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The tv has no power at all fuses are ok.the fault is on the sip400b board.

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  • 92 Answers

Replace the Powe Supply in question.

If you understand the circuit, then will have the IC's and other components you need to repair it yourself.

Posted on Sep 08, 2009


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1 Answer

Plasma 50 inch tv with no audio and video...powers on and stays in stanby.

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Oct 15, 2016 | Televison & Video

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B n O 8000 speaker dead, is there an internal fuse, output from tv ok mains fuse ok, no mains indicator light hence question

Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.

Sep 05, 2014 | Televison & Video

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TV will not power up, no blinking lamp

hi caps don't have to be swollen to be fault that blinking light means you have no 5 volt standby, you need to check diodes capacitors transistors resistors may be best to look for a tech in your area, hope you get it working


Jan 25, 2014 | Sony KDF-E60A20 60 in. LCD HDTV

1 Answer

Startup takes hours, help?

The clicking suggests a power supply issue, a old trick I use in cases like this is a hairdryer, Try to heat (don't melt things) different boards carefully until you get a dramatic reaction, considering the brand which I do not like much less endorse, what is there to lose.

If you pinpoint the issue to one board try to locate that board.

Dec 11, 2012 | Samsung LCD-TV LE40S81B 40 in. HD-Ready...

1 Answer

Hello. My tv will not turn on. I metered the power circuit as far as I could, and it looks ok. The fuse on the control board is good. The power switch meters good. When the tv failed I heard a small...

It sounds that the power supply regulator section or main board has the fault. Check it with the help of schematics. If you are not handy, seek any technician's support.

Jun 18, 2012 | Emerson EWF2006 TV

1 Answer

Slim Samsung HDTV will not turn on

You haven't given the exact model number to your TV here. Anyway, check its mains fuse [can be located at its power regulator board] first. If it find opened, do not replace an other; without rectifying the fulat inside the power board. If protection fuse should blow up, surely there will be some reason for that, including short circuit or failure of components.
If you replace the fuse with an other one, the fuse that you will insert will also blow up, and may cuse more faults to other components. OK.

Feb 07, 2012 | Televison & Video

1 Answer

My haier tv model no. hl42e wont come on

If its power indicator LED at the front panel is also do not light up, there is some fault with its power regulator board inside it. Open your tV, and locate the power regulator board. It is easy to locate as, AC power goes direct to it after ON/OFF switch. Check the protector fuse [a glass cartridge type will be used] is burned out or not. If it ahs burned out, replace it with same type in both size and ampere capacity. You can not is rating on its rims; or it will be markde on the printed circuit board itself, under the fuse holder.
If the newly inserted fuse also blow out as soon as you switch ON the Tv, never use anymore fuses, as there is some direct short circuit with that power regulator board. It is better to replace that boad as card basis, than making any "surgery" to it. OK.

Oct 11, 2011 | Haier HL42E LCD TV

1 Answer

Power fuse blows when you push power button

You haven't specified anything about the description [brand name, model number etc] of your TV here. Anyway, if the power fuse blows instantaniously as you switch ON the set, no doubt that, there is some dead short circuit in the power regulator board of your TV. Never put no more fuse or switch ON the set until this fault has been retified. Sometimes there will be some bulged of shorted capacitors in the power sully regulator bard of your tV. Check for it. I'm herewith attaches the picture of a power supply board of Tv, [not with your's;] for you to identify what a bulged capacitor will be. If there is such capacitors on your TV's power supply baord, just repalce it with same size and capacity. Its capacity will be marked on it. gopakumarg43_51.jpg
See the bulged capacitors, marked with red arrow. You can see a good one, on the top right part of the board with flat top. You haven't given anymore details of your TV here with your problem post. So I could only give you this much information and repair tips. If you want any more assistance from me, feel free to get me by FixYa. OK.

Sep 09, 2011 | Televison & Video

2 Answers

Hi my pxt-50xd1 plasma TV wont power up the power board keeps blowing both the 8amp fuses every time the power is turn on the transformer fuse is ok when you disconnect the main power board can you help...

i have 2 of the power boards now i am struggling with, but there's a small capacitor that has gone on both of mine, it's labelled c5017 and is 10pF according to the service manual and i cannot remember the voltage but i'm using 630V ones to be safe but i think the orginal is much lower, so best to test that cap to see if it's causing the problem

Oct 16, 2010 | NEC PXT-50XD1 50 in. Plasma TV

1 Answer

Tv will not power up

no reset button ,sorry. The problem you describe is pretty common with this model as its a fault in the horizontal drive circuit or in the main power supply and without the proper service manual as well as the prober tools and equipment this set its not gonna get fixed. there are no panels or user changable boards as it is a solid state set. could repair this board or exchange it with a referbished board but it would still requir some adjustment that a user may not be able to handle. time to call the pro.. Sorry couldnet help ya more.. Good Luck.

May 23, 2006 | RCA MM36110 36" TV

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