The v outputs on the SMPS to the MAIN are supposed to be 13v according to the writing on the SMPS board. They are all reading 12.68v when tested. Is this too low?
The symptom is that the backlights come on but there is no picture. The LED's on the TCON do not come on (sometimes TCON LED2 will flash briefly on startup). Voltage at both sides of TCON fuse is also 12.68v.
The power LED flashes five times after power on. After the second flash, the backlights flicker. Then after the fifth power LED flash, the backlights flicker again. Then the power LED stays off, with the backlights still on.
Sometimes when first powered on the RF picture and sound will come on but as soon as the menu button is pressed the picture will 'melt' away.
No puffy caps or burned components on any board (that I can find).
Please help as I live on one of the most remote inhabited islands on Earth. No airport and a supply boat only every six months. So if I am going to get a new board for the owner of this unit I need to know it is the right one :-(
The symptom is that the backlights come on but there is no picture. The LED's on the TCON do not come on (sometimes TCON LED2 will flash briefly on startup). Voltage at both sides of TCON fuse is also 12.68v.
The power LED flashes five times after power on. After the second flash, the backlights flicker. Then after the fifth power LED flash, the backlights flicker again. Then the power LED stays off, with the backlights still on.
Sometimes when first powered on the RF picture and sound will come on but as soon as the menu button is pressed the picture will 'melt' away.
No puffy caps or burned components on any board (that I can find).
Please help as I live on one of the most remote inhabited islands on Earth. No airport and a supply boat only every six months. So if I am going to get a new board for the owner of this unit I need to know it is the right one :-(
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