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Seiki SE222FS won't come on even though red standby light is on

Replaced power supply board per suggestion but still have same problem

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 3 Answers

SOURCE: tla-04641c wont power standby light comes on and

Hey listen bulldog, I am just having the same problem! Exact same thing, standy led on, power supply and boards seem like new, but tv doesnt power up! I read a schematic at http://www.polaroidsupport.com/polaroid/docs/TLA-04011C_TLXB-4011_TLXB-4241_ServiceManual_20070613.pdf and if you follow it through it states, to change the control box!! I have fair confidence that I can replace the control box because I have experience in soldering and have built my own computers before as also swapping major components in laptops as well! So I am willing to take the risk to fix this but heres the problem!! I dont know where or what the control box is or where to go to buy a new one! POLAROID customer service is aweful, unless you know the manufacturing plant and can go there, they wont be much help! I hope this info helps you, if you got the problem fixed can you tell me what you did or where I can look to get my issue resolved! Need anything else just post here!

Posted on Feb 27, 2010

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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

  • 8909 Answers

SOURCE: Sony Bravia KDL-40S3000...standby red light blinks

There may be no horizontal ouput, Check C515 & 516 and the jungle IC, IC206.

Hope that helps

Posted on Feb 28, 2011

welcomejee
  • 10594 Answers

SOURCE: When plugged in, Sony Bravia

Check BL_ERR pin on back light inverter board, what is volt reading that you get before and after tv shuts down? Let me know to proceed.
Thanks.

BTW, I really enjoyed your quote * I don't trust the blinking anymore *
.

Posted on Aug 12, 2011

spr1949
  • 1182 Answers

SOURCE: 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.

Posted on Aug 03, 2012

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hi test the large diodes on the power board these can stop the led from firing up, thanks, ps send me a picture of the power board i'll show you the diodes

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My sons Seiki television will not turn on. When I plug the adapter cord into the tv the red power light does not light up. What could be the problem?! Sn: 2410MO450X13709 Model number: SE24FT11-D


Fault to the main power supply regulator section. Either it will be a separate board, or the part of main 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. Pull up older posts.
http://electro-medical.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.

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I have no power or red/standby lights. I'm wondering is the problem the Power supply board or main board?


Power supply regulator section. Either it will be on a separate board, or on the part of its main 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.

Aug 25, 2015 | Sony Bravia KDL-32BX300 32" 1366 x 768...

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If audio is OK, its back-light section circuit need to me checked. 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. Viewing it in "Mosaic" or "Magazine" will make surf easy. Surf the site with patience. Pull up older posts. Do a search by type in the brand name of your device at its search box. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/

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Tv won't turn on rom standby mode


Main board fault. Contact the authorized service center. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Pull up older posts. Surf the site with patience. Do a search by type in the brand name of your device at its search box and press "Enter".
http://electronicshelponline.blogspot.com/

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1 Answer

SEIKI TV Won't power up


The main power supply regulator board to your TV should be troubleshooted. In most cases, it might need card base replacement.

May 28, 2013 | Televison & Video

1 Answer

SEIKI TV Is not getting any power


Power supply regulator fault. Check all the diodes and capacitors.

May 28, 2013 | Seiki Televison & Video

1 Answer

My seiki tv shut off while i was watching it and it wont turn back on.... the red standby light and front panel lights work so the tv is getting power however it will not turn on with the remote or the...


Someone is going to have to open it and examine the power supply board in the set first for signs of damage or puffed up caps and then check for various voltages, This set is likely to be a problem for parts as all brands can be as they only sell circuit boards, the question becomes which board is bad?

Dec 11, 2012 | Seiki Televison & Video

1 Answer

ELCHW402


The fact that you have the standby lights tells me that your 5VDC standby power supply if functional. You need to verify that you are getting the "power supply on" signal from the main board to the power supply board. It should be anywhere from 3.3VDC to 5VDC. If you are not getting that signal from the main board, you have a problem with your main board.

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1 Answer

My tv showing an amber light instead of red standby light and now it won't switch on


Good day!!!


That problem is usually cause of faulty capacitors on the power supply board..

Just follow this instruction to fix your TV..

1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
5. Some of the capacitors not bulged so its better if have a capacitance meter

Jun 20, 2012 | Televison & Video

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