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Samsung lcd model la32s81b sound is good .Fault is blank screen with no display or if u want white screen.

I have replace the power supply and still the same fault. I dont know whether the fault is on mainboard or t-con board Pls help. Thks.

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It could be either or. More then likely it is your mother board, which is the brains of your t.v.

Posted on Feb 04, 2015

Testimonial: "Thanks for the help .the faultis not on the mainboard ,it is the fuse on the t-con board was blowm. So l replace it. The tv is ok & already delivered.thanks ."


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Help diganosing Samsung UN50H6203 LED TV no picture issue. I replaced all the T-con, power supply, and mainboard. I replaced the mainboard and TV worked correctly for a few minutes before dying again.

If you wish to get some details; visit the site linked here. Pull up older posts.
faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent.
Search the site by type in the "brand name" to your device; [Exclude the model number], in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. See the site by a desktop. Mobile view has no search box. If you are viewing it by your mobile, see it in webview./

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Replaced the power supply/backlight inverter board and T-con boards on my Samsung 37" TV Seems worse than before

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Is there a protection mode for this lcd visio tv that can be removed for this tv to come on ?

Hello Donald the first thing I would like to Know what the model number of your TV is. But that's ok if you have a external power supply you could try this .Make Shure your TV is not pug In to the Ac outlet. We are going to see if you have a short or a load on your 12v line. Ok you wont to unplug the 12v source from the power supply board. Fine out what pin is the 12v's. Connect your external power source to that pin, apply the 12v and see if it is drawing to much current. If so check the boards for any very hot items. If you have a problem on the 12v line. This will find the part that is loading it down. This is the old way of finding a load on a power source. I hope this will help some. P.S make Shure there is no AC connect to the TV as you do this test and you have the plug off of the power supply board before using the external power source.

Jan 01, 2015 | Televison & Video

1 Answer

We have replaced the psu ,mainboard and t-con boards for the above model tv but it does not come on.Do you know how to remove any protection mode the tv might have? we have the remote for the tv. Than

How about the power supply board? Is it producing the correct voltages to operate the other boards? Is the voltage present on the end of the cables connecting the power supply to the other boards? Does the power relay click when the power on switch is pressed?

Dec 31, 2014 | Televison & Video

1 Answer

I have an Olevia Model #: 747-B11 P/N: FM1-047000E-S00 S/N: VLCD 79140278 Unit comes on gives you the Olevia screen than you get "NO SIGNAL" at the left bottom corner. Cannot switch SOURCE...

Hi Hernould,

First of all thank you for posting your question here at

My first advice is to do system reset by unplugging the unit from the outlet(AC source) for at least 1 hour to refresh it and back to factory settings.

If the symptoms remain the same after the system reset, this is an indication that there's a faulty board inside. The symptoms you've described indicated that the T-con board, inverter board, power supply board, backlight of your unit is working but there's a problem on the mainboard that's why it display the words "No Signal" and unresponsive to remote control and front panel button key.

The mainboard has a lot of circuitry that has each functions. Suspected faulty circuitry on the mainboard are the Microcomputer, AV circuitry, I/O circuitry, EEPROM. Click it HERE for the mainboard replacement.

But before you replace the mainboard I would advice you to inspect the electrolytic capacitor on the power supply board feeding the mainboard. If one of the supply voltage is gone to malfunction, the circuitry on the mainboard will be disable. Check the encircled capacitor.


Most of the faulty electrolytic capacitor has a physical indication of fault like bulged/dome at the top and can be easily identify through visual inspection. See sample picture below of faulty capacitor with dome at the top.


Also, don't forget to check if your unit is under warranty period before an attempt to open the back cover, avail it because the manufacturer will fix it for free.

Please let me know if you need further assistance.

Rating and feedback are highly appreciated.

Have a nice day!

Good luck and take care!

Kind Regards,


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Hello: The problem is on the power supply, there are two capacitors on the power supply near the plug that goes to the mainboard, these caps will look swollen at the top on them compared to the other capacitors in the circuit, if you know how to unsolder and resolder parts then this is a simple fix. The value of the capacitors on the board are 1000uf rated at 10 Volts, replace them with 1000uf rated at 16 Volts instead so this will not happen again. You can find them at any local electronics parts store, (Radio Shack) for instance..There will be two of them that look puffy at the top,they should all be flat so spotting them should be very easy...
Thks: Have a Happy Holiday...

Nov 22, 2009 | Televison & Video

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No power. T light does not illuminate.he monitor is plugged in 110 volt as usual. Now when I press the power button nothing happens. power on

1. Check whether power is there
2. Check the power sockets receives the power supply
3. Check the Female socket on power chord is fix with male socket on monitor
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1 Answer

Samsung lnr238w (23'') LCD TV has sound but no picture.

You got sound meaning the power supply and mainboard have no problem at all. Look at the back, have you seen back light lit up?
If there is light, the problem may come from T-con board.
If there is no light so the inverter board has defective.

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