Question about Sony BRAVIA KDL-52W3000 52 in. LCD Television

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How to change the power supply board on a Sony kdl-52w300

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6ya6ya
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Posted on Jan 02, 2017

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tvhelp-Dave
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SOURCE: My Sony KDL-26S3000 won't turn on it well get stuck in standby

Please see the troubleshooting chart, BU1 board part # A-1268-869-A, cost approx $230.7685cfa.jpg

Posted on May 23, 2010

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SOURCE: Sony Bravia KDL-40S20L1 lcd tv has no power no lights nothing

My Sony Bravia LCD Model-KVL37S400A is not getting the Main Power supply. The LCD is not getting switched on. When i am trying to switch on the set nothing is happening.

Posted on Dec 24, 2010

  • 1 Answer

SOURCE: SONY BRAVIA KDL-26U2000 / Electronic Board broken

Try to unplag the power cable for 15min.

Posted on Jan 10, 2011

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SOURCE: My Sony KDL-32M3000 has dark

It will be either BM board (Video Processor board) or Tcon Board (top side of panel). I have similar problem...my TV turns on, lamps turns on (you can see them from back side panel holes) but just a dark blue picture appears with no image (like picture when external input is selected without signal), no OSD appears....some times I can heard audio (using Antena).
I'm thinking getting the BM board.

Posted on Jan 10, 2011

SOURCE: I got a Sony Bravia

http://www.smpcshop.com/KDL-40WL135-KDL-46WL135-p-8895.html
Above is a link for a service manual.

Hi, well I applaud you for starting in the right place, The power supply, as, if, that isn't right nothing else can be. But you simply cannot do anything without a Service Manual. In this it has everything one needs to repair the set. OK if it is shutting down, after that amount of time, of working and then faulting, then it is most definitely a "Thermal" problem, the way we "Find" problems such as this is "Freeze Spray" you use this on each component that is suspected of being the "Culprit" and you will soon,find that errant component. Now also not every fault is a Capacitor, I see many, many people that think, that Capacitors are always the "Culprit" now while that may be true in a few cases, a faulty Electrolytic Cap, or ordinary, Cap goes faulty, this is only a SYMPTOM, something has damaged those caps causing them to "Fail". One MUST always find the root "Cause", otherwise if you just treat, the SYMPTOM, the "Cause" will just make the "Symptom" come back, in short order, as the prime cause still, hasn't been fixed., Now Capacitors hate AC ripple, or Over Voltage. Thats it. Oh.. and Heat, if these Capacitors, are too close to a Heat Source, then thats a prime cause of failure. Resistors, hardly ever go faulty,and if they do, it is generally obvious. However it doesn't hurt to check values with our Multimeter. Remember though resistors are made, with up to 20% tolerance from stated value, as such, are not too critical, unless in Timing circuits etc. Always check, the Values, of resistors, as with any other component, with the power OFF. Now Diodes especially "Zener Diode", are another thing to check, those and ordinary "Signal Diode" should always be suspect. next we have Transistors and IC's. The Transistors MUST ALL be checked to see if they have a good, "Junction" this is done, with our meter set to "Diode Test" and usually are about 0.6 to 0.7. With IC's you must check, voltage levels, or Logic Levels, going in and out, have a look at the circuit diagram, and it will tell you what they should be. It is a good idea to always measure the Power Supply voltages, see if a "Rail" is Low, that will be because some component has gone somewhat or all short circuit, to Earth, now, if the "Rail" is Higher, suspect an "Open Circuit" component, like a Diode, or Transistor. The voltages expressed in the manual are spot on, ANY variation MUST be investigated. I have been doing all this for over 30 years now, and I do indeed wish, we could have a set of "Symptoms" and be ables to say.. "Oh that;s the so-in-so and replace this" however unfortunately this although does happen, most "Symptoms" can have literally tens, of "Causes" all often "Interlinked" One simply has to do a methodical troubleshooting procedure, and always think, "are my Voltages Correct" as this is how, you Fix the problem, by making them so. Keep up the good work. If that link above doesn't furnish a Service manual, it is imperative you get one, even if you must pay for it. It will pay for itself in about 2 mins.
Gee it seems that you have replaced just about the entire "Guts" of the set, in the industry we call this the "Shot gun" method, however it seldom works in reality. One really needs to isolate the Cause, of the "Fault" and repair that and also any damage done by that. As if one doesn't remove the "Cause" it will simply fault again when the "New" bit is connected up. One needs to get the unit going section by section, testing and proving the prior section before connecting up to the next, which also must be tested to make sure that what you are going to connect will NOT damage what you are connecting it to.
Also unfortunately, these LED's Blinks, are NOT an error code in actual fact.
What you need to do is use the service manual, and follow through the troubleshooting steps, to isolate and hopefully repair your problem.
Basically it is all about voltages and if they are correct, a Higher voltage than stated usually means a component is Open circuit or a very high resistance, whereas a Lower than stated voltage usually indicates a Short Circuit, or low value resistance component, is "Faulty". These are all in the SM, as are the waveforms that must be checked, it is indeed very difficult to repair electronics these days without specialised equipment and even though I have over 30 years experience i find it difficult, so good luck.

