The main power supply regulator section circuit fault. 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://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.
SOURCE: samsung s42sd-yd01 plasma television wont power up
Hallo, der Fehler liegt auf einem der Boards und ist laut einem ehemaligem Mitarbeiter der Firma Innowert nicht reparabel weil es keine Teile mehr gibt, das entsprechende Board müsste erneuert werden. Meiner hat das gleiche Problem. Wenn man von hinten auf den Plasma schaut das Board mit der Alu - Abdeckung die man einfach abnehmen kann soll es sein. Bei meinem habe ich auf dem ganz linken Board vier defekte Kondensatoren entdeckt und werde ides mal erneuern, mal sehen ob es danach funktioniert. MfG
SOURCE: my sony bravia tv is flashing red stand by light
Try leaving the TV unpugged for 30 minutes so the TV can reset itself.
If that doesn't work, most likely the TV has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, you can purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you flashing red light codes, circuit diagrams, test points, and part# lists. Usually, cost under $20.
I hope I shed some light on the subject for you.
SOURCE: LCD TV, No Power, No Standby LED, Buzzing sound from Power supply
sounds like either way your power board is bad- do you intend on replacing a component? I would look for Puffy caps- you know- leaking from the top-
SOURCE: Protron PLTV-3250 back light inverter?
I use hair dryer for locating bad electrolytics capacitor for almost 30 years. When its warm up the chemical reaction works more than when it is cold, that is one symptom of bad electrolytic cap. When you cool down the cap with freeze cooler then the set will stop working again. I would say go ahead and replace those capacitors on th inverter board, make sure to use low ESR capacitor such as PANASONIC FM series from DIGIKEY.COM. I use these cap for repair for many many years with great reliability. The inverter board should have 24vdc feeding it.
Testimonial: "Thank you very much for the information. This inverter board is not a typical push through hole type board, anything i should be aware of doing this?"
SOURCE: 13 blinks on standby light
Hello,
If you can post a few pictures of the boards in the unit to our forum at: http://www.ccl-la.com/forum/index.php Our techs will look over the boards and offer information to guide you in the repair.
I hope this helps, if so please rate our solution.
Buddy
Corporate Computer
www.ccl-la.com
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