Question about Sony Kdl-40ex400 Power Supply Aps-254 1-881-411-22

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My sony tv is dead ihave 3.28 standby volts and 3.28 bl err volts and .128 volts .004 power on volts

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: sony tv model klv-32u100m dead standby 5 volts ok

most probably is (a) board ..very common on these models.These boards are made by RoHM.These are similar and used in maganvox,philips and others..Very common breakdown

Posted on Nov 30, 2007

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eagle338
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SOURCE: sony kdl-40s4100 no red standby light.When power

Does it make a click sound when powered on?

Posted on Nov 02, 2010

gopakumarg43
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SOURCE: I have sony led tv model KDL-46EX523 there is a standby light but when i press the power on the unit standby light goes off and tv wont power on.dead. Checked capasitors and fuse are good.

Fault to 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.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on May 30, 2015

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1 Answer

I asked this question previously about a power supply on a Panasonic TCP50C2 TV . Ihave no power coming out of the 5 volt standby terminal . The tv took a power surge ,but the board doesn't show any d


Your Panasonic TV is a plasma TV? If yes is a knows issue with Panasonic plasma TV's , the power supply board might have went bad, it is a complicated issue as V boards go bad also , you will need to take the TV to a repair center.

Dec 29, 2014 | Panasonic Televison & Video

1 Answer

Lcd tv totally dead


Follow the money or the voltage here- standby power appears to be up but if so why no standby light up front? Have you checked all the caps in the supply? The 5 volts should be for the micro so this sounds like either main supply/standby not up or something pulling it down..

The real clue here is set has no power indication of standby---you are aware of the reason the caps fail in the standby power supply?

Just trying to get an idea of how much expertise you have.


3_30_2012_1_16_40_pm.jpg

Mar 30, 2012 | Samsung LN32C540 32 in. LCD TV

1 Answer

Sony TV KDF-E42A10 Projection TV Standby light flashes 4 times. TV turns on for 5 seconds and turns off with standby light flashing 4 times. TV will not stay on.


Hello,


Your power supply board is not yet dead, you 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.

Hope this helpout in solving the problem......

Jan 11, 2011 | Sony KDF-E42A10 42 in. LCD Television

1 Answer

I have a sony 32 inch lcd tv and if i leave it in standby overnight it sticks in standby no keys work, if i turn it off at the socket then back on its fine,any ideas?


There are two possibilities for that symptoms,
Either standby power supply becomes low (less then +5 volts) so system control chip lose its function OR system control itself stops its function.
Unplugging TV resets system control and it starts work again.
First confirm standby supply is OK, if found good and correct +5 volts, then replace main board that has system control chip.
Let me know exact model number of your Sony TV written at back to find out boards and prices.
Thanks.

Nov 03, 2009 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

I have 36in wega, it powers up, i can hear it but no screen,


Ur high voltage is dead.FBT, the flyback transformer is dead.The big block of plastic with a red wire with a
cap hook to the CRT(tv tube).Yes,If u have it waranty,they properly did not replace it just resolder the prob.now the part it dead.

Sep 28, 2009 | Sony FD Trinitron WEGA KV-32FS120 32" TV

2 Answers

Sony KV-27FS210 won't turn on: 5 blinks


If you have little experience of TV repair then take off back cover of Sony Kv-27FS210 and find Screen Control Knob on flyback transformer, turn that knob slightly CW or CCW and turn on TV to get picture. I think you need to turn ON TV few times to get proper adjustement of screen volts.

Above said procedure is for non-tech person.
(Tech person will adjust screen volts (G2) as per procedure mentioned in service manual with proper tools.)

Jul 28, 2009 | Sony FD Trinitron WEGA KV-27FS210 27" TV

1 Answer

PAUSA tv problem standy by is on.


there should be +5 volt ,but yet no power on,check h out transistor for short

Dec 15, 2007 | Sony ICF-CD555TV 7 in. Portable Television

1 Answer

Sony tv model klv-32u100m dead standby 5 volts ok


most probably is (a) board ..very common on these models.These boards are made by RoHM.These are similar and used in maganvox,philips and others..Very common breakdown

Nov 30, 2007 | Sony BRAVIA KLV-32U100M 32 in. LCD...

1 Answer

Sony KV-32S22 32" TV Problem


Intermittent dead with red standby light on, but won't switch back on, comes back on it's own, won't respond to remote or local controls
Low 5v standby supply due to diode D869 faulty, check by replacement

Nov 23, 2007 | Sony KV-32S22 32" TV

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