http://www.shopjimmy.com/samsung-bn4...upply-unit.htm
I've got one of these power supplies here from an eBay customer and am trying to track down the issue. I repaired the main board for the TV and was notified that the TV was still not working properly. The TV originally was having the typical rebooting issue related to the failure of C102 on the main board. I repair these often and offer a service on eBay for them.
For testing, I have only a LN40A630 to check the main boards for the LCDs and an PN58A550 for the plasma boards. These boards have auto LVDS so you can check them all in one model.
Now, on to the customer's issue with the power supply. I offered to look at it out of kindness after the main board repair failed to get the TV going. I'm unable to live test it since my plasma on hand is a 58". I've dealt with plenty of these supplies before and typically, they either have a couple failed caps and sometimes that's followed by blown diodes, fuses and/or other components. This particular board seems to have none of the above and all the solder joints look fine. It has standby voltage, but when I ground the PS-ON pin I get no relay click at all.
Has anyone experienced this symptom on the BN44-00222A? I'm at work right now and won't be able to troubleshoot further until this evening but wanted to get the ball rolling. I've read all threads I can find here as well as several other sites but I cannot find anyone else that had 5V but no relay click. Once again, I can only bench test this board and have no TV on hand for it.
Any help is greatly appreciated as always.
Thanks,
Aaron
I've got one of these power supplies here from an eBay customer and am trying to track down the issue. I repaired the main board for the TV and was notified that the TV was still not working properly. The TV originally was having the typical rebooting issue related to the failure of C102 on the main board. I repair these often and offer a service on eBay for them.
For testing, I have only a LN40A630 to check the main boards for the LCDs and an PN58A550 for the plasma boards. These boards have auto LVDS so you can check them all in one model.
Now, on to the customer's issue with the power supply. I offered to look at it out of kindness after the main board repair failed to get the TV going. I'm unable to live test it since my plasma on hand is a 58". I've dealt with plenty of these supplies before and typically, they either have a couple failed caps and sometimes that's followed by blown diodes, fuses and/or other components. This particular board seems to have none of the above and all the solder joints look fine. It has standby voltage, but when I ground the PS-ON pin I get no relay click at all.
Has anyone experienced this symptom on the BN44-00222A? I'm at work right now and won't be able to troubleshoot further until this evening but wanted to get the ball rolling. I've read all threads I can find here as well as several other sites but I cannot find anyone else that had 5V but no relay click. Once again, I can only bench test this board and have no TV on hand for it.
Any help is greatly appreciated as always.
Thanks,
Aaron
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