Hello,
Looking for a good idea here. Picked up a broken Panasonic TH-50PX75U awhile back, and was happy to see that just the lower "buffer" "SD" board appeared to be the problem. In fact, it was already removed from a previous TV tech that allegedly had taken the set apart and quoted for the customer that decided not to repair.
So, I follow the repair manual, and after double and triple taking the fact the board was missing, and the screen was only showing on the top half, I went ahead and picked up a used SD board on Ebay.
TV worked great, for about 8 hours. Then, failed with 7 power blinks, which according to the manual is a "Driver SOS2" error. Culprit could be SD,SC, or SU board, or all three (i guess). Following a troubleshooting technique I thought I read before, I simply removed the SD board I had just installed, and had the same half screen, but the TV started up. Naturally , I assumed this SD board wasn't good.
Got a refund on that board, and bought another from a completely different seller. Rinse and repeat. In less than an hour of runtime, I am not back to 7 blinks
So depressing. I'm sure if I take the SD out, I'll have the same half screen, but I'm also sure now that something else is wrong. I'm just surprised that whatever that something is, it can actually fry the SD board?
Really not sure what to do at this point, because I've read some horror stories about repairing this set. Read about people replacing all boards related to an error, and still having trouble. Is there any way to trace this down with any more detail than what I've been doing? Seems like the main thing I need to be doing now is determining if this had a bad panel. When the TV works, the picture is great, however I've now read that a panel can be defective in such a way that it will blow these buffer boards. Is this true? Thanks!
Looking for a good idea here. Picked up a broken Panasonic TH-50PX75U awhile back, and was happy to see that just the lower "buffer" "SD" board appeared to be the problem. In fact, it was already removed from a previous TV tech that allegedly had taken the set apart and quoted for the customer that decided not to repair.
So, I follow the repair manual, and after double and triple taking the fact the board was missing, and the screen was only showing on the top half, I went ahead and picked up a used SD board on Ebay.
TV worked great, for about 8 hours. Then, failed with 7 power blinks, which according to the manual is a "Driver SOS2" error. Culprit could be SD,SC, or SU board, or all three (i guess). Following a troubleshooting technique I thought I read before, I simply removed the SD board I had just installed, and had the same half screen, but the TV started up. Naturally , I assumed this SD board wasn't good.
Got a refund on that board, and bought another from a completely different seller. Rinse and repeat. In less than an hour of runtime, I am not back to 7 blinks
So depressing. I'm sure if I take the SD out, I'll have the same half screen, but I'm also sure now that something else is wrong. I'm just surprised that whatever that something is, it can actually fry the SD board?Really not sure what to do at this point, because I've read some horror stories about repairing this set. Read about people replacing all boards related to an error, and still having trouble. Is there any way to trace this down with any more detail than what I've been doing? Seems like the main thing I need to be doing now is determining if this had a bad panel. When the TV works, the picture is great, however I've now read that a panel can be defective in such a way that it will blow these buffer boards. Is this true? Thanks!
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