Re: Samsung PN50C6400
Is there a way to test the boards other than replacing?
If it is the panel then the boards should be good to sell, but if it is one of the boards then it would be too risky to sell boards.
Eaglecrest
Senior Member
Last Activity: 11-19-2021, 07:49 PM
Joined: 07-18-2018
Location: Hawthorne, NJ
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Re: Samsung PN50C6400
Timmy,
Thanks, I was suspecting this given what I had read on some other posts. Do you think the horizontal black lines are the plasma screen as well or the Y board(s)?Leave a comment:
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Samsung PN50C6400
I have a Samsung PN50C6400 which has at least two line issues (picture attached). There are horizontal black lines of different size (perhaps wider ones are just multiple lines appearing as one) banded across middle of screen (none on top or bottom 20%). These lines started some years back and have slowly increased in number/size. They can be annoying, but i guess i have gotten used to them and often don't even recognize them when watching, but would like to "fix" them if possible.
There are also some vertical, colored lines right of center and near right side. They have... -
Re: Samsung PN50C550G1F black horizontal lines
I have a Samsung PN50C6400 which has at least two line issues (picture attached). There are horizontal black lines of different size (perhaps wider ones are just multiple lines appearing as one) banded across middle of screen (none on top or bottom 20%). These lines started some years back and have slowly increased in number/size. They can be annoying, but i guess i have gotten used to them and often don't even recognize them when watching, but would like to "fix" them if possible.
There are also some vertical,...Leave a comment:
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Transformer hum
Please forgive the ignorance, but I thought this might be a good place to ask this.
I recently purchased a Chinese clone ultrasonic cleaner. When plugged in and powered on (i.e., power switch turned on) there is a high pitched hum. From what I uncovered so far it would seem to be a 120 Hz hum. It is relatively low volume, but clearly definable. Again, this is without the utlrasonic or heating functions turned on, just power to the unit. I am assuming this is related to the transformer.
Is this something that I should worry about? Does it indicate an issue in wait... -
Re: Nintendo Wii power supply
Might be, it was what came with the unit, but it is a hand me down. When i get a chance i will check the one that came with my original unit (new).Leave a comment:
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Re: Nintendo Wii power supply
Sorry for the delay, but here are pictures from a US supply for Heihachi_73.
I replaced the bulging smaller cap on left middle and the power supply works like a charm, can't same the same for the Wii....Last edited by Eaglecrest; 01-12-2021, 08:00 PM.Leave a comment:
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Re: Nintendo Wii power supply
Spitz, thank you. The question is what does re-flow mean. Just heating up the current solder to let it flow again, i.e., reflow? Or does it mean to remove the old and then flow new solder to reflow solder into the joint? You seem to indicate the former and stj the latter. Is there a standard definition for re-flow or is it up to individual interpretation?Leave a comment:
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Re: Nintendo Wii power supply
My suction pump has some issues, but between that and a squeeze bulb, plus wick. Rubber? These things have Teflon nose pieces to handle the heat, rubber would just melt. Or are you suggesting heat shrink tubing?Leave a comment:
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Re: Nintendo Wii power supply
stj, thank you. Seems reasonable, but if sludge is a potential problem then it seems you need to clean pads completely. Is that correct? I find it near impossible to remove all (or too many time more than most) of the past solder. No doubt my technique could use improvement. Suction will not remove the base solder and I find desoldering braid doesn't seem to work well for me. Comments or suggestions welcome.Leave a comment:
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Re: Nintendo Wii power supply
spitz, for a neophyte can you explain further. Regarding re-solder, are you suggesting reflowing the solder present or removing and resoldering?
As I mentioned, I did get the power supply working and can still address the two components you suggested. I may also consider replacing the other caps; however, they look fine. The cost of the components isn't much, but finding the right ones for a lower cost can be. Microcenter, where I got the replacement, has very limited stock and I consider myself very lucky to find it there. On line sources,...Leave a comment:
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Re: Nintendo Wii power supply
japlytic, I don't understand the question.
I was given the Wii and I described what happened when I tried to fire it up. I appreciate the advice, which seems good; however, not really looking to rebuild the entire unit. Replacing all the caps is probably a good idea, which I may follow. I am not looking to put a lot of money in to this, at least until I know what I am getting into.
My electronics knowledge is very basic thus my question. Reading the forums here and elsewhere, I took a look at the power supply for anything...Leave a comment:
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Re: Nintendo Wii power supply
Thanks Fenugrec,
No harm in trying the switch and part shouldn't be too expensive to try. Other caps look fine, but if it doesn't come to life I will try them as well.Leave a comment:
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Nintendo Wii power supply
I received a Wii that when plugged in the red light comes on the system, which I believe means the unit is seeing power. As I understand pushing the power button on the unit then powers it on and turns the light green.
When I push the power button nothing happens. I have another system and tried that power supply and the lights come on (green). I then tried the questionable supply on the other unit (which is know to work) and the same thing, red light but nothing more.
I opened the supply case and one of the capacitors seems to be bulging. The part says
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Re: Sharp LC-50LB481U Backlight problem
These TVs are a little big to work on indoors and it is raining today so i should be able to get to it tomorrow. This is probably a stupid question, but i just want to make sure I understand correctly. I am looking to connect pin 1 (On/Off) to pin 8 (5V) and pin 9 (Dim) to pin 16 (5V) each through a 1K resistor, which will act kind of like a fuse if i make a wrong connection.
Further this will be with the plug removed from CN9102; therefore, those two will be the only connections. Since 1 & 9 have 3.3V that should be sufficient...Leave a comment:
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Re: Sharp LC-50LB481U Backlight problem
I redid the CN9102 readings with a different meter, attached pdf shows the results. Pretty much the same except DIM goes from 3.3 to 2.5 V. As i understand it, PS On should change voltage when the power button is pressed, yet it doesn't. However, the TV seems to work fine except no visible picture.
I am also assuming that the "picture" I can see with a flashlight is what is seen on the screen when the backlight is lite. Is this correct?
To what does pin one "On/Off" refer? What does Pin 9...Leave a comment:
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Re: Sharp LC-50LB481U Backlight problem
Why would shorted LED cause a fire, why not put a fuse in the circuit?Leave a comment:
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Re: Visio M470VT
Thanks, appreciate the consult.Leave a comment:
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Re: Visio M470VT
RJ, I agree and wasn't looking to repair/replace the screen. My question is if this is a screen issue only or if boards are also bad. I don't want to be trying to sell boards that don't work. It seems the vertical lines from the crack are related to the crack, but are the horizontal lines at the top the result of the crack or a bad video board?Leave a comment:
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Visio M470VT
I have the above TV. The attached photo shows the screen. Top center shows a crack to the screen, but I am not sure if all the lines are related to the crack or the result of a bad video board. Any thoughts?...
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