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Old 06-12-2010, 01:46 AM   #1
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Samsung Flat Panel Repair #2


I got another Samsung tv for repair. This is happening quite regular lately. This time I took pics. Again it was the caps that caused it to not come out of standby. The caps sit right next to a heat sink that is very hot. The are getting baked and popping their tops. I'm glad because I'm making some extra $$. Here are a couple pics. The replacement caps were a little larger in diameter so they don't sit flush but work just fine. dorf dude...
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Samsung Flat Panel Repair #2-674.jpg   Samsung Flat Panel Repair #2-675.jpg  
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Old 06-12-2010, 02:38 AM   #2
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Samsung Flat Panel Repair #2


of there is a problem with the heat, why not move them?
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Old 06-12-2010, 02:46 AM   #3
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Next time I will put a little piece of radiant heat shield on them. Even foil would probably be ok. dorf dude...
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Old 07-07-2010, 10:28 PM   #4
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Samsung Flat Panel Repair #2


Shu

The problem with the failure is not the heat. This is what I do for a living. Been a repair tech for over 33 years. When they (the manufacturers) build these sets, they are putting in capacitors that are not rated a high enough voltage. THIS is causing these to fail. They could make these sets last longer, but they don't want them to. More and more of a disposible society.

I guess you could use the extra money for your house building job. It always comes in handy!
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Old 07-07-2010, 11:23 PM   #5
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Samsung Flat Panel Repair #2


I put higher rated caps in, thats why they are a little bigger. dorf dude...
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Old 07-08-2010, 07:26 AM   #6
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Samsung Flat Panel Repair #2


Good job! That what I always do. You see, you took care of the cause without knowing it. Also, I might add, be sure and install high-temp 105 degree caps as well.
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Old 09-29-2010, 05:19 PM   #7
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Samsung Flat Panel Repair #2


hello i was wondering u seem to know about tv repair maybe you could tell me why my sound stop working on a 52'' RCA bigscreen pic is perfect but no sound, but a low popping noise. thanks
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Old 09-29-2010, 05:54 PM   #8
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Samsung Flat Panel Repair #2


The first thing you need to do is to turn the TV off, and unplug the AC power cord. Let it sit unplugged for maybe 15 minutes, then plug it back in and try it. Are you on cable, and using a cable box? If so, the cable box can cause this. If you have a VCR or a DVD player, try using one of these and see if you have any sound. There is no way that I can talk you through a repair on a problem like this, but just trying to make sure that your TV is the problem, and not something else.

Try unplugging it first, and see what happens.
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Old 09-29-2010, 11:16 PM   #9
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Samsung Flat Panel Repair #2


Check the power supply caps. If it is letting un-filtered voltage through then that could cause your problem. Look for bulging or cracked tops. dorf dude...
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Old 09-29-2010, 11:34 PM   #10
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Samsung Flat Panel Repair #2


Hmmmm...I've been thinking of getting a plasma tv soon, and was looking into the Samsung vs. the Panasonic. I've heard of repair issues like this with the Samsung. What have any of you seen/heard with regards to the Panasonic plasmas?
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Old 09-30-2010, 06:09 AM   #11
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Samsung Flat Panel Repair #2


Quote:
Originally Posted by shumakerscott View Post
I put higher rated caps in, thats why they are a little bigger. dorf dude...
I just wanna know, when you say you put in higher rated caps, do you mean you used caps with higher voltage rating, higher capacitance or both. This is the same problem I encountered with my Samsung LCD monitor.
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Old 09-30-2010, 06:45 AM   #12
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Samsung Flat Panel Repair #2


The capacitor problem has little do to with voltage or heat. It is a result of a stolen electrolyte formula that was not complete.

http://en.wikipedia.org/wiki/Capacitor_plague

The replacement caps must be Low ESR capacitors. Off the shelf Radio Shack capacitors will fail due to their ERS rating.
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Old 09-30-2010, 03:44 PM   #13
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Samsung Flat Panel Repair #2


Quote:
Originally Posted by Kellie Dobbie View Post
I just wanna know, when you say you put in higher rated caps, do you mean you used caps with higher voltage rating, higher capacitance or both. This is the same problem I encountered with my Samsung LCD monitor.
Higher Voltage. You should get as close to the same capacitance as possibe. dorf dude...
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Old 09-30-2010, 03:48 PM   #14
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Samsung Flat Panel Repair #2


Quote:
Originally Posted by ttech View Post
The capacitor problem has little do to with voltage or heat. It is a result of a stolen electrolyte formula that was not complete.

http://en.wikipedia.org/wiki/Capacitor_plague

The replacement caps must be Low ESR capacitors. Off the shelf Radio Shack capacitors will fail due to their ERS rating.
Great link , thanks for sharing. I hope I can make a little extra $$ fixing these problems. dorf dude...
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Old 09-30-2010, 03:49 PM   #15
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Samsung Flat Panel Repair #2


Quote:
Originally Posted by spaceman spif View Post
Hmmmm...I've been thinking of getting a plasma tv soon, and was looking into the Samsung vs. the Panasonic. I've heard of repair issues like this with the Samsung. What have any of you seen/heard with regards to the Panasonic plasmas?
My Samsung which is over 2 years old is working fine. dorf dude...
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