I have a Samsung S24B300 that has an issue in which the screen is garbled when first turned on. After times varying from 5-20 seconds the screen resolves itself.
The main circuit board is labeled sa350 and is the version with VGA and HDMI connectors. Anytime the screen is garbled, there is a high pitched noise coming from a cluster of components but when the issue resolves itself, the noise disappears.
I tested the powersupply, it is rated for 14v and it varies from 15 - 14v depending on the board and it also has a center pain making it non standard. However, the powersupply was swapped, and it didn't change anything.
I have powered the unit up with the tcon board unplugged and it, waited 5 minutes and then plugged it in and the issue was resolved, so I think it is isolated to the main board, but I am not 100% sure.
I have tested the main board voltages and they seem fine when the display is garbled, so I don't think that is the issue.
Please let me know if you have any ideas.
And the service manual: http://www.go-gddq.com/upload/2011-12/11122610175323.pdf
The main circuit board is labeled sa350 and is the version with VGA and HDMI connectors. Anytime the screen is garbled, there is a high pitched noise coming from a cluster of components but when the issue resolves itself, the noise disappears.
I tested the powersupply, it is rated for 14v and it varies from 15 - 14v depending on the board and it also has a center pain making it non standard. However, the powersupply was swapped, and it didn't change anything.
I have powered the unit up with the tcon board unplugged and it, waited 5 minutes and then plugged it in and the issue was resolved, so I think it is isolated to the main board, but I am not 100% sure.
I have tested the main board voltages and they seem fine when the display is garbled, so I don't think that is the issue.
Please let me know if you have any ideas.
And the service manual: http://www.go-gddq.com/upload/2011-12/11122610175323.pdf