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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zjut
  • 106 Answers

SOURCE: R4252 No picture, sound OK Y-Drive buffers overheating

Try to replace the Logic Board, about 50% chance to fix the problem.

Posted on Jan 04, 2008

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HDTV GURU
  • 261 Answers

SOURCE: only snow dots on the screen no picture

Does on screen display come up when you hit the menu button?

Posted on Feb 01, 2008

KingDWS
  • 1606 Answers

SOURCE: No picture on my samsung spn4235

On a plasma tv this is not good. It means a trip to the shop or replacement. Check for any warranty and have a good idea of what replacement cost is before you take it to the shop to get fixed. Get an estimate if you can.

Usually this problem means there has been a component fail on the main board.And normally that will be a $2 transistor that you will pay about oh say $75 for plus labour. A good shop should be able to find and fix it fairly quick.

Posted on Aug 21, 2009

  • 6 Answers

SOURCE: HPT5054 50 in. HDTV-Ready Plasma Television: Samsung HPT5054X/XAA - No picture, Sound OK, Have ...

It's not the x main. 90% of the time it's a y buffer that goes out. It's usually the top buffer. 3/4 of the time the buffer takes out the y main board too. You cannot just replace the y-main or buffer because it will just burn out the other within seconds. Also about 1/4 of the time it'll take out the top transformer on the power supply too. The solution? First disconnect the power to the y main board. turn on the television and check the voltages coming off of it. Careful it's high voltage 208V! Remember it's DC too. Then disconnect the buffers from the y main board. You can try powering the y-main up to see if the little LED lights up. This does not indicate it's working though but it'll tell you if it is possible to fix. The fixes for these boards is only for electronics guys. It usually involves replacing 1-3 capacitors and 1-4 FET's. Since a bad buffer can take out a good y main in seconds it's usually recommended that one replace all 3 boards at the same time. It's a $250 fix. How do I know all this? I've now repaired 5 of these televisions. I owned one and spent close to 600 repairing it. I bought misc parts and broken sets online for months before I had 2 different repair guys walk me through the process of repairing them. I had so much cash tied up in parts that I bought 3 more dead sets and repaired them to justify all my spending. I've never had an x board fail. I've had EVERY top buffer fail. I've had all but 1 y-mains fail. and 1 lower buffer fail. I've also had the y buffer fry it's top chip, blow a capacitor and FET on the y-main, and fry the top transformer on the power supply before my eyes. It only took 5 seconds. Replacement of the 3 y boards will almost always fix the sound but no picture problem. Hope this helps!

Posted on May 26, 2010

alpug
  • 1961 Answers

SOURCE: Vizio LCD tv (42inch) will not display picture, no

you can try this step.open the cover of your tv and have acces to the main board (CPU)during power on and no picture appears.press the small butoon found on the mainboard press it while the power is on this must reset everything on the CPU and powers the TV normally...let me know if this procedure work or have a rating to me with the thumbs up button. thank you!

Posted on Sep 30, 2010

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Sound no picture


Sound but no picture....
Should ask yourself, does it PRIME? Meaning, That's where the Plasma panel lights up a little for about 10 seconds after startup. -- If it doesn't prime, then you need either the SMPS, YZUS, possibly both. OR you might need to check the ZSUZ. Driver boards can be culprits too.
And can you even get to the Menu, Volume, etc. but just picture?
Then you need the signal board.
Unfortunately that's pretty common with Plasmas. Can burn out or burn "in" easily.

Here's a great forum you might like. http://www.austech.info/electronics/20607-lg-plasma-tv-has-no-picture.html

Different Brand but similar problem. This site is excellent for do it yourselfers. As for Samsung Parts, be thankful if you are a DIY-er that the parts are much cheaper if you install yourself. Separate with installation adds up very quickly. Personally, I decided to go with the Rear Projection Samsung several years ago and haven't had any major problems. Heard then that Samsung was having lots of complications of this nature.

Here's the link to Samsung Site:

http://www.samsung.com/us/support/owners/product/SPN4235

You can try the tricks on this site:

http://www.broadbandreports.com/forum/r22996341-samsung-spn4235-sound-but-no-picture

To be honest though sounds like either bad SMPS and/or bad Y-SUS pcb's.

Wish you good luck.

Mar 08, 2011 | Samsung SPN4235 42 in. Plasma HDTV

1 Answer

Was watching TV and the picture just went black (still had sound)


eithor the flyback just craped out or the tube went
try turning up the flyback failing that call a service tech and ask for a quote
quote cose 30-50 bucks
atleast you will know forsurre if it's worth fixing

Aug 06, 2009 | Samsung SPN4235 42 in. Plasma HDTV

1 Answer

Samsung Plasma (HPN4239) when viewing TV something like a black film covers the screen - there is still sound but cannot see picture. Turning off the tv for 10-20 minutes restores the picture. Sometime...


Sounds like the X-Main bd has a problem. It provides the illumination drive signal to the Panel. It can also be the Main bd. Have a trained Samsung tech troubleshoot the set.

Jul 05, 2009 | Samsung SPN4235 42 in. Plasma HDTV

1 Answer

SPN4235 TV -- red light blinks but picture doesnt come on.


being that it fell , this is already a bad sign that the screen is dammaged and it will need to be tested and looked at to see what other dammage has happen to it

Nov 06, 2008 | Samsung SPN4235 42 in. Plasma HDTV

1 Answer

Samsung SPN4235 42 in. HDTV


IF THERE IS SOUND, PROBABLY THE Y-MAIN BOARD, IF IN WARRANTY CALL SAMSUNG

May 02, 2008 | Samsung SPN4235 42 in. Plasma HDTV

1 Answer

Picture is not coming on samsung spn4235


Remove the Power Supply cable to Y Main board and check the Vs voltage in Power Supply board.
1. Vs voltage is OK, replace the Logic board or Y Main board.
2. Vs voltage is NG, replace the Power Supply board.

Dec 31, 2007 | Samsung SPN4235 42 in. Plasma HDTV

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