Question about Olevia LT37HVS 37 in. LCD HDTV

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No picture My olevia 747 has no picture ... power is on ... BTW I am one of the designers of the HQV chip

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  • clamper1797 Oct 02, 2008

    Fixed it ... bad (intermittent) power cord

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LCD TV TroubleshootingThe defective LCD TV may have the following common symptoms:

Symptom: No picture on screen but LCD TV still has sound.
Solutions: The problem is cause by defective inverter. Replacing ivnerter will solve hte problem. Symptom: Screen flash on and off between 1/2 to a few seconds, but power indicate light stays on and TV still has sound.
Solutions: The problem is cause by defective inverter. Symptom: Blue Screen but no picture
Solutions: The problem is cause by defective Main Board(AD Board). In some cases, this problem may cause by the defective Screen Controller board. Thsi board is mounting on teh back of LCD TV Scree. Symptom: Power light stays on but no display and sound
Solutions: The problem is cause by defective Main Board(AD Board) or Power supply board. Symptom: No Power or Power indicate light does not lits
Solutions: The problem could cause either by defective Power supply board or defective Main Board(AD Board). Symptom: Screen is half dim and half bright
Solutions: The problem is cause by defective LCD Panel.It needs to be replace.

This is a power supply problem. Try to check the fuses ,fusable resistor ,capacitor and transistor in power supply board.

Hope it may help you;

Regards,
VOTIT

Posted on Oct 02, 2008

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My tv sound keep s going out


Check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/

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My olevia 747 B11 not power, a blue led is just hanging


From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.
If blinks continue without any pause, the main board is faulty.

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I have an Olevia 226-s11 that shows the Olevia screen when powered on but no picture thereafter. Sound works, but no picture.


Back-light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
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Jan 12, 2015 | Olevia Flat Panel Televisions

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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 Fixya.com.


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.





12_10_2011_12_02_32_am.jpg


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.




12_10_2011_12_04_44_am.jpg



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,

Mjsazon

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My pwoer supply blew up as well part number HGP 180-p240JIFE


Ladies and Gentlemen,

Relative to Olevia TV Power Supply Problems Solution provided by: kb8tez Matt, the problem he had was Electrolytic Capacitor CS21. Upon careful examination of the Power Supply Circuit Board I find that CS21 is in parallel with CS22. Simply replacing BOTH Capacitors makes for a more permanent fix. Radio Shack P/N 272-1032 1000UF 35V Capacitors @ $1.59 each plus tax makes a very inexpensive repair. Apparently the same power supply circuit board is common to many different Olevia Models.

Fastest Robe

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