Hello all
One more reboot issue on Samsung again, that becomes usuals with this brand...
Model: Samsung UE32D5720
Chassis: U66A
Mainboard number: bn41-01660
Power supply number: BN44-00422_23A
There is a good picture of the mainboard found on internet
Once again I could find the schematic of the power supply but not from the main board, I don't know where are you getting for it, none of my favourite sources could provide it. The service manual is available but no schematics inside...
The problem of this TV set is that when you plug it , it looks booting normally, the logo Samsung is showing and source is displaying, suddenly it reboots and never stops to restart. The back light does not bright so much, and looks like reducing before to stop.
The test I made on the power supply, all power looks good, +5vA is always on and stable even restarting, +5vB and +13V are coming on when the TV starts, they are stable as well.
Then I checked the main board as I could without schematics, on the coils I could find de 3.3v, 1.5v and 1.1v looks good too, but I would like to know more about the reset circuit to see if no problem in that section.
Please any one has an idea or a schematic ?
EDIT: I was checking deeper the power supply and I could not find the 255V on C9110, I have got only 145V there when back light is on, as well I could not understand why this voltage should be there in regard of the 114V before D9102, surely constituted by the combination of L9101 and Q9101 as I read a comment about oscillations under the coil in the schema.
Thank you by advance.
One more reboot issue on Samsung again, that becomes usuals with this brand...
Model: Samsung UE32D5720
Chassis: U66A
Mainboard number: bn41-01660
Power supply number: BN44-00422_23A
There is a good picture of the mainboard found on internet
Once again I could find the schematic of the power supply but not from the main board, I don't know where are you getting for it, none of my favourite sources could provide it. The service manual is available but no schematics inside...
The problem of this TV set is that when you plug it , it looks booting normally, the logo Samsung is showing and source is displaying, suddenly it reboots and never stops to restart. The back light does not bright so much, and looks like reducing before to stop.
The test I made on the power supply, all power looks good, +5vA is always on and stable even restarting, +5vB and +13V are coming on when the TV starts, they are stable as well.
Then I checked the main board as I could without schematics, on the coils I could find de 3.3v, 1.5v and 1.1v looks good too, but I would like to know more about the reset circuit to see if no problem in that section.
Please any one has an idea or a schematic ?
EDIT: I was checking deeper the power supply and I could not find the 255V on C9110, I have got only 145V there when back light is on, as well I could not understand why this voltage should be there in regard of the 114V before D9102, surely constituted by the combination of L9101 and Q9101 as I read a comment about oscillations under the coil in the schema.
Thank you by advance.
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