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L G LCD RZ-27LZ55 TV NO PITURE

FITTED NEW BACKLIGHT BOURD PITURE ON FOR 1SEC THEN OFF SOUND O/KI

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  • ALAN WICKENDEN Feb 29, 2012

    fitted new backlight bourd picture on for 1sec then off sound o/k
    fitted new caps 50v 100mf three on power bourd still same fault.

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If you are sure that the backlight board is good and that correct power is reaching your board then you might have a problem with the bulbs themselves. Also make sure that the board is grounded.

www.interliquidparts.com

Posted on Feb 25, 2012

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SOURCE: will my lg rz-27lz55 work with digital television

Hi dillonm893 If its the longcase black bezel with silver surround and speakers, then unfortunately no, it has no built in DVB-T receiver, you will need a freeview box of some description, sorry!

Posted on Dec 06, 2009

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How to fix my promac tv lcd 2051 lcd (sound but no piture)help me please


Back - light problem itself. 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.
http://electronicshelponline.blogspot.com/
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should trouble shoot. Contact any service technician. The circuit will differ with models and versions.

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Hello
Your Samsung tV is LCD type. It has no bulb to replace as in DLP projection televisions. there is CCFL [Cold Cathode Flourocent Lamps] are the lighting devices, which are fitted just behind the LCD screen There will be more than 12 numbers of them, accroding to screen size. If these lamps do not light up; that is; if you do not get any backlight with your LCD TV, the backlight inverter board should be troubleshooted. This is the board that supplies high frequency high voltage to these lamps to light up. Check this inverter baord first. Repalcing backlight CCFL lamps is really a skilled work, as they are fitted inside the panel, and to replace them, you have to disassable the panel itself.

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LG RZ-27LZ55; Red On & Green Standby toggle fine via remote; After switching On Green, about 6 seconds the screen flashes briefly displaying current mode but then remains black. There is also a small...


If everything checks out on the power supply - Grab a flashlight and shine it on the screen - if you can see a really dark picture you need an inverter board - if you can see no picture I'd target the main board with the input jacks on it. Inspect it for damaged components and get the part number off of the board and google it. see if there are known issues with that part number that have been identified or use www.shopjimmy.com to see if they have a part from a cracked screen tv.

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I was watching my Goodmans LCD TV when my picture went off but I still have sound any ideas whats wrong


you have no back light , the invertor pcb may be faulty or worse still the screen may have failed.
This needs a service engineer to diagnose properly

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1 Answer

Will my lg rz-27lz55 work with digital television


Hi dillonm893 If its the longcase black bezel with silver surround and speakers, then unfortunately no, it has no built in DVB-T receiver, you will need a freeview box of some description, sorry!

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Picture goes off after a few minutes but sound remains. what is the problem?


Hi,

There are a number reasons why this might happen:
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  • The panel has died - Need a new panel
  • A cable has worked itself loose or is broken
  • The inverter has gone - Need new inverter
  • The driver board is faulty
Thanks

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You need to replace the inverter board if you can find the spare part. Otherwise you need to replace the whole lcd panel.

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