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Hi all can any one tell me how to find out the part i need for power supply board the tv is soundwave c19zf led the board is cv306l-a20 component has blown i cant make out what it is back of board sh

Google tryed schmatics for this nothink showing

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Posted on Nov 23, 2014

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Can you tell if LED tv has bad LED strips before changing LED Board/Power Supply (as they're in one piece on a lot of TVs)?


This is not easy to diagnose, either use a meter on the power cable to the led or check the leds one at a time

Feb 24, 2016 | LG 47LN5400 47" LED TV 1920x1080, 120 Hz....

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Tv flashes good picture for 1/2 second and then dark. Picture is there but really dark. How can I tell if it is an led strip or the power supply board


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.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced.

Jan 28, 2016 | LG 47LN5750 47" LED TV 1920x1080, 120 Hz,...

1 Answer

How to fix LG 47LN5200 TV?


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/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

Nov 30, 2015 | LG Televison & Video

1 Answer

How do I fix problem with Vizio m550vse LED TV? Flashlight test reveals picture and no back lights are visible.


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/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

Nov 20, 2015 | Vizio 55" Class LED 1080p 120Hz HDTV,2.49"...

2 Answers

How to find diagram for power supply board cv306L-A-20 component blown cant read number to order part soundwave c19zf - Led i can read a bit of it 34 is on component if i turn board over it has Q1 und


I don't see any schematics either but there are several boards listed on ebay. Perhaps you can contact the seller and ask them to kindly read the component value to you.

Dec 05, 2014 | Watches

1 Answer

I have a sony bravia kdl40v2000 lcd tv stays in standby mode with green light on all the time, no picture no sound, suspect capasitor fault on power board, which capasitor need replacing


There are no paticulator capacitors components parts are dying and or leaking in sequences in any forms of numbers on the tv power supply board.It could be any numbers capacitors components anywhere in the tv power supply board could be dying and or leaking.U must have to take tv parts and examine the power supply board carefully for dying and or leaking capacitors components parts.Very easily to spots dying and or leaking capacitors components parts because 90-95% of the times they're alway puffing and or bulges up on to it tops it is looking like it about to be exploded out of it cylender container.If the tv every times u turn it on the tv power the tv LED power light indicator are alway stay on a good solid green color,LED power indicator light never blinks or flashes at all.Mean the tv does not have a tv power supply board problems,mean the tv it have a problems with it the main logic Tuner signal board problems,that is the board where the tv incomming broadcasting signal wire plug into it.Tries those websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish main logic Tuner signal board for the replacement.Because this main Logic Tuner signal board components are all in micro chips and are all in micro surfaces mounted on micro surfaces mounted on components parts by a circuits printed and put it on by machines.

Dec 03, 2011 | Televison & Video

1 Answer

Will not turn on, red blinking led




HI,
It is caused by failed power supply due to bad capacitor,diode, shorts circuits in the backlight inverter boards.You need to replace these defective components.open the TV and read the power board/panel with a meter, detect the bad component and replace it.
Swith off the TV for a while and then open it to avoid the shock.

Thank you

Nov 04, 2010 | Akai LCT3701ADPA 37 in. LCD TV

1 Answer

Turn itself off as soon as you turn it on (37MF33ID/37)


in the lcd tv there are three main parts
1)the inverter board(pannel)
2)the main board .
3)the power supply board.
----------
if there is no power at all them main board is faulty.if no front led light is coming ON there is no power .so the main board is faulty.on the main board there is a fuse located you have to replace that and check first if still no power main board needs to be checked and replaced
---------------
if there is sound but no picture and front led light is ON then its inverter board panel problem.if this is your case replace inverter panel.its located in the lower side of the lcd in the inner area below the main board.
-----------
but if there is just front led light blinking , but no picture or sound then its power supply board problem.
------
but as you mentioned that the tv turns ON for some seconds then automatically turns off this indicates that the power supply board is not faulty but there is a component on the board that is getting over heated because its got weak so due this overheating of a component the circuit gets short and tv shuts off.
on power supply board there are some capacitors and ic located.if any of the component gets short or budged up then it short the power supply board.so you can check the components on power supply board with multimeter and get it replaced by using soldering iron.
----------
also you can get new replaCEment power supply board.this clears the problem completely.
---------
you can get the required board and components at ----- www.partstore.com -------- or from ------ www.radioshack.com ----
---------
if you are not familiar with doing this you can get it done by local tv repair technician familiar with this model tv.
-----------
This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya.

Feb 20, 2010 | Philips 37MF321D 37 in. LCD Television

1 Answer

I have a z20lcd1 tv and it has no picture


in the lcd tv there are three main parts
1)the inverter board(pannel)
2)the main board .
3)the power supply board.
----------
if there is no power at all them main board is faulty.if no front led light is coming ON there is no power .so the main board is not faulty.on the main board there is a fuse located you have to replace that and check first if still no power main board needs to be checked and replaced
---------------
if there is sound but no picture and front led light is blinking then its inverter board panel problem.if this is your case replace inverter panel.its located in the lower side of the lcd in the inner area below the main board.
-----------
but if there is just front led light blinking , but no picture or sound then its power supply board problem.
------------
on power supply board there are some capacitors and ic located.if any of the component gets short or budged up then it short the power supply board.so you can check the components on power supply board with multimeter and get it replaced by using soldering iron.
----------
also you can get new replaCEment power supply board.this clears the problem completely.
---------
you can get the required board and components at ----- www.partstore.com -------- or from ------ www.radioshack.com ----
---------
if you are not familiar with doing this you can get it done by local tv repair technician familiar with this model tv.

Nov 03, 2009 | Zenith Z19LCD3 TV

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