Question about Televison & Video

Open Question

Put 3 new boards from shop jimmy .power,main,and buffer-still no screen image but see backlite on.what could be wrong?

Posted by on

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 1 Answer

SOURCE: Y Upper Board

It looks like GUEST is a little anxoius about your helpful forum here.

Posted on Sep 24, 2008

Ad
  • 1 Answer

SOURCE: RE: Dell W4201C

i have a Dell W4201C ,the picture Dims or picture blinks when channel changes

Posted on Jul 03, 2009

budmrtn
  • 11361 Answers

SOURCE: Have an Acer x233h LCD

If you can see the image with the flashlight, the T-CON board is good but you do not have backlight for the lighr source for you to see the image. Check out the backlight and the power supply circuits.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Please post back what you find.

Posted on Nov 23, 2010

ginko
  • 19396 Answers

SOURCE: how do I test the y-sustain main board from a

Hi.

As such boards are cheap and fail quite easily (both the two sustain and the buffers) Philips service manuals are more oriented at board swapping then at proper testing. In this particular case the buffer boards fail very easily because of a bad soldering to IC. The short will regularly blow the main sustain board.

To start when a main sustain (e.g. Ysus) is fried the TV will go in protect mode with the led flashing in standby. One test is done disconnecting the Sus board (with power off) and restarting the TV. If TV does not go in protect, then the sustain board was good.

If there is no protection:

The first thing to check on a main sustain board is the fuse. If the fuse has blown the IC is probably fried.I believe fuse is F5004. Check for swollen capacitors that may have blown. Test the FET. That is the core of the board as it is the power amplifier.


Here the service manual:PHILIPS_SM_15540.pdf - Right Click "Save Target As"

Here a more useful service manual. Check and follow troubleshooting diagrams in manual.

Here some troubleshooting from users.

Note:if buffer board was shorted, then the main sustain board is usually faulty.

Regards.

Ginko

Posted on Sep 13, 2011

  • 362 Answers

SOURCE: My Vizio 55XVT1A power on, has sound, but no picture. I changed new power board, main board, T-cond board, but it still same problem. What's wrong with it? Is it anything with inverter board? Than

If this is an LCD tv the backlight inverter is bad, a good way to check it is to shine a flashlight close to the screen and see if you can see a faint picture.
Let me know what you find

Posted on Feb 19, 2012

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Vizio LC470DUG powers on for 4 seconds than goes off--possible mother board


No such thing as a mother board in a TV set. Here is a list of the PCBs
Types of TV Boards Every TV uses a collection of various boards to perform every function imaginable in a television. The boards work together to produce sound and images on a television screen. When certain mechanisms in a TV fail, it may be time to start testing different boards to see if they are functioning properly.

Main Board

The main board, or motherboard, is the central hub of a television circuit system. The easiest way to identify a main board is to find the board with the various video and audio inputs/outputs. Generally speaking, main boards also contain a tuner, HDMI, USB, and S-video port. Main boards are one of the largest boards in a television. This part is also sometimes called the main module or the A/V (audiovisual) board.

Power Supply Board

Another large and important board inside a television is the power supply board. Usually found in the center of the TV, the power supply board has several connectors that supply power to the other circuit boards. It can contain transformers, large capacitors, and integrated circuits. There is usually a table on the power supply board indicating the different voltages it produces in addition to the signal names.

Inverter Board

Found on LCD TVs, inverter boards are used to mount the LCD backlight. These are smaller boards, usually shaped like long, thin rods. If an LCD TV's screen is dark, distorted, or difficult to see, it can be the result of a defective inverter board. Inverter boards fail when inadequate power is not allowing current to pass through the backlight bulb.

Timing Control Board / Logic Board

The timing control board, known as the T-CON board, is typically only found on LCD and LED TVs. Plasma TVs, on the other hand, use a logic board. The functions of the logic and T-CON board are similar: each functions to digitize the information it receives from the TV's processor. This allows the screen to display images on the pixel level. When the T-CON or logic board fails, the screen images may become distorted, leading to pixilation and the appearance of lines on a television. On a logic board, there are slotted connectors on all four sides, while T-CON boards have connectors on just two sides.