Posted on Feb 24, 2011

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Sony Bravia KDL-xbr4 Replaced TCON board All worked great for a week Had an issue w/ HDMI cable at the box fixed it and now tv comes and the goes off to 6 blinking red lights


6 red flashes- backlight issue, bad main board, or power board or inverter boards- check standby volts on power board. "backlight on" volts should be 3-5v from main logic board then 24v to inverter


Have this from a youtube link find BUT
Better is to look first also on bad leaking or bulged capacitors thats better to replace in the bad components to get a repair because active components died on bad capacitors but after a while because on the build-in protection circuit by faults like deformed or leaking capacitors and even several fuse resistors then after replace a complete board again after a while you will may be get the same kind of problems again, take If you find some or much bad capacitors replacements 10 volts dc higher . begin with control on the power supply first of all.



Sony Bravia TV kdl red blinking led light error codes solutions Sony KDL 40XBR4 KDL 40XBR5 KDL 46XBR4 KDL 46XBR5 Service Manual

Jan 05, 2017 | Sony Televison & Video

1 Answer

Red light flashing 4 times


Malfunction of 5V line
(Voltage Supply to FE, etc) please check 5v power supply other wise change
BG1TW MOUNT (KDL-32V4000)
main system board

Jan 09, 2014 | Sony Bravia KDL-32V4000 32 in. LCD TV

2 Answers

Sony kdl-52s 4100 power supply ok but no sound and display


Well, if the power supply is in good working order, you will need to verify that the proper voltages are getting to the main board. If the main board is getting the proper voltages, I would bet you have a defective main board. The video and audio signals are generated on the main board. Expect to pay $100-$150 for a replacement main board.

Nov 24, 2012 | Sony BRAVIA KDL-52S4100 52 in. HDTV LCD

1 Answer

B+ Over Voltage Protection problem Sony Bravia KDL 32S2000


Switch off TV manually, switch off power, remove plug and retry after 48 hours.

If problem persists, please refer it to a qualified service technician.

Aug 02, 2012 | Sony BRAVIA KDL-32S2000 32 in. LCD HDTV

1 Answer

How do you change sony kdl 40s4100 power supply


very easy there are just a few screws that hold the board to the chassis and then its a simple unplug the old boards wires then install the new board and replug the wires.

Jan 20, 2012 | Sony Bravia KDL-40S4100 40 in. LCD TV

1 Answer

My sony kdl 40 u 2530 e is not staring properly. the red led signal blinking 4 times periodically .any idea about the problem? If i turn off tv for hours then it starts for 2 minutes and again the same...


The tv power supply board have problems and the caused,check the tv power supply board have it fixed or services by u or tv tech.most likely those capacitors parts are dying on the tv power supply board like bulging or puffing up.Take the tv aparts,check the tv power supply board that board where the power a/c cord plug into it.Carefully check for capacitors parts for bulging and puffing up on to it tops.Changes all these dying capacitors,tv should be work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Jun 18, 2011 | Sony BRAVIA KDL-40V2500 40 in. LCD HDTV

5 Answers

Tv turns off after playing 15-20 minutes, then it will shut down more often. the timer/pic. off button flashes six times. thank You.


6 times power/ standby light blink error shows problem of back light inverter board in your Sony KDL-37M4000 tv as per mentioned in related service manual.
Check back light inverter board to fix the issue.
Thanks.

Jun 17, 2010 | Sony Bravia KDL-37M4000 37 in. LCD HDTV

1 Answer

POWER LIGHT DOES NOT GO ON (KDL-32XBR6)


The power supply board is dead.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Apr 27, 2010 | Sony BRAVIA KDL-V32XBR1 32 in. LCD HDTV

1 Answer

Sony bravia kdl-52w3000, turn tv on, no picture or


Most likely this is caused by a defective main board. Changing the main board will fix the issue about 95% of the time.

To be absolutely sure, the voltages need to be checked on the power supply. If they are not the values listed in the service manual, then you should replace the power supply instead (accounts for the other 5% of the time).

Oct 07, 2009 | Sony BRAVIA KDL-52W3000 52 in. LCD...

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