Hello all,
This is my first post, but long term lurker on the form learning as much as possible about these TV's. I was given this TV as due to a power outage of constant On/off of power to TV. The TV originally would just click on and off (Typical Reboot Cycle). I opened the back of the TV, and troubleshooted by taking the 96 pin LVDS off one at a time to see if I had a picture on either side. I finally fixed the reboot cycle by finding the error on the left side of the screen off connector CN 1301, and the TV would stay on. Further troubleshooting led me to the driver boards where the small ribbon jumper cables that hook each driver board in series, on the left side of the screen. After searching on the forum, I masked the driver board jumper from 4 to 17 as some had suggested on other tv's. I was hoping for a little guidance as to where to troubleshoot from here. This is my first TV to learn on, and would enjoy the education if I can fix it. Any guidance is appreciated.
The SMPS does not have any blown caps, Power is being delivered to the main board. I can hear sounds when it boots up, and can here sounds as i move through the menu's (no picture of course)
The TCONN is part of the Main board, where would one need to look to notice if its a TCONN issue on the Main board? What typically fails as I'm probing?
My finger in the picture is pointing to a smd capacitor which I "thought" is bad as with the power off, and i check for continuity, the Fluke meter beeps on a few in this area. The resistance value varied from 8 ohms to 12 ohms, however testing other capacitors in different area didn't yield same result.
After searching through the forums, i understand how poorly these samsung's are put together and the likely hood I have a bad panel, However if I can troubleshoot it, or see some life as in a picture, the education in my opinion is well worth it.
I have taken Voltage points on both LVDS cables and can post my information but found that while if have 3.33v on FB_TRDY1 on pin 1, I do not have VGHD_30V_PW as its 0V. I do have test points on main board labeled FB_TRDY1 and FB_TRDY 3, if I solder a jumper on those points would that be best to rule out MB/ TCONN is working?
This is my first post, but long term lurker on the form learning as much as possible about these TV's. I was given this TV as due to a power outage of constant On/off of power to TV. The TV originally would just click on and off (Typical Reboot Cycle). I opened the back of the TV, and troubleshooted by taking the 96 pin LVDS off one at a time to see if I had a picture on either side. I finally fixed the reboot cycle by finding the error on the left side of the screen off connector CN 1301, and the TV would stay on. Further troubleshooting led me to the driver boards where the small ribbon jumper cables that hook each driver board in series, on the left side of the screen. After searching on the forum, I masked the driver board jumper from 4 to 17 as some had suggested on other tv's. I was hoping for a little guidance as to where to troubleshoot from here. This is my first TV to learn on, and would enjoy the education if I can fix it. Any guidance is appreciated.
The SMPS does not have any blown caps, Power is being delivered to the main board. I can hear sounds when it boots up, and can here sounds as i move through the menu's (no picture of course)
The TCONN is part of the Main board, where would one need to look to notice if its a TCONN issue on the Main board? What typically fails as I'm probing?
My finger in the picture is pointing to a smd capacitor which I "thought" is bad as with the power off, and i check for continuity, the Fluke meter beeps on a few in this area. The resistance value varied from 8 ohms to 12 ohms, however testing other capacitors in different area didn't yield same result.
After searching through the forums, i understand how poorly these samsung's are put together and the likely hood I have a bad panel, However if I can troubleshoot it, or see some life as in a picture, the education in my opinion is well worth it.
I have taken Voltage points on both LVDS cables and can post my information but found that while if have 3.33v on FB_TRDY1 on pin 1, I do not have VGHD_30V_PW as its 0V. I do have test points on main board labeled FB_TRDY1 and FB_TRDY 3, if I solder a jumper on those points would that be best to rule out MB/ TCONN is working?
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