X-Sustain and Y-Sustain Boards

Also known as the X-SUS and the Y-SUS, the x-sustain and Y-sustain boards only appear in plasma screen TVs. The X-sustain board may also be called the Z-SUS. These boards function similarly, producing proper screen images. Although they serve pretty much the same function, the two boards work independently of each other. The X-sustain board activates all the display lines at once, while the Y-sustain board addresses all the individual lines of display. When one board breaks down, it probably does not affect the functionality of the other. However, it may be a good idea to have both replaced because X-SUS and Y-SUS boards have a relatively short lifespan anyway. A failure of one could mean an impending failure of the other.

Buffer Boards

Buffer boards are also only found in plasma screen TVs. Connected to the Y-sustain board, a buffer board works to turn output to the plasma display. Common defects of buffer boards include the burning and shorting of power lines.

Dec 03, 2016 | Vizio Televison & Video

1 Answer

Replaced all 3 boards in ViZio E701i. Backlite comes on & set immediately shuts off.


I would claim the 180 day warranty on the parts you got. Chances are one of them are defective. It's rare that the display or backlighting shorts out and causes shut down of the system.

By the way, you put this in the Wall Mount category not TV's,

Apr 15, 2016 | Vizio 40" 70" Tv Premium Full Motion Wall...

1 Answer

No imaging, have sound, backlight, etc.


It may be an input cable problem. Check hdmi and or coax cables to make sure they are not damaged . If you have another tv hook cables up to it to make sure they are working. Hope this helps.

Dec 31, 2013 | Vizio M550SV 55 in. HDTV

2 Answers

Philips 42pf9630a/37. Software version: bx23u-1.6.0.0-03541. SBY procedure version: 001.008.001.007. No error messages listed. No defective modules listed. 5427 operating hours. Picture size is...


If the image looks normal but misshapen then the Sustain and buffer boards are functional - their role is strictly to transform the image data into direct commands for pixels from the plasma panel.
The shape, size and aspect of the image is encoded in the image data which is determined by the processor on the mainboard which also stores the firmware and the commands, and is used to do the diagnostics. So either the processor is failing and the mainboard will have to be replaced or the image data get corrupted - check the data cables between the mainboard and the sustain boards. If the cables are good then replace the mainboard
http://www.partstore.com/Part/Royal+Philips+Electronics/Philips/42PF9630A/Royal+Philips+Electronics/Philips/996500038481/New.aspx

Sep 17, 2011 | Televison & Video

2 Answers

Tv flat screen only half the screen works rest is black


This is casued by the buffer boards on the right or left edge of the plasma tv. You need a direct replacement for the top buffer and then your picture will return!


Please rate if this helps!


Parts are found on ebay or shop jimmy

Mar 07, 2011 | Sony 50 in. Plasma TV

1 Answer

RCA L26HD35 has a bright white flashing screen with horizontal lines in it. there is no audio unless I put a DVD in and then I get a motorboat sound. I believe the inverter and backlights are fine as the...


There are two possible boards that can give such symptoms, main board OR power supply board, replace them to fix tv problem.
Both are available in Shop Jimmy on reasonable price, click above links to view board images and price info.
Let me know if you have additional question.
Thanks.

Sep 29, 2010 | Televison & Video

4 Answers

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!

May 16, 2010 | Samsung HPT5054 50 in. HD-Ready Plasma...

1 Answer

No image - only the back light is on. No desktop display


if it's new then get it replaced...
else u need to get it fixed from a tech shop....one of the below is @ fault....
1 the LCD screen is gone,
2 the backlite (a small tubelite) is gone
3 the invertor board(a small PCB) behind is gone

May 10, 2010 | Apple PowerBook G4 Mac Notebook

1 Answer

Sharp AQUOS LC-26SH10U 26 inch LCD Television. Video input problems? No audio. I get a picture using RCA cables but nothing using coax cable. Also I have no audio. When I get a picture using the RCA cables...


Hi,
You need to replace Main Board of TV to fix its issues, click Shop Jimmy to see an image of that board, call Shop Jimmy on 952-881-6492 or 877-881-6492 for main board availability as currently its out of stock.
Thanks.

Jan 17, 2010 | Televison & Video

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

12 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74383 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...