OK so I've got a TV handed to me by a customer that I figured would be a cinch to fix based on previous experience with the symptoms. Turning into a real conundrum now tho.
Anyhoo here's the skinny:
Symptoms:
Screen powers on, momentarily shows the Sceptre logo, then fades out to black in about 500ms. Audio continues to function normally, and the TV is detected properly on a Windows laptop via HDMI.
Troubleshooting:
My initial thought was that the t-conn board must be losing voltage and crapping out, but testing with a multimeter I'm getting a rock solid 5vdc on all the pins I should be. Thinking it still might be the T-Conn board I ordered a replacement from ShopJimmy and got that installed today, but still no video. Just for giggles I decided to test out all the voltages across all of the connectors that were labelled, and they all come out just fine. Lastly I figured the video processing cpu must have an issue (i'd seen similar things come up with the Samsung 305T) so I gave that and the ram chip next to it a reflow. Still no dice. I found a few posts on here about a Sony Bravia TV using the same panel that had an issue with the ribbon tabs coming loose, so I dismantled the LCD panel and tried putting some pressure on the tabs while I was feeding it video from a PS3. Still no dice.
I'm all out of ideas. anyone got anything more I could try?
Anyhoo here's the skinny:
Symptoms:
Screen powers on, momentarily shows the Sceptre logo, then fades out to black in about 500ms. Audio continues to function normally, and the TV is detected properly on a Windows laptop via HDMI.
Troubleshooting:
My initial thought was that the t-conn board must be losing voltage and crapping out, but testing with a multimeter I'm getting a rock solid 5vdc on all the pins I should be. Thinking it still might be the T-Conn board I ordered a replacement from ShopJimmy and got that installed today, but still no video. Just for giggles I decided to test out all the voltages across all of the connectors that were labelled, and they all come out just fine. Lastly I figured the video processing cpu must have an issue (i'd seen similar things come up with the Samsung 305T) so I gave that and the ram chip next to it a reflow. Still no dice. I found a few posts on here about a Sony Bravia TV using the same panel that had an issue with the ribbon tabs coming loose, so I dismantled the LCD panel and tried putting some pressure on the tabs while I was feeding it video from a PS3. Still no dice.
I'm all out of ideas. anyone got anything more I could try?
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