Question about Samsung Televison & Video
Recently a lightning strike hit my apartment building and caused a power surge that damaged several people's electronics. I have checked capacitors, resistors, diodes and the ceramic fuse, and none of them appear to have a short. It seems like it could possibly be a transformer issue, since one of them seems to be close to where the humming sound is located. Could replacing the transformer let my TV power on and actually work? (apologies for the short details, I originally wrote a few paragraphs with ~200 words, but somehow it did not save and I didn't feel like rewriting it.)
SOURCE: Fuses blow afer power surge
These are switch mode power supplies and very difficult to
repair. If you don't find all the blown components, they just
blow up again when you try it. If that model has a separate
module for the supply, you can try and order a replacement, but they
usually are too expensive.
What model is it? Maybe I have a junker I can take the supply from for you?
Posted on Jan 02, 2008
I have the same problem. TV was JUST out of warranty. Sceptre part number is X37SV-Naga and the cost - $285.00 plus $20 shipping. Non-refundable, no returnable.
The TV is of course going to de-solder the board within a year again, so either a good heat sing on both thermistors is in order OR a law suit against Sceptre is in order for putting us a risk of fire.
Posted on Jul 09, 2008
The replacement of the power supply is quite easy. You will have to remove the base if applicable and the back cover, once you remove it; you should see the power supply.
Click here to see how the power supply looks like and availability or Click here to find a cheaper one.
I can also repair your power supply. If you need further assistance you can write to [email protected]
Posted on Jan 05, 2009
Confirmation: Lee2fixit's solution also worked on a Sanyo 19" TV Model DS19580with 'buzzing relay'. Chassis carriessimilar relay (Type DG1U 12VDC II TV-5 8A 250V~ also by DEC) at location RL601and a 25VDC 470uF electrolytic cap at C622. After confirming the relay was sound and finding no obviously faultedcomponents tied to it, replaced the cap. Bingo, normal operation and a quiet relay. Will post a follow-up ONLY if the fix failsbefore the rest of the TV .. it's almost10 years old after all. Thank youLee2fixit and FixIt.com.
Posted on Mar 05, 2009
Can you check the power transformer, voltage & resistance.
You may have to unsolder some components to test them...such as the rectifying diodes and the transformer. I believe that the outputs from the power supply board are all DC voltages. Is there all so a IC chip on the power supply board? Does your insurance cover lightening damage?
Posted on Mar 25, 2009
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