Question about Toshiba 50L5200U

Open Question

I have a toshiba 50l5200u no power on i change the power supply board still dead

I changed two power supply board still not working no power light and no light imside

Posted by on

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad
parrotheadpc
  • 2600 Answers

SOURCE: My Toshiba Satellite 2415-S205 is dead as door

Here are some suggestions I compiled, some you have done, thought I would throw it out there for you...

Laptop is dead. How to troubleshoot the problem.
In this post I’ll explain how to troubleshoot a dead laptop and find the problem. The following troubleshooting tips are not model and brand specific, they should work for most laptops.
Let’s take a look at two different scenarios.
Example 1. The laptop is absolutely dead.
When you plug in the power adapter and press on the power button, there is no signs of life at all. The laptop will not make usual noises, LEDs will not light up, the fan will not spin, the screen is blank and black, etc… In short, the laptop is dead.

What you can do in this case?
1. Make sure the wall outlet is working and the laptop DC adapter is getting power from the outlet. Try another wall outlet.
2. Test the laptop DC power adapter, make sure the voltage output is correct. You can test the DC power adapter with a voltmeter.
3. Let’s say the DC adapter is fine and the adapter outputs correct voltage. In this case unplug the power adapter from the laptop, remove the battery, wait for 1-2 minutes, plug in the adapter and try turning on the laptop again.

OK, you tested the adapter and it’s bad. If you decide to replace the original DC adapter with a generic one, you’ll have to follow this rule:
The voltage output on your new adapter has to be exactly the same as on the original adapter. The amperage on the new adapter could be the same or higher.

If nothing helps and the laptop is still dead, apparently the motherboard is fried or there is a problem with the DC power jack. It’s possible the DC power jack is broken and the motherboard is not getting any power from the adapter. In this case you’ll have to disassemble the laptop and replace the power jack.
Example 2. When you plug the DC power adapter and press on the power button, the laptop starts making normal noises, the LEDs work properly but noting appears on the screen. The laptop will not start.
First of all, take a closer look at the LCD screen. Look at the screen under bright light. It’s possible that the image is still on the screen but it’s very faint.
If there is no image on the laptop LCD screen, test the laptop with an external monitor. Connect an external monitor to the VGA port on your laptop and turn the laptop on. You can toggle video output between the internal LCD screen and external monitor by pressing Fn and F4 keys simultaneously on HP laptops, Fn and F5 keys on Toshiba laptops, Fn and F7 keys on IBM laptops. Other laptops may use different key combinations.
Let’s say the external monitor works fine but the internal LCD screen has no image at all. If that’s the case, your problem could be related to the LCD screen or the video cable. Also, make sure the video cable makes good connection with the motherboard and the LCD screen. Try reconnecting, reseating the cable.
In my case, both internal and external monitors were absolutely dead. Neither of them had image. That means the problem is not related to the LCD screen or the video cable. From my experience I know that this problem could be related to the laptop memory.
Try reseating the memory module, maybe it’s not making good connection with the memory slot. Try cleaning contacts on the memory module with pen eraser. Try moving the memory module into another slot. Try replacing the memory module with another known good module, it’s possible that your original module is dead.
If you have two memory modules installed you can try removing them one by one, it’s possible that one of the modules is bad. Try installing different memory modules into different memory slots.

In my case reseating, swapping the memory module didn’t help. I was pretty confident that my problem is not memory related and I moved on.
Try removing battery, hard drive and DVD drive and turning on the laptop without these components.
Also, try turning on the laptop with an external monitor when the video cable is unplugged from the motherboard. If the laptop start with video on the external monitor, apparently there is something wrong with the laptop display panel.
Finally, disassemble the laptop and removed the motherboard.
1. Motherboard. Like on most laptops, in my case the video card is integrated into the motherboard
2. CPU with heatsink and cooling fan.
3. Known good memory module.
4. The power button board witch you need to turn on the system.
5. Working DC power adapter.

