Hello guys, I bought this unit as a project TV to keep me busy on the weekends (on top of my car haha). The previous owner sold it to me saying it had a pink screen but I could never see that as an evidence and have never got this TV to work past what is shown in the video below.
With the power and OCB connected, the TV does as shown in the following video. Pardon the long video, but please note the brightness of the backlight that keeps going up and down and sometimes the panel switches OFF completely with each restart.
Link to video-https://photos.app.goo.gl/D9Ae4JS6o4kaGxnq6
Suspecting the One Connect Box to be an issue, I tried switching on the TV without it and the following video shows me doing that. Note that at around 25s the backlight suddenly goes full blast for some reason. In this case, the TV does not go into endless reboot and I can have it on displaying this animation for however long I wish to.
Link to video-https://photos.app.goo.gl/A4OzeZ8eJoR2pG1d2
In the video below, I try to plug in the OCB when the "Connect OCB" animation is playing and the TV starts its endless rebooting again.
Link to video-https://photos.app.goo.gl/C883Qe3CknLJTm8S9
Thereafter, I studied a little more about the issue and tried starting the TV with the main board disconnected as shown in the picture below and then took a video of it. In the video, you'll see that as soon as I plug the TV to power, there a slight flicker at the bottom of the screen and the TV does nothing and stays blank for 20s or so and then it all lights up white with yellow and green smudges at the top and bottom.
Link to video-https://photos.app.goo.gl/VtXp12AV1Wr2Nxi36
What I tried next was really interesting, I got the TV to show something other than the SmartTV logo for once. On the OCB's PCB, there is a little grey button which I believed to be the reset or ON/OFF, I held that in and tried turning on the TV. It showed me the 4 different smart TV logos for a while and then went back to clicking and endlessly rebooting. However, I could never again replicate this with OCB's grey button again.
However, a couple of days later, yesterday, I shorted the IC3701 on mainboard on pins 5 and 6 as it said on this forum and I can get the TV to show those four logos as showed in the video EVERY time I short this IC, unlike with the OCB.
Picture of the grey button on OCB's PCB (ref SW2201).
Picture of the IC3701 on the mainboard that I shorted every time to get the 4 separate logos to display.
The video of what happens when I short the IC3701 on the mainboard.
Link to video-https://photos.app.goo.gl/pjzOHhIEGv85sY0x2
I'm sorry for the poor quality videos, however, they all lost quality when I uploaded them on Google. Feel free to ask for more if you need. And I'm sorry for the background noise in one of the videos of a crowd celebrating, I was on skype with my girlfriend who is in India.
I suspect the power supply to be problematic, maybe it is not able to provide the appropriate voltage to the mainboard when it requests it with OCB plugged in, or maybe the OCB is at fault. Either way, I'd like to fix it as cheaply as possible so any suggestions are welcome.
On looking at the power supply, I found a few components that looked suspicious to me. Oddly enough, all the capacitors "look" healthy. Below are some pictures of what seems wrong to me.
One of the terminals of ONE bridge rectifier seems corroded or has some liquidy substance as shown.
One of the disc capacitors has a round liquidy sweat on the board right below it. Look carefully in the picture below.
One of the transformers (?) has a sweat on it, could be the insulator that leaked out? Just guessing. All the others have spotless white labels on them.
Let me know how to go about fixing this. Thank you.
With the power and OCB connected, the TV does as shown in the following video. Pardon the long video, but please note the brightness of the backlight that keeps going up and down and sometimes the panel switches OFF completely with each restart.
Link to video-https://photos.app.goo.gl/D9Ae4JS6o4kaGxnq6
Suspecting the One Connect Box to be an issue, I tried switching on the TV without it and the following video shows me doing that. Note that at around 25s the backlight suddenly goes full blast for some reason. In this case, the TV does not go into endless reboot and I can have it on displaying this animation for however long I wish to.
Link to video-https://photos.app.goo.gl/A4OzeZ8eJoR2pG1d2
In the video below, I try to plug in the OCB when the "Connect OCB" animation is playing and the TV starts its endless rebooting again.
Link to video-https://photos.app.goo.gl/C883Qe3CknLJTm8S9
Thereafter, I studied a little more about the issue and tried starting the TV with the main board disconnected as shown in the picture below and then took a video of it. In the video, you'll see that as soon as I plug the TV to power, there a slight flicker at the bottom of the screen and the TV does nothing and stays blank for 20s or so and then it all lights up white with yellow and green smudges at the top and bottom.
Link to video-https://photos.app.goo.gl/VtXp12AV1Wr2Nxi36
What I tried next was really interesting, I got the TV to show something other than the SmartTV logo for once. On the OCB's PCB, there is a little grey button which I believed to be the reset or ON/OFF, I held that in and tried turning on the TV. It showed me the 4 different smart TV logos for a while and then went back to clicking and endlessly rebooting. However, I could never again replicate this with OCB's grey button again.
However, a couple of days later, yesterday, I shorted the IC3701 on mainboard on pins 5 and 6 as it said on this forum and I can get the TV to show those four logos as showed in the video EVERY time I short this IC, unlike with the OCB.
Picture of the grey button on OCB's PCB (ref SW2201).
Picture of the IC3701 on the mainboard that I shorted every time to get the 4 separate logos to display.
The video of what happens when I short the IC3701 on the mainboard.
Link to video-https://photos.app.goo.gl/pjzOHhIEGv85sY0x2
I'm sorry for the poor quality videos, however, they all lost quality when I uploaded them on Google. Feel free to ask for more if you need. And I'm sorry for the background noise in one of the videos of a crowd celebrating, I was on skype with my girlfriend who is in India.
I suspect the power supply to be problematic, maybe it is not able to provide the appropriate voltage to the mainboard when it requests it with OCB plugged in, or maybe the OCB is at fault. Either way, I'd like to fix it as cheaply as possible so any suggestions are welcome.
On looking at the power supply, I found a few components that looked suspicious to me. Oddly enough, all the capacitors "look" healthy. Below are some pictures of what seems wrong to me.
One of the terminals of ONE bridge rectifier seems corroded or has some liquidy substance as shown.
One of the disc capacitors has a round liquidy sweat on the board right below it. Look carefully in the picture below.
One of the transformers (?) has a sweat on it, could be the insulator that leaked out? Just guessing. All the others have spotless white labels on them.
Let me know how to go about fixing this. Thank you.
Attached Files
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