Re: Samsung HP-T5054X/XAA

I really hate when it OPs fail to come back to report results, either bad or good. So, here I am one last time to report that I now have a working TV. I figured that since the power supply went into protect with the main logic board connected I went ahead and order a new one and replaced it. After hooking everything back up, the TV powered up normally with a nice picture. I was initially concerned as I thought I would have to adjust the voltages but everything measured good. I'll double check the firmware version and update it if necessary.

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Re: Samsung HP-T5054X/XAA

Graham,

This confuses me more than a little bit. If the power supply is triggered on by causing pin 4 of CN807 to go low how would only having CN801 connected ever turn on the power supply?? However, never being the one to ignore advice and guidance when asked, I did as you said; nothing connected to the power supply except the power in and CN801. And as I suspected, nothing at all happened. No relay click and no voltages at all.

I am at a loss here and really want to understand. So, if you have any other help to offer, I'm all...

Re: Samsung HP-T5054X/XAA

Hi nogger and thanks for the reply!

While searching for solutions today I found a blog [URL="http://blog.coppelltvrepair.com/2014_02_01_archive.html"]http://blog.coppelltvrepair.com/2014_02_01_archive.html[/URL] that detailed how to troubleshoot the power supply. It had me jumpering some pins on a connector to turn on the power supply as well as triggering the higher voltage. When I did this all voltages checked out and the power supply relays only clicked once then it was silence. So, I now know that the power supply is good....

Hello,

I was given this TV. No picture, no sound. Power supply relay clicks when plugging in power. Front blue LED will flash 5 times. Then relay clicks again. This cycle continues repeating until power is removed. I removed the back and visually inspected all boards. The power supply board (SMPS) had three leaking/bulging caps. Rather than try a repair I ordered and received a replacement from ShopJimmy. Replacing the SMPS did not fix the problem, still had the same symptoms.

The service manual troubleshooting steps had me disconnecting the cable from the X-MAIN,...

Re: New Members - please post your introductions here

Hello All. My name is Chuck and I've just joined today. I've a background in computer hardware and networking. I also have a background in electronics having learned when I was in the Air Force (22.5 years and now retired).

I'm married, no kids at home (yippee) and I am 62 yrs old.