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I use my DSO very little, it might have 10 hours on it. A few months ago, I turned it on and it booted up. Several minutes later, the screen went dead and unit was unresponsive. After many failed attempts, I stopped trying. I tried again several months later and I got it to boot up and then after a few minutes it is unresponsive again. The following lights/buttons are on and unresponsive: Green light to the left of V0, CH1 Menu, Math Menu, CH2 Menu, Auto Set and Run/Stop. Screen is totally blank and fan is running. I have checked all the voltages out of the power supply and the only voltage that seems out of whack is the +9 volt as it is at 6.53 volts. This feeds a 5V regulator and the output is 5.0 volts.
Thanks
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