Still cannot get any video on the external monitor. The system turns on, the cooling fan starts spinning but there is no video.
At this point I’m 95% sure that the motherboard is dead. CPU failures are not very common, so it must be bad motherboard.


Posted on Oct 11, 2009

Ad
Geekman
  • 32281 Answers

SOURCE: dead toshiba satellite laptop

If the adapter is OK thenconnect it to the laptop and power it up, then look at the power/batterycharging LED light and wriggle the power plug in the laptop's powersocket. If the power/battery LED light flashes and in a certain position thisLED light stays firm, then the power socket is either faulty or it has a drysolder joint where it is connected to the motherboard.This can be repaired but itrequires the laptop to be completely dismantled to get at this power socket andrepair. If you cannot DIY then I suggest you get a quote first.

Posted on Aug 02, 2012

SOURCE: 42rv530u toshiba tv no sound no picture change

The 42RV530U is known to develop problems in both the power board and the main board. You can check out our power board repair service at
http://www.coppelltvrepair.com/p/442/repair-service-for-toshiba-42rv530u-power-board-75010942-dead-tv-or-clicking-on-and-off-problem
and I'd also recommend that you search for 42RV530U at http://blog.coppelltvrepair.com as we will eventually release an article on how to test the board.
Hope this helps.

Posted on Apr 25, 2013

  • 1150 Answers

SOURCE: Why won't it turn on?

Hello Markes.
As Answered already in first posting....
Dont throw away your old power supply board yet!
Modern TV's use a switch mode power supply. Probably the board you replaced... but
They are often turned on by a digital (1 or 0) which triggers the supply to turn on. They don't use an old fashioned ac switch to put ac line voltage into the switchmode board.
The pushbutton on/off button is probably wired to the cpu board and connects through a connector to the switchmode board.
This triggers it to turn on.
Sometimes the digital 1 or 0 is held in an electrolytic capacitor. Like a tiny charged battery.
Check the top of the electro Caps for bulging. The x in the metal on top is to allow it to blow safely, But often they just bulge or leak brown stuff from the bottom.
If you find a faulty cap then carefully un solder it taking note of it's polarity. (Black stripe is negative). Replace it with a similar higher value. Eg if its rated at 10v then use a 15v or if its 1000uf then us up to 1500uf. Go higher not lower. and choose a size that fits the space.
Hope this Helps.... give me a tick?
Trevor
How to Replace an Electrolytic Capacitor

Posted on Sep 13, 2015

  • 18060 Answers

SOURCE: Toshiba 55ht1u - Should I be able to read all voltages on my main, master and slave board PORTS on the power supply board? I am only reading 5V on the main board port.

There should be 12 V and the output on the inverter to the back lights if it is not led would be really high.

Posted on Jul 23, 2016

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

NO BACK LIGHT AND NO AUDIO ON TOSHIBA Model 50L2300U but can see and image when I take a flashlight to the screen


With both the backlight and audio not working. I suspect it's the power supply board.
You'll have to get a TV repair company. Get an estimate before bringing it in, and check reviews on the company.
If you don't know Electronics, don't open it up yourself! There are hazardous voltages even in flat screen TV's!

Jul 17, 2016 | Toshiba 50L5200U - 50in LED-backlit LCD TV

1 Answer

Why won't it turn on?


Hello Markes.
As Answered already in first posting....
Dont throw away your old power supply board yet!
Modern TV's use a switch mode power supply. Probably the board you replaced... but
They are often turned on by a digital (1 or 0) which triggers the supply to turn on. They don't use an old fashioned ac switch to put ac line voltage into the switchmode board.
The pushbutton on/off button is probably wired to the cpu board and connects through a connector to the switchmode board.
This triggers it to turn on.
Sometimes the digital 1 or 0 is held in an electrolytic capacitor. Like a tiny charged battery.
Check the top of the electro Caps for bulging. The x in the metal on top is to allow it to blow safely, But often they just bulge or leak brown stuff from the bottom.
If you find a faulty cap then carefully un solder it taking note of it's polarity. (Black stripe is negative). Replace it with a similar higher value. Eg if its rated at 10v then use a 15v or if its 1000uf then us up to 1500uf. Go higher not lower. and choose a size that fits the space.
Hope this Helps.... give me a tick?
Trevor
How to Replace an Electrolytic Capacitor

Sep 13, 2015 | Toshiba 50" 1080p 120Hz LED-LCD HDTV...

