Hello all got another TV here im puzzled by. why cant they all be easy fixes that just need a little love and some tape???
anyway i go to this guys house to look at an ONN 100012588
this is my first time looking at one of these brand of TV's.
TBH i have low expectations because i see ONN as the cheap walmart brand that suddenly popped up selling the cheapest version of all kinds of tech things. and someone sent me a ONN flash drive with some data on it with some recordings they wanted me to check out and it immediately broke and corrupted the data and i was unable to do anything to salvage either the data or the drive as a usable device. so already i think this brand may be cutting corners!
anyway back to the story:
i show up and sure enough the TV shows no signs of life.
i really need to start taking better notes because i cant say for sure if it had a blinking red LED or not but at any rate the TV would not turn on.
so i take the back off and test the backlights. there are 2 separate 2 wire connectors that go to the LED strips and i am able to get both of them to light up so i declare "its not the backlights!"
moving on, i plug in the Power supply without the MB attatched to see if maybe it has one of those nice "self power on and backlight test" features that make things easy. nope it doesnt have that. nothing happens.
so i test voltages and notice that the 12v is not a steady 12v, its swinging between 10.5 and 12v or so.
i also see that there is a marking on the board for 5VSB but it has no voltage on it.
So i say "Looks like a bad PSU!"
i have never seen voltage fluctuating like this on a GOOD PSU!
so the new PSU comes in, and i plug it in (but not to MB), and i notice that it ALSO has this fluctuating 12v and no 5VSB ... so now im thinking...wait. is this NORMAL?
or did the guy send me another PSU with the same issue?
cross my fingers and plug in the MB,
Notice that the 12v becomes stable
The TV turns on, stays on. has good picture. everythings fine! turn on and off a few times...let run for a few minutes...
call it good...dont question it!
but in the back of my mind i feel like i will be back and sure enough just one week later he calls to say the TV is dead again
so i come back and sure enough the tv wont turn on. this is when i notice for sure that the red LED is just blinking faintly over and over...
i notice that the PSU voltage is fluctuating again even with the main plugged in. but also that it dips real low when the main is plugged in. down as low as 5v. and this fluctuating seems to coincide with the red LED blinking. basically the MB is trying to boot up, so initially the LED comes on but then it quickly fails and so the voltage drops and the LED turns off, and then it tries again over and over.
it sure seems like it would be because of the fluctuating voltage on the PSU causing this, but we already changed the PSU and it didnt fix the problem so we go ahead and order the Main Board.
sadly, the mainboard comes in and doesnt change the situation at all.
so now im left a bit confused.
did the guy send me a PSU with one week of life left in it?
is the TV breaking from some other reason due to the clients house or use situation?
do i have two good power supplies but was actually sent a bad mainboard?
is that voltage fluctuation on the PSU normal?
am i kind of losing my mind on this one? yes! and my ass too!
between my time and his money a lot has been invested so i cant just give up! someone out there please flip my coat in the right direction. has anyone worked on these ONN sets and can report about the fluctuating voltage?
oh another wrinkle in the plot. come to find out the PSU that i ordered... the seller doesnt accept returns! how did i not see that before ordering?
i sent the ebay seller a message asking if they were serious about the no returns, and also told them about the fluctuating voltage.
They do have a few of these tvs apparently, i see them still selling parts for it. Maybe they will actually go check and report back to me but somehow i doubt it!
if i cant get some answers somehow, i may end up buying another PSU! I will be crossing every bone in my body at that point. help me out of this jam, my friends! if you can!
anyway i go to this guys house to look at an ONN 100012588
this is my first time looking at one of these brand of TV's.
TBH i have low expectations because i see ONN as the cheap walmart brand that suddenly popped up selling the cheapest version of all kinds of tech things. and someone sent me a ONN flash drive with some data on it with some recordings they wanted me to check out and it immediately broke and corrupted the data and i was unable to do anything to salvage either the data or the drive as a usable device. so already i think this brand may be cutting corners!
anyway back to the story:
i show up and sure enough the TV shows no signs of life.
i really need to start taking better notes because i cant say for sure if it had a blinking red LED or not but at any rate the TV would not turn on.
so i take the back off and test the backlights. there are 2 separate 2 wire connectors that go to the LED strips and i am able to get both of them to light up so i declare "its not the backlights!"
moving on, i plug in the Power supply without the MB attatched to see if maybe it has one of those nice "self power on and backlight test" features that make things easy. nope it doesnt have that. nothing happens.
so i test voltages and notice that the 12v is not a steady 12v, its swinging between 10.5 and 12v or so.
i also see that there is a marking on the board for 5VSB but it has no voltage on it.
So i say "Looks like a bad PSU!"
i have never seen voltage fluctuating like this on a GOOD PSU!
so the new PSU comes in, and i plug it in (but not to MB), and i notice that it ALSO has this fluctuating 12v and no 5VSB ... so now im thinking...wait. is this NORMAL?
or did the guy send me another PSU with the same issue?
cross my fingers and plug in the MB,
Notice that the 12v becomes stable
The TV turns on, stays on. has good picture. everythings fine! turn on and off a few times...let run for a few minutes...
call it good...dont question it!
but in the back of my mind i feel like i will be back and sure enough just one week later he calls to say the TV is dead again
so i come back and sure enough the tv wont turn on. this is when i notice for sure that the red LED is just blinking faintly over and over...
i notice that the PSU voltage is fluctuating again even with the main plugged in. but also that it dips real low when the main is plugged in. down as low as 5v. and this fluctuating seems to coincide with the red LED blinking. basically the MB is trying to boot up, so initially the LED comes on but then it quickly fails and so the voltage drops and the LED turns off, and then it tries again over and over.
it sure seems like it would be because of the fluctuating voltage on the PSU causing this, but we already changed the PSU and it didnt fix the problem so we go ahead and order the Main Board.
sadly, the mainboard comes in and doesnt change the situation at all.
so now im left a bit confused.
did the guy send me a PSU with one week of life left in it?
is the TV breaking from some other reason due to the clients house or use situation?
do i have two good power supplies but was actually sent a bad mainboard?
is that voltage fluctuation on the PSU normal?
am i kind of losing my mind on this one? yes! and my ass too!
between my time and his money a lot has been invested so i cant just give up! someone out there please flip my coat in the right direction. has anyone worked on these ONN sets and can report about the fluctuating voltage?
oh another wrinkle in the plot. come to find out the PSU that i ordered... the seller doesnt accept returns! how did i not see that before ordering?
i sent the ebay seller a message asking if they were serious about the no returns, and also told them about the fluctuating voltage.
They do have a few of these tvs apparently, i see them still selling parts for it. Maybe they will actually go check and report back to me but somehow i doubt it!
if i cant get some answers somehow, i may end up buying another PSU! I will be crossing every bone in my body at that point. help me out of this jam, my friends! if you can!
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