TV

Facing TV Problems? Ask a TV Technician.

Ask an Expert,
Get an Answer ASAP!

My plasma TV has a failure after 5 years now. It's a

Customer Question
Hello. My plasma TV has...
Hello. My plasma TV has a failure after 5 years now. It's a Samsung S42AX-YD01. What I see is some kind of red sparkling in the center of the right half of the display. This pattern appears every second. The display/electronics makes a pulsing noise then. I checked the voltages. All OK. I found two service manuals for Philips plasma which are very similar, but the display error does not match to any 'abnormal display failure'. The logic main shows a blinking green LED which should be OK. Which board usually causes this failure: Ymain, Xmain or buffers? Or which boards definitely do not cause this kind of failure? I already replaced the Ymain with a used board, but without success.
Thanks in advance,
Stephan
Submitted: 3 years ago.Category: TV
Show More
Show Less
Ask Your Own TV Question
Answered in 2 minutes by:
5/31/2015
TV Technician: Dan, Master Tech and Repair Facility Trainer replied 3 years ago
Dan
Dan, Master Tech and Repair Facility Trainer
Category: TV
Satisfied Customers: 7,481
Experience: USAF trained; A.A.S Electronics; A.A.S. Education; Currently teaching advanced troubleshooting and repair for the DoD.
Verified
Welcome to JustAnswer, and thanks for your question! I'm Dan, and I'd be happy to help!

Stephan, please post a picture of the screen so I can see for myself. A video would be even better.

Dan
Ask Your Own TV Question
TV Technician: Dan, Master Tech and Repair Facility Trainer replied 3 years ago
Hm, that really doesn't show much. Can you stand back and get a picture of the whole screen?
Ask Your Own TV Question
TV Technician: Dan, Master Tech and Repair Facility Trainer replied 3 years ago
Stephan,

With the TV on, are the heat sinks on the Ymain and Zmain getting hot?

Dan
Ask Your Own TV Question
Customer reply replied 3 years ago

Hi Dan,

thanks for the support.

I checked this again and both sinks are cold after 5 minutes on. Only 2 small sinks on the y-buffers get warm. I checked all fuses and the the electrolytics look ok. I should mention that the picture with the red dots appears every second for a short time. So I took 20 pictures to capture this.

Stephan

TV Technician: Dan, Master Tech and Repair Facility Trainer replied 3 years ago
Stephan,

Zmain and Ymain are cold???
Ask Your Own TV Question
Customer reply replied 3 years ago

Yes. Cold. For sure. Maybe the problem is the logic-main. But the green LED2010 is on and the LED2011 is blinking. According to the service manual this means the board is ok.

Any ideas?

TV Technician: Dan, Master Tech and Repair Facility Trainer replied 3 years ago
Hi,

It's unlikely that the problem is the logic, especially if the LED is flashing. I would remove the Y-buffers one at a time, trying to power on the TV after removing each one. Be sure to remove them completely from the TV and set them aside on a table.

If the upper or lower Y-buffer don't change anything, do the same for the E and F-buffers along the bottom and/or top edge of the TV... not sure if your chassis has them or not... don't have the service manual in front of me, but if you do... remove them just as you did the Y-buffers.

Let me know.

Let

Dan
Ask Your Own TV Question
Customer reply replied 3 years ago

Hi Dan,

these are my test results so far.

- removed upper Y-buffer:

a few pulsating dots in the lower half of the screen

- removed lower Y-buffer:

no more pulsating, just grey horizontal stripes in the upper half

I didn't remove the lower E and F-buffers yet, because of the many sensitive flat-cables. Can it be, that just single defective Y-buffer causes the whole panel to fail?

Stephan

Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a tv technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Louie Your Own Question
Louie
Louie
Louie, Technician
Category: TV
Satisfied Customers: 3,022
3,022 Satisfied Customers
Experience: 25+ yrs. experience in the field and 5+ yrs. online, down to component level.

Louie is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I'm screaming your praises!! WOW! I plugged my TV in and bammo! The picture came on bright and beautiful. What a relief! YOU saved me some money and headache.

VMUnited States

I love this site! $9 instead of a repairman or new/used frig can't be beaten. This older woman will worry less now that she knows about this site. Bless you all.

WindyUSA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

< Previous | Next >

Meet the Experts:

Louie

Louie

Technician

3,022 satisfied customers

25+ yrs. experience in the field and 5+ yrs. online, down to component level.

Rod

Rod

TV & Communications Sys Repair

2,355 satisfied customers

FCC Commercial License, Previous owner of Electronics Repair shop, 40+ years in electronic systems.

Steven

Steven

Technician

1,457 satisfied customers

Ma. Master Technician Lic. Authorized Warranty Support.

euro-pro llc

euro-pro llc

Technician

1,128 satisfied customers

20 years in TV repair,certified by all major brands- Sony,Samsung, LG,Toshiba, Panasonic, RCA,

Daniel

Daniel

Electrical Engineer

1,072 satisfied customers

BSEE (Electrical Engineer), 10+ years electronic design experience ,chip, board, component expert

Conrad

Conrad

Technician

946 satisfied customers

Training on many types of consumer electronics, training on Sony Samsung and JVC

Neil

Neil

Technician

803 satisfied customers

More than 10 years experience repairing TV's and electronics equipment.

