Heya! I've acquired a Proscan 42LED55SA tv that originally would turn off after about 2 minutes or less. Changing out the caps on the PCB solved that problem, but I was left with sound and a screen full of vertical red/green/grey-black lines (I've attached a picture attempting to show this, but still difficult to pic up with my camera!). I checked all the regulators on the t-con and the main board, and they all check out fine.
Since I saw lines on the screen, I decided to get another t-con supposedly out of a working set with a damaged screen, and I get 1/2 screen with a negative like image, and 1/2 screen full of grey and white banding. I've checked the ribbon connectors for proper seating with the picture staying the same each time.
The only "odd" thing I can find on any board is that one set of output voltages from my PCB to the Main is a 16VDC output putting out 17.2VDC (the 3.3, 5, and 24V outputs are all o.k.). Would this cause a problem, and how would I find the culprit on the board? If this wouldn't affect anything, could anyone offer a suggestion as to whether the problem is the t-con or panel (or something I've not thought of yet!!)? Thanks!!
Since I saw lines on the screen, I decided to get another t-con supposedly out of a working set with a damaged screen, and I get 1/2 screen with a negative like image, and 1/2 screen full of grey and white banding. I've checked the ribbon connectors for proper seating with the picture staying the same each time.
The only "odd" thing I can find on any board is that one set of output voltages from my PCB to the Main is a 16VDC output putting out 17.2VDC (the 3.3, 5, and 24V outputs are all o.k.). Would this cause a problem, and how would I find the culprit on the board? If this wouldn't affect anything, could anyone offer a suggestion as to whether the problem is the t-con or panel (or something I've not thought of yet!!)? Thanks!!
Comment