Dear forum members,
I came here for a little help repairing my projector.
Symptoms: when I turn it on, it starts normally, then the attached picture greets me (sorry, didn't have white background). If I press no buttons, the machine can stay in this state as long as needed.
But, as soon as I press the source button, it searches trough the inputs, and switches on the input that is connected. It displays the picture nice and flawless, but from here, none of the buttons work. And from this point, in usually 3 minutes (+/- 10 seconds) it switches off, and all the 3 leds blink together in red, with 1 blink/second. The fans are spinning at max speed, for about 2 minutes, then the unit switches off. Now it can be switched on again, but does the same again.
From the picture seen in the attachment and the fact, that it can stay on in that state indicates me that it is a software failure. First I tried to read out the EEprom, write it into an other chip - it didn't help. There are 2 NAND flashes on the PCB, if their program is corrupted, I don't know where could I get that binary. Also, the contents of the EEprom can be corrupted, but in that case I am also in trouble finding a working copy of that.
I came here for a little help repairing my projector.
Symptoms: when I turn it on, it starts normally, then the attached picture greets me (sorry, didn't have white background). If I press no buttons, the machine can stay in this state as long as needed.
But, as soon as I press the source button, it searches trough the inputs, and switches on the input that is connected. It displays the picture nice and flawless, but from here, none of the buttons work. And from this point, in usually 3 minutes (+/- 10 seconds) it switches off, and all the 3 leds blink together in red, with 1 blink/second. The fans are spinning at max speed, for about 2 minutes, then the unit switches off. Now it can be switched on again, but does the same again.
From the picture seen in the attachment and the fact, that it can stay on in that state indicates me that it is a software failure. First I tried to read out the EEprom, write it into an other chip - it didn't help. There are 2 NAND flashes on the PCB, if their program is corrupted, I don't know where could I get that binary. Also, the contents of the EEprom can be corrupted, but in that case I am also in trouble finding a working copy of that.
Attached Files