< Previous | Next >

Related TV Questions
You mention in the above that if the board are not screwed
you mention in the above that if the board are not screwed in that you will blow the boards. I have been trying to trouble shoot by replacing every board and nothing is working. I still get a 5 second… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
Have pink screen on any input, with some snow, i ordered
Have pink screen on any input, with some snow, i ordered logic board but im not sure, i find difficult to fix plasma… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
steve, I was just reading one of your other post helping
Hi steve, I was just reading one of your other post helping a customer with the Samsung pn51d530a3f that is clicking 5 times on and off. I tested voltage already at vs and va. I disconnected the conne… read more
Steven
Steven
Technician
Vocational, Technical or Trade Scho
1,457 satisfied customers
PN43D490A1D does not power up. 5 relay clicks, the red LED
PN43D490A1D does not power up. 5 relay clicks, the red LED flashes twice, 5 times, then the relay clicking stops. LED keeps the twice flashing pattern. - All capacitors seem ok on the power supply boa… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
Hi there! I have a similar question as you answered on this
Hi there! I have a similar question as you answered on this 50" Samsung. I have a 42" 42c450 TV that also has the relay clicking issue. I have tried replacing the P-Logic Board and also the main SMPS … read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
Do it yourself can be so frustrating. I have a Samsung PN50C490B3DXZA,
Do it yourself can be so frustrating. I have a Samsung PN50C490B3DXZA, 50" plasma 3D HD. It developed a wide horizontal black bar across the screen. The only image visible is at the very bottom, with … read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
Hi, I have a Samsung PN51D450 that acts like it is turning
Hi, I have a Samsung PN51D450 that acts like it is turning on (it chimes on startup and shutdown, the Standby light turns off while running, etc.), but no picture appears. I have tried to identify if … read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
Hi I have a pn42c450b1d Samsung plasma tv and while watching
Hi I have a pn42c450b1d Samsung plasma tv and while watching tv it clicked off. When I turn on the tv it clicks/off- clicks/off- clicks/off. Before really digging deep into it I bought a $40 power sup… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
PN43D450A2DXZA Samsung Plasma TV. Wont power on and red led
PN43D450A2DXZA Samsung Plasma TV. Won't power on and red led stays lit. Relay clicks on power supply board.… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
i have samsung 50" plasma PN50B550T2FXZA the screen went black
i have samsung 50" plasma PN50B550T2FXZA the screen went black and the red light started blinking on and off making a clicking sound.i looked inside,none of the capacitors seemed to be bulging or leak… read more
Steven
Steven
Technician
Vocational, Technical or Trade Scho
1,457 satisfied customers
Samsung Plasma clicks several times and does not turn on. 2011
Samsung Plasma clicks several times and does not turn on. 2011 warranty expired I INSTALLED THE FOLLOWING PARTS AS WELL, STILL NOTHING!((INSTALLED ONE AT A TIME) Samsung BN96-19469A Main Board Samsung… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
as per testing plasma boards. My va and vsus voltages at main
as per testing plasma boards. My va and vsus voltages at main board are ok when starting tv, then they start to drop until zero. This is with the y and x boards dissconnected… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
I have a Samsung S42AX-YB11 that powers on and audio works
I have a Samsung S42AX-YB11 that powers on and audio works but no picture. not sure of the "name" of the boards but there is what looks like a secondary power board on the right (looking from behind) … read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
have l.g model#50pg20ua.ausvljr sound ok sys.con. ok no menu
have l.g model#50pg20ua.ausvljr sound ok sys.con. ok no menu no luminance all inputs.all power supplies working no blown fuses x.or x,sus replaced main pcb no change, no pilot leds lit on x,sus but co… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
samsung PN43D450 - as soon you plug it to the outlet relay
samsung PN43D450 - as soon you plug it to the outlet relay clicks 5 times along with red LED blinking but set wont come on.… read more
Steven
Steven
Technician
Vocational, Technical or Trade Scho
1,457 satisfied customers
Hey Experts... I have a 52" samsung plasma that all of the
Hey Experts... I have a 52" samsung plasma that all of the sudden went to blue screen with a thick vertical white band and lots of thin horizontal black lines. Every 15 or 30 seconds the white band wi… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
my Samsung Plasma TV PN42C450B1D will not turn on. Power ready
my Samsung Plasma TV PN42C450B1D will not turn on. Power ready light has a rhythmic blinking, but nothing happens. I have unplugged it completely for a day, but nothing has reset. Took the cover off t… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
I have a Samsung Plasma TV HPR4272X/XAA. The screen has colored
I have a Samsung Plasma TV HPR4272X/XAA. The screen has colored pixeled lines going up and down and left to right. This happens on all inputs. The sound and picture does still work. Do I need to repla… read more
Steven
Steven
Technician
Vocational, Technical or Trade Scho
1,457 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x