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Tv will not turn on light turn on an it falshing

Put in new power board an still not working

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Model KDL32BX300. Why won't it turn on?


PLEASE CHANGE THE INVERTER BOARD BECAUSE YOUR 24 VOLTS ARE SHOTED

Dec 20, 2015 | Sony Televison & Video

3 Answers

My Coby 40 inch HDTV wont turn on. The blue light on front (standby?) is on but I can't turn it on. Help I don't wanna buy a new tv


I had a 32" Coby that did the same thing, turned out to be a defective main board. The main board wasn't sending the 3.3v signal to wake up the power supply. In my case I sold the tv for parts because it wasn't cost effective to replace the main board. It sound like your main board

Apr 10, 2012 | Coby Televison & Video

1 Answer

Misubishi wd-52631 DLP TV, it shuts off suddeny. when turn it on again, the green power light is flashing, then steady green, then shut off again. the lamp light is NOT falshing or red. the status light...


Hi, have you replaced the lamp after 2-3 yrs of usage? The lamps used by mitsubishi tend to last around 4000 hrs 1-3 yrs.It is common for the green light to light up.Other common failures are the ballast which is the board that powers the lamp.Also check if its not overheatin, dust out the fans.Heres where u can get the lamp or ballast http://www.discount-merchant.com/SearchResults.asp?Search=wd-52631

Apr 19, 2011 | Mitsubishi WD-52631 52" Projection HDTV

1 Answer

TH-42PX70B wont switch on - standby light falshes green but TV won't switch on


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.


Take care in solving the problem....

Dec 02, 2010 | Panasonic Viera TH-42PX80U Plasma TV

1 Answer

Hello. I got a Lg tv which i brought 3 years ago. After putting it on standby usually the red light falshes 3 times until it turns blue and comes on. since last week the red botton just flashes...


First disconnect all power to the TV for about 30 minutes this gives the filter caps time to discharge as this resets the logic section upon power-up. After 30 min try powering back up if you still have the same problem then there's a problem with the power supply board. You may have some caps with high ESR levels which can cause this kind of fault. But it could other components on the power board causing a similar fault like switching transformers that have shorted, or opened either which can cause EDDY Currents which will cause feedback in opto-couplers and shut the TV down. Let me know what results you get after the 30 minute power-down.

Oct 18, 2010 | LG 37LG30 37 in. LCD HDTV

2 Answers

Vizio TV wont turn on after three weeks no use


My vizio recently did the same exact thing. Vizio sent an HDTV tech out to fix it and it was the power board. He put a new board in (took 15 min) and the tv works like new.

Jan 05, 2010 | Vizio L32 32 in. LCD HDTV

1 Answer

SVA 42 inch plasma (HD4208TIII-PDP)sometimes turns on


You Need a new Power Supply, part # LJ44-00025A
buy it here for $139 http://www.adc-ast.com/
I have my tv working like new.
If you want this time the power supply last, do not turn off, justpress tv/video button to switch input source, let the tv in sleep mode.

Credit: User IMJR

Mar 26, 2009 | SVA-USA HD4208TIII-PDP 42 in. EDTV-Ready...

2 Answers

Mikomi flashing blue light tv will not work


If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |


On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem

On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.

On Rear Projection : check lamp, lamp ballast, power board, and convergence.

On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.

Mar 23, 2009 | RCA Mikomi 5290925 15 in. LCD TV

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