Thanks in advance for taking the time to read and possibly help me with this issue. I tried searching for this issue but none specifically matched. Also, I would like to apologize in advance if some of my terminology is incorrect.
I have a 40" Samsung Series 5 LCD TV. It was purchased approx. 2 years ago.
The issue first began with when the TV was powered up it the standby light would flash 5 times and nothing would turn on. No sound, No backlight, and the standby light would remain off.
I would unplug the TV wait 10-20 minutes, plug back in and power up the TV. It would then turn on. The issue got progressively worse. I automatically related this to a cap issue as when unplugging it the caps would discharge.
Now at my job I have 2 technicians on hand which have helped me out. They have all the possible tools need.
The main power board was tested and all was believed to be fine. Capacitors were all individually tested all tolerances are proper. They also tested the rated of discharge which was fine. I did however replace the all of capacitors because had them in stock here.
We have gone over all three boards looking for cold solder points, we have tested and verified all voltages on the pinouts of all the boards. The issue is that we cannot pin point the issue. I could try turning it on right now and it will work, then turn it off again. I can go back in 5 minutes and turn it back on and it will just blink the red standby light 5 times and not power up.
When it does turn on it will function properly, It does not shut off randomly as some posts would claim with bad capacitors.
I also do not hear any relays click when it works, which leads me to believe the routing of power is not relay controlled but rather IC controlled.
I have the ability to test and confirm anything you guys wish me to test. Please if anybody can help or point me in the right direction it would greatly help.
Thanks,
Claudio
I have a 40" Samsung Series 5 LCD TV. It was purchased approx. 2 years ago.
The issue first began with when the TV was powered up it the standby light would flash 5 times and nothing would turn on. No sound, No backlight, and the standby light would remain off.
I would unplug the TV wait 10-20 minutes, plug back in and power up the TV. It would then turn on. The issue got progressively worse. I automatically related this to a cap issue as when unplugging it the caps would discharge.
Now at my job I have 2 technicians on hand which have helped me out. They have all the possible tools need.
The main power board was tested and all was believed to be fine. Capacitors were all individually tested all tolerances are proper. They also tested the rated of discharge which was fine. I did however replace the all of capacitors because had them in stock here.
We have gone over all three boards looking for cold solder points, we have tested and verified all voltages on the pinouts of all the boards. The issue is that we cannot pin point the issue. I could try turning it on right now and it will work, then turn it off again. I can go back in 5 minutes and turn it back on and it will just blink the red standby light 5 times and not power up.
When it does turn on it will function properly, It does not shut off randomly as some posts would claim with bad capacitors.
I also do not hear any relays click when it works, which leads me to believe the routing of power is not relay controlled but rather IC controlled.
I have the ability to test and confirm anything you guys wish me to test. Please if anybody can help or point me in the right direction it would greatly help.
Thanks,
Claudio
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