1 Answer

HOW CAN I CHANGE HDMI MAIN CIRCUIT BOARD FOR TOSHIBA MODEL #50L5200U, PART #75029243


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Oct 25, 2014 | Toshiba Televison & Video

1 Answer

Will not turn on, red light blinks but no sound or picture appears


Hello,
You have to open the back cover of the television to
Replace capacitor C2937 / a 10µF 100µF
Add a 63v capacitor of 1uF / 16V
Change resistance R3955 / 220K with a 4.7 K, if otherwise
the power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

I hope this may solve your problem but for you must have some technical knowledge about it.

Jun 10, 2011 | Toshiba Televison & Video

1 Answer

Hello my name is Amy & I have a 50 inch toshiba dlp (56hm66). I have no lights on or power. It's completely dead!!! I read the manual & followed everything about the lamp, how to restart, made...


Tv have no power at all?U already check the source?Yes,most likely the tv DM power supply board is dead or could be anythings on the highvoltage deflection circuitries on the tv.Check the DM power supply board like for dying or dead capacitors and circuit fuse breaker.Have no skills to do this call and get an estamate by tv Tech. to get it fix.

Jan 13, 2011 | Toshiba 50HM66 52" Television

1 Answer

I have a toshiba 52hm84 green light blinks 10 but the red lights steady i change the lamp still same.no picture


Hello,

Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

I hope this will help in solving the problem.....

Dec 31, 2010 | Toshiba TheaterWide 52HM84 52" Rear...

1 Answer

I have a Toshiba 51h84.I push the power button and I get a solid red power light. There is a click from inside, kind of like a relay clicking on. No picture, no sound. If I leave it on I get an occasional...


Tv have "LAMP" indication LED light blinking?The tv projection lamp is dead,require changing.Hearing alot of clickings sound too?Mean the board,call the Ballast board is dead.Require change the Ballast too.The Ballast board,the board that help to ignite the projection lamp.

Aug 06, 2010 | Toshiba 51H84 51" Rear Projection...

1 Answer

My theaterview tz61v61 has no sound or video i checked the fuses on the on board circuit and, with the ones i could see, seem to be fine i have little knowledge of tv ciruits and tv troubleshooting. ...


U get all solid LED lights indication front of bazel panel of the tv?U got power LED light flashes or no LED light at all?Check for DM power supply board,for dying leakage bulges up capacitors on it tops or puffing up on it tops.Replaced dying capacitors."LAMP"LED light indication on stay on or flashes.The projection lamp is dead,require changing,also hear alot of clickings too.Mean the the board call the Ballast board is also dead,require changing too.This Ballast board help to ignite the projection lamp.

Aug 05, 2010 | Toshiba TZ61V61 61" Rear Projection...

1 Answer

Toshiba 20HLK86 will not power on.


Power board it dead,require changing power board supply.

Nov 26, 2009 | Toshiba 20HLK86 20 in. LCD Television

1 Answer

How to change a fuse on toshiba 5793 when a power surge occurs


hello yes there are fuses. the main one is located in the power supply it glass type it might be black where it has shorted if you replace it and it blows again then you have a dead short in the power supply good luck. ps on the main there are wickman fuses these are solder in to the board

shaun

May 26, 2009 | Toshiba 57H93 57" Rear Projection HDTV

Not finding what you are looking for?
Toshiba 50L5200U Logo

Related Topics:

108 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5686 Answers

JohnLong

Level 2 Expert

62 Answers

Blake Whiteside

Level 1 Expert

22 Answers

Are you a Toshiba Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...