My TV uses the board BN96-03057A, model PSLF201501B.
The original issue was the standby light would go on then immediately turn off - TV would not turn on. Pulled the board to found 3 caps bulging so I replaced them.
After replacing the caps and confirming the fuse was good, I plugged the board into the wall. At that point the board was not generating power. Checked the fuse and it was blown.
I replaced the fuse a second time, plugged it in, and poof - cap NT811S made quite a pop! In hindsight, I had read somewhere that you can use a 40 watt bulb in place of the fuse. If it lights you have a short.
Here is my thought process for trouble shooting:
1. Pull the bridge rectifier to isolate the AC from DC
2. Test the bridge rectifier
3. Replace the popped cap. Not sure I can read a number off it
4. Apply AC power and check for 120v potential where the rectifier was
5. Check for a short on the DC side by injecting low power into the rail
6. If no sort found, install the rectifier and the light and give it a go.
Is my thought process close? I do not have the schematic, but I can kind of make out the paths.
Thank you.
The original issue was the standby light would go on then immediately turn off - TV would not turn on. Pulled the board to found 3 caps bulging so I replaced them.
After replacing the caps and confirming the fuse was good, I plugged the board into the wall. At that point the board was not generating power. Checked the fuse and it was blown.
I replaced the fuse a second time, plugged it in, and poof - cap NT811S made quite a pop! In hindsight, I had read somewhere that you can use a 40 watt bulb in place of the fuse. If it lights you have a short.
Here is my thought process for trouble shooting:
1. Pull the bridge rectifier to isolate the AC from DC
2. Test the bridge rectifier
3. Replace the popped cap. Not sure I can read a number off it
4. Apply AC power and check for 120v potential where the rectifier was
5. Check for a short on the DC side by injecting low power into the rail
6. If no sort found, install the rectifier and the light and give it a go.
Is my thought process close? I do not have the schematic, but I can kind of make out the paths.
Thank you